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Volume 30, Issue 1
Displaying 1-25 of 25 articles from this issue
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Kunio Shiobara, Yoshinobu Sawada, Susumu Morioka1966 Volume 30 Issue 1 Pages 1-6
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSAnodic polarization curves of iron and 18-8 stainless steel were measured by differing experimental techniques in a dilute sulphuric acid solution and in a neutral sulphate solution. Polarization was performed with a semi-conductor type potentiostat. The results obtained are as follows:
(1) The anodic current in the passive region of iron is influenced by the oxidation current of ferrous ion produced by the anodic dissolution of iron while passing through the active region in which the electrolyte maintains the acidity of pH values less than 4. The measurement should be conducted rapidly to avoid excessive corrosion.
(2) The anodic current in the passive region of iron is significantly influenced by the oxidation current of hydroxyl ions when the pH value of the electrolyte becomes greater than 6 in the course of passing through the active region.
(3) The anodic polarization curve of 18-8 stainless steel shifts to a lower current density region as the potential traverse rate decrease, indicating time-dependency of anodic current. Measurements should be conducted as slowly as possible.
(4) The potential-step method and the potential-sweep method at an identical traverse rate leads to the same result for both iron and 18-8 stainless steel respectively.
(5) The anodic polarization in the active direction conducted to avoid the disturbance in current in the passive region due to the anodic corrossion in the active region tend to obscure the other feature of polarization curve and poor reproducibility.View full abstractDownload PDF (1261K) -
Tsutomu Nozaki, Mitsuo Shimoji, Kichizo Niwa1966 Volume 30 Issue 1 Pages 7-10
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSBy means of an electromotive force method the thermodynamic properties of liquid Ag-In system have been determined. Electrode potentials of the concentration cells of the following type were measured in the temperature range of 1000°∼1200°K: In (liquid)/InI in NaI + KI/In-Ag (liquid).
The partial and integral values of excess enthalpy, excess free energy and excess entropy of this system were calculated.
The experimental results are discussed in terms of solution theories.View full abstractDownload PDF (1042K) -
Sennosuke Takahashi, Masao Adachi1966 Volume 30 Issue 1 Pages 10-15
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSChanges in the hardness and structure of dispersion strengthened Ni-Al2O3 alloys (1∼5 wt%) were observed by vacuum annealing at 1200°C for 5 hr. Among the alloys the Ni-1% Al2O3 alloy showed the disappearance of the fiber texture and a slight change in hardness by further annealing, so that it was selected as a material suitable for a study of the steady-state creep mechanism. Creep tests were carried out on the Ni-1% Al2O3 alloy at 650°∼800°C under the stress of 2∼6 kg/mm2.
The results of the creep tests were compared with the theoretical values obtained by G. S. Ansell et al. for the two parameters, n and Q, in the equation \dotε=Aσnexp(−Q⁄kT), where \dotε is the steady-state creep rate and Q is the activation energy.
The values obtained by the authors are n=4.3∼6.5 and Q=34.0∼71.7 kcal/mol which are approximate to the theoretical ones in the assumption that dislocation climb is the rate determining process. Moreover, it has been established that the activation energy for steady-state creep decreases with increasing of the applied stress.
The values of the shear modulus μ, calculated from the theoretical formula \dotε=\dfrac2πλ2hμkTσ4D0exp(−Q⁄kT) by use of the experimental values, \dotε and Q, are in the range of 1012 dyne/cm2 which is comparable with those of nickel.View full abstractDownload PDF (1499K) -
Zenji Nishiyama, Muneo Oka, Hiroshi Nakagawa1966 Volume 30 Issue 1 Pages 16-21
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe structure of a Ti-3 wt%Fe alloy quenched from the β-phase has been examined mainly by means of transmission electron microscopy. The quenched specimen is very brittle and its hardness is 500∼600 VHN. From the results of optical microscopy and X-ray diffraction, the structure is found to be very fine and to have a large number of lattice defects. Electron microscopy reveals that the structure consists of acicular grains about 1∼2 μ in length and about 1/5 μ in width. Therefore, electron diffraction analyses are difficult in most cases. However, from the results of the solvable diffraction patterns it is confirmed that there are two types of martensite: one is hexagonal close-packed and the other is face-centered cubic. The latter is a newly found phase which cannot be directly deduced from the equilibrium phase diagram in the Ti-Fe system. The retained β-phase is also present in the quenched alloy.View full abstractDownload PDF (1780K) -
Tetsuo Kato1966 Volume 30 Issue 1 Pages 21-25
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe compositions of Alnico magnets for the hysteresis motor were established. The composition of about 9 percent aluminum and 14 to 18 percent nickel makes it possible to control the coercive force in the range from 70 to 220 Oersted, when small quantities of cobalt and copper are added. The changes of magnetic properties by the various conditions of heat treatment were also confirmed. Nine kinds of ring specimens having different values of coercive force ranging from 80 to 210 Oersted were chosen to measure each throng of hysteresis loops and the relations between the coercive force and some hysteresis properties were studied. An increase of the coercive force above 150 Oersted causes a slow decrease of the maximum value of energy factor, which shows little change and remains at a high value above 60 persent for the coercive force between 80 and 150 Oersted. There is a nearly linear relationship between the coercive force and the magnetizing force which gives the maximum value of energy factor.
A high value of the maximum energy factor is obtained in a hysteresis loop with a high degree of angularity, while an angular hysteresis loop is attained in such a condition that a material inherently high in coercivity has undergone a proper treatment to have a reduced value of coercive force. In a hysteresis motor, it has been confirmed that an increase of the coercive force causes a decrease of the starting torque and an increase of the pull-out torque.View full abstractDownload PDF (585K) -
Shin-ichiro Muroi, Mayumi Someno1966 Volume 30 Issue 1 Pages 26-31
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSInvestigations were made on the nitriding process of titanium and its alloys containing 3%Al, 3%Mn, 7%Mn, 3%Fe and 7%Fe, respectively. Nitrided specimens were examined by weight gain, X-ray diffraction, electron beam X-ray microanalysis, microhardness and metallographic techniques. TiN was detected on titanium and its alloys at 1200°C, while ε-TiN and TiN were observed at 1000°C. A case which consisted of nitride film and α-layer was produced on the rim of the specimens. Elongated α grains were observed below the case on the Ti-3%Al alloy nitrided at 1000°C. The hardness gradient, consequently the nitrogen gradient, was remarkable in the α-phase layer, but not detected in the elongated α grains. In nitrided specimens of Ti-Mn and Ti-Fe alloys, the enrichment of manganese and iron was observed in the β-phase next to the α⁄β interface, but such an enrichment of alminum in the Ti-3%Al alloy was observed in the vicinity of the nitride film/α-phase interface.View full abstractDownload PDF (2642K) -
Masataka Sugiyama, Hisashi Suzuki, Hitoshi Kitano, Testuo Sato1966 Volume 30 Issue 1 Pages 32-37
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSFor the purpose of developing high strength and high conductivity Cu-Zr alloys, high zirconium Cu base binary alloys containing 0.3 to 3.0%Zr were studied from the viewpoint of dispersion and age hardenability. Two kinds of chill cast and water-cooled chill cast ingots (80 mmφ×170 mm) were prepared. They were at first hot-rolled at about 850°C, subsequently solution-annealed at 880° to 890°C for 40 min, and finally 83% cold-reduced to plates 0.5 mm in thickness. Properties of these two series of specimens were examined as a function of aging conditions.
The results obtained are as follows: (1) Maximum values of hardness and tensile strength obtainable after aging at 400°C for 1 hr increase remarkably with increasing of the Zr content, but the softening temperature and the electrical conductivity decrease slightly. (2) Compared with chill casting, water-cooled chill casting can reduce the Zr content in the alloys to attain definite properties, and also improves their heat resistivity. Accordingly, the water-cooled chill casting is essential in making high zirconium copper alloys. For example, properties of the alloys containing 1.14 and 2.24%Zr and aged at 400°C are: 170 and 180 Hv in hardness, 55 and 60 kg/mm2 in tensile strength, 80 and 75% IACS in electrical conductivity. (3) The reason why this method is so effective may be explained by the fact that the refinement of the casting structure takes place during casting, namely, the dispersion of Cu3Zr is improved with the reduced grain size. The dispersed particles are almost stable at a temperature below 900°C.View full abstractDownload PDF (1226K) -
Tetsuya Takaai1966 Volume 30 Issue 1 Pages 38-42
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe effects of alloying elements on the ductility of electron beam melted molybdenum have been studied mainly by the fractographic method, Charpy impact test and electron diffraction technique. From the fractographs of brittle fractured ingots, it was known that the structure of the pure molybdenum ingot consisted of well collimated columnar crystal grains, and the fracture surfaces were principally columnar grain boundaries. Contrary to the above, the structures to which small amounts of carbon, titanium and zirconium were added showed the disappearance of the columnar grains, and the fracture surfaces were almost cleavage planes.
The ductile-to-brittle transition temperatures (Tc) by the Charpy impact test were found between the liquid nitrogen temperature and 300°C. But no remarkable changes of Tc were observed in annealing in the temperature range of 1150°∼1400°C excepting titanium-added molybdenum and pure molybdenum which was worked to the test piece sizes by repeating the hot forging and heating. However, the transition temperature (Tc) were affected remarkably by grain sizes and dTc⁄dln(d−1⁄2)=−1⁄β relationships (d: grain size, β: constant) were also found for molybdenum. The calculated values of β were 1.2×10−3/°C for pure molybdenum and carbon-added molybdenum, and 2.1×10−3/°C for titanium-added molybdenum. However, for equal grain sizes, Tc of the former was about 100°∼200°C higher than the latter.
The electron diffraction results showed that the grain boundary inclusions were neither titanium oxide and carbide nor molybdenum oxide and carbide. From the above results, the present author speculated that the grain boundary inclusions of titanium-added molybdenum consisted of a complex oxide of titanium and molybdenum, and the grain boundary brittleness due to the presence of a simple oxide or carbide of molybdenum was diminished.View full abstractDownload PDF (1282K) -
Yuki Shirakawa, Takeshi Abe1966 Volume 30 Issue 1 Pages 42-46
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSIt was found previously that the magnetic properties of Al-Ni-Co type N.K.S. permanent magnets showed anomalies when heated at about 875°C and then cooled in magnetic field (the low temperature treatment), and that the maximum energy product of these magnets subjected to this treatment is equivalent to or better than that obtained by the high temperature (about 1300°C) treatment. The variation of optimum temperatures TL for the low temperature treatment was already investigated in a series of the magnets containing various amounts of Al, Ni, Co and Cu, respectively. In this study, the TL was measured in a series of the magnets containing Ti up to 10%. The experiments show that the TL decreases as the Ti content increases, and the gradient of TL is 13.2°C per unit percent of Ti. At the same time the Curie points A2 of these magnets were measured. The A2 decreases as the Ti content increases. A2 coincids with TL in the standard composition of 1%Ti, and A2 is lower than TL for a lower content of Ti and higher for a higher content. The effect of the low temperature treatment decreases, as the Ti content increases, because the difference between A2 and TL, and precipitation of the γ phase increases gradually.View full abstractDownload PDF (1147K) -
Takeshi Abe1966 Volume 30 Issue 1 Pages 46-50
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSIt was found previously that the magnetic properties of Al-Ni-Co type N.K.S. permanent magnets showed anomalies when heated at about 876°C and then cooled in the magnetic field (the low temperature treatment) and that the maximum energy product of these magnets subjected to this treatment is equivalent to or better than that obtained by the high temperature (about 1250°C) treatment. The variation of the optimum temperatures TL for the low temperature treatment was already investigated in a series of the magnets containing various contents of Al, Ni, Co, Cu and Ti, respectively. In this paper, the TL was measured in a series of the magnets containing Nb and Zr up to 3.5% and 2.5%. The experiments show that TL increases as the Nb content increases and decreases as the Zr content increases. At the same time the Curie points A2 of these magnets were measured. A2 decreases gradually as the Nb or Zr content increases. As the content of Nb or Zr increases, the effect of the low temperature treatment decreases, because of the difference between A2 and TL increases.View full abstractDownload PDF (745K) -
Koreaki Suzuki, Masaru Fukumoto, Yoshitaka Nakagawa1966 Volume 30 Issue 1 Pages 50-56
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe C-O equilibrium in carbon-saturated molten iron has been re-examined by the new sampling method for oxygen analysis.
The results obtained are as follows:
(1) Equation indicating the solubility of carbon in molten iron:
(This article is not displayable. Please see full text pdf.)
(2) Equations indicating the relations between carbon and oxygen in carbon-satulated molten iron:
(This article is not displayable. Please see full text pdf.)
(3) Equation indicating the activity coefficient of carbon or oxygen in carbon-saturated molten iron:
(This article is not displayable. Please see full text pdf.)View full abstractDownload PDF (1348K) -
Hiroyasu Mitani, Masami Onishi, Tokuzo Shikano1966 Volume 30 Issue 1 Pages 56-61
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe chemical diffusion coefficient in a α solid solution of the Fe-Si system obtained by Batz et al.(1) has been regarded as the most reliable value up to the present time. However, the above experiment was carried out only in a narrow range of silicon concentration from 2.3 wt% (4.5 at%) to 3.7 wt% (7.1 at%). To obtain a more reliable value of the diffusion coefficient up to a higher silicon concentration within the α phase, the present work was carried out.
The former experiment was carried out using the welded diffusion couples, while the latter experiment using the siliconized couple of α Fe and α Fe3Si, where the 2.9 wt% (5.6 at%) Si containing low silicon steel was treated by the poreless siliconizing method as shown in our previous works(3)∼(9).
The siliconized couples were heated at temperatures from 1130° to 1220°C, and the diffusion coefficients were calculated by the Matano method in the range of silicon concentration from 3.6 wt% (7.0 at%) to 11.7 wt% (21 at%), with correction of the diffusion time by da Silva and Mehl’s equation(15). The results obtained are as follows.
(1) The minimum value of the diffusion coefficients at a given temperature is found at about 10 atomic percent silicon.
(2) Both the activation energy and the frequency factor show the maximum values at 15 atomic percent silicon.
(3) The diffusion coefficient at 7 atomic percent silicon is in good agreement with the result by Batz.View full abstractDownload PDF (1149K) -
Takao Kimura, Yasushi Watanabe1966 Volume 30 Issue 1 Pages 62-67
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe dilute Cu-Be alloys containing Be up to 0.252 wt% were internally oxidized mainly in the form of a cylinder and partly in the form of a plate to investigate the mechanical properties with respetc to the internal oxidation velocity and dispersed particle size. The results obtained were as follows:
(1) In the cylindrical specimen the internal oxidation velocity is maximum at the external surface and decreases with increasing depth until it increases near the center of the specimen.
(2) As the growth of the dispersed particles is controlled by the internal oxidation velocity, the size of the particles is the smallest at the external surface and increases with increasing depth while it decreases near the center of the cylindrical specimen. Therefore the distribution curve of the internal oxidation velocity is in accord with those of the yield strength and the hardness.
(3) The yield behavior of the internally oxidized Cu-Be alloys is well explained by the Orowan theory.
(4) The Cu-0.047 wt%Be alloy plate 0.4 mm in thickness, internally oxidized at 1000°C and 50%, cold rolled does not recrystallize even by annealing at 1000°C for 6 hrs.View full abstractDownload PDF (1077K) -
Keizo Nishida, Michihiro Tagami1966 Volume 30 Issue 1 Pages 68-72
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe Fe-Al-2%C alloys with up to 20%Al were heated up to 900°C from the chilled state by cyclic heating and isothermal heating, and changes in the structures, hardness, graphitization and growth, were examined. The results obtained were as follows:
(1) The alloys with 1∼4%Al showed a remarkable softening by the cyclic heating due to the graphitization. With more than 10%Al, however, the hardness remained unchanged (about 450∼500 Hv).
(2) On the isothermal heating (for 3.5 hrs), the alloy with 4%Al showed the maximum growth at about 650°C, and at higher temperature it rather decreased. Other alloys showed a similar behavior, but with more than 10%Al no growth was shown.
(3) From the change in dilatation due to the eutectoid-type reaction and its reaction temperature on the cyclic heating, it appears that the limiting composition showing such a reaction is up to about 7%Al and that the reaction temperature increases up to about 815°C with 7%Al.
(4) As compared the structures of these alloys with the existing phase diagram, there are no great differences except the rise of the eutectoid-type reaction temperature.View full abstractDownload PDF (834K) -
Keizo Nishida, Michihiro Tagami1966 Volume 30 Issue 1 Pages 73-78
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe chill-cast Fe-Al-3%C alloys (with up to 18%Al) were examined by a method similar to that described in the previous report to compare the difference of changes in the structure and other properties, and especially to further examine the ambiguous parts in the existing phase diagram because of these alloys having a carbon composition akin to the so-called K-phase than in the previous report. The results were as follows:
(1) The as-cast alloys had a relatively high hardness (530∼770 Hv), but after heating, 1∼4%Al alloys softened in the same way as in the case of 2%C alloys by the reason described in the previous report. The ferrite in each alloy increased hardness with the Al content (up to 350 Hv), but the K-phase remained unchanged.
(2) Expansion and Contraction were observed in some alloys during holding at 900°C, probably due to the plastic contraction of some voids caused by the dissolution of graphite in the matrix.
(3) The so-called eutectoid-type reaction temperature was found to rise with the Al the content and was estimated to be about 850°C with the composition of about 8%Al.
(4) As the present diagram was uncertain owing to an ambiguous K-phase, a section diagram for 3%C was proposed based on the results of the present investigation assuming the composition of K-phase to be Fe3Al C0.66.View full abstractDownload PDF (1376K) -
\={O}hiko Kammori, Isamu Taguchi, Takeo Kayama1966 Volume 30 Issue 1 Pages 78-81
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThe molybdenum blue method has been successfully established for the photometric determination of micro-amounts of phosphorus (the amount of sample: 0.1 g, 0.0002%∼0.01%) in pure iron. This method is highly sensitive and is scarcely affected by the co-existing elements. Phosphorus can be determined in the presence of iron by the method. The recommended procedure is as follows:
One tenth g of sample is decomposed with nitric acid and hydrogen peroxide. Five mL of 10 N nitric acid and 5 mL of 10% ammonium molybdate solution are added and then the whole diluted to the total volume of about 25 mL. The solution is stirred for about 2 minutes with 10 mL of the organic solvent (25 V/V% of n-butylalcohol in chloroform). The aqueous layer is stirred for about 1 minute with 5 mL of the solvent. The solvents are mixed and stirred with 10 mL of 1% stannous chloride solution for about 30 seconds. Phosphorus is determined from the absorbance around 700 mμ.
An analysis was carried out in about 40 minutes within an error of 0.0001%. One hundred μg of 21 elements usually contained in pure iron showed almost no interference when 5 μg of phosphorus was determined.View full abstractDownload PDF (514K) -
Shizuya Maekawa, Yoshio Yoneyama, Kiyotoshi Kat\={o}1966 Volume 30 Issue 1 Pages 82-86
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSAn accurate iodometric method for determining of the tin contained in alloy steels has been investigated. When the sample is decomposed rapidly by warming with HCl or H2SO4 instead of HNO3, a partial volatilization of tin occurrs. Then, the loss of tin is greater by using H2SO4 than HCl, and this tendency also increases with increase of the dissolving rate. Such samples as pig iron and low chrome steel are difficult to dissolve because of the passivation formed during the decomposition, if only HNO3 is added. In such cases, it is advisable to decompose with a mixture of H2SO4 and HNO3. For the high chrome steel undecomposed with HNO3, the use of dilute aqua regia shortens the time for decomposition and reduces the loss of tin as compared with the HCl method(2). In addition, some reduction techniques from Sn4+ to Sn2+ to be employed prior to the iodometry has been studied and confirmed that the optimum reducing agent is sodium hydrogen hypophosphite with HgCl2 as catalyser(9)(10).View full abstractDownload PDF (881K) -
Shizuya Maekawa, Yoshio Yoneyama, Kiyotoshi Kat\={o}1966 Volume 30 Issue 1 Pages 86-90
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSApplication of the manganese dioxide co-precipitation method to the separation of tin in alloy steels has been studied. When the acid concentration in the HNO3 solution is less than 1 N, more than 98% of tin can be collected by a single precipitation. In the solution mixed with H2SO4 and HNO3, the amount of adsorbing tin gradually decreased with the increase of the concentration of free H2SO4, and at the acid concentration exceeding 0.6 N, a negative error will be beyond the permissible limits even if the tin which recollected from the filtrate is added. This may be attributed to the difference in adsorbability due to the properties of manganese dioxide precipitates which depend on the kinds of acid and concentrations. Among coexisting ions, Mo6+ and V5+ are easily adsorbed to the precipitates, and if they coexist in large quantities, the adsorption of Sn4+ is prevented. In conclusion, this manganese dioxide method is not very advantageous with respect to the time requirment and accuracy, when it is applied to the high chrome alloy steels which are difficult to dissolve with nitric acid only.View full abstractDownload PDF (964K) -
Hidehiro Gotô, Shigero Ikeda, Akira Saito1966 Volume 30 Issue 1 Pages 91-94
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSIn the emission spectrometric determination of carbon in steel, CI 1930.9 Å line has been utilized as an analytical line. But, this line is interfered by the aluminium line, and gives rise to a high analytical error when the aluminium content is above 0.2%.
Spectrochemical characters of the aluminium spectral line was studied to establish a correcting equation for the spectrometric determination of carbon. The results obtained were as follows:
(1) The wavelength of aluminium line was 1931.023 Å and deviated 0.084 Å from the carbon line.
(2) The aluminium spectral line was an ionic line.
(3) The arc-like excitation condition was favourable in its sensitivity and reproducibility for the determination of carbon.
(4) Correcting equation Cc=\dfrac1142(It−20.0)−0.083Ca (Cc: carbon content, Ca: aluminium content, It: chart reading) was obtained at the excitation of a low-voltage spark (40 μF, 25 Ω, 50 μH, 860 V).
(5) Using this equation, 0.04∼0.15% of carbon in the steel samples could be determined in the presence of 0.02∼1.3% of aluminium, with variation coefficents of 3.5∼5.7%.View full abstractDownload PDF (439K) -
Kyoji Nishizaki, Tetsuo Matsumura, Hisayoshi Miwa1966 Volume 30 Issue 1 Pages 94-98
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSThis paper deals with the spectrographic method for the simultaneous determination of trace elements (Al, Co, Mg, Mn, Mo, Pb, Ti and V) in zircaloy-2.
Satisfactory results were obtained by using “Oxide-D.C. Arc Technique” which has two advantages from a viewpoint of spectrochemical analysis, that is, the simple preparation of standard samples and the high sensitivity.
A mixture of the oxide sample and graphite powder containing Y2O3 as an internal standard was arced for 15 sec 7 amp. d.c. arc, with sufficient sensitivity and high precision. The density of spectra obtained was measured by an automatic recording microphotometer, and then converted into the relative intensity by means of special calculator “Respectra”.
The coefficient of variation was from 5 to 20% in the analytical concentration range from 5 to 200 ppm.View full abstractDownload PDF (1315K) -
Takeo Sata1966 Volume 30 Issue 1 Pages 99-100
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSDownload PDF (229K) -
1966 Volume 30 Issue 1 Pages 101a
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSPlease see pdf. Wrong:Current Density (mA/cm2 Right:Current Density (μA/cm2View full abstractDownload PDF (154K) -
1966 Volume 30 Issue 1 Pages 101c
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSPlease see pdf. Wrong:elongation by a……, tensile-testing-machine., on the crack propagation., Corrosion, 19 (1963), 102t., [Please see pdf], [in Japanese], Shematic……tests proccedure, [in Japanese], [in Japanese], afte 350°C 1 hr, [in Japanese], [in Japanese], Trans-and, [Please see pdf], annealed various, [in Japanese], 70:30 brass, and containing, [in Japanese], [in Japanese], [in Japanese], [in Japanese], [Please see pdf] Right:elongation using a……, tensile testing machine., on crack propagation., Corrosion, 19 (1963), 102., [Please see pdf], [in Japanese], Shematic……test procedure, [in Japanese], [in Japanese], after 350°C 1 hr, [in Japanese], [in Japanese], Trans and, [Please see pdf], annealed at various, [in Japanese], 70:30 brass with and without, [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japanese]View full abstractDownload PDF (154K) -
1966 Volume 30 Issue 1 Pages 101b
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSPlease see pdf. Wrong:1 10 20 30, 0 2 3 4, Ur=1/2Usr0, [Please see pdf], [in Japanese] Right:0 10 20 30, 1 2 3 4, Ur=1/2Usr0, [in Japanese], [in Japanese]View full abstractDownload PDF (154K) -
1966 Volume 30 Issue 1 Pages 101d
Published: 1966
Released on J-STAGE: April 04, 2008
JOURNAL FREE ACCESSPlease see pdf. Wrong:[Please see pdf] Right:[in Japanese]View full abstractDownload PDF (154K)
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