巻号一覧
55 巻, 4 号
選択された号の論文の21件中1～21を表示しています
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佐藤 茂夫, 漆原 富士夫, 鈴木 朝夫1991 年 55 巻 4 号 p. 353-359
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーDiscontinuous precipitation of Fe-Ni-Mn ternary alloys containing 40 to 90 at%Fe were investigated by means of optical and electron microscopy, X-ray diffraction, dilatation, electrical resistivity and hardness measurements. During aging at 673 K, in the alloys containing 50 to 90%Fe, precipitates are hardly observed in the matrix and the primary cell with lamellar structure grows discontinuously from the grain boundary. However, with decreasing Fe content, the primary cell is changed from lamellar-type to the modulated-type. The primary and the secondary cells with lamellar structure precipitating in the temperature range i.e., 673∼748 K, consist of a bcc phase and an fct phase. The bcc phase is directly formed at the aging temperature. At the temperatures above 773 K, the lamellar cell consists of an fcc phase and an fct phase.抄録全体を表示PDF形式でダウンロード (2599K) -
菅野 幹宏, 歐 炳隆, 荒木 一郎1991 年 55 巻 4 号 p. 360-365
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe quench sensitivity of an 8090 (Al-Li-Cu-Mg-Zr) alloy was evaluated by adopting heat-treatment including step-quenching followed by aging. It was confirmed that the quench sensitivity of the 8090 alloy was quite low compared with that of the other age-hardenable aluminum alloys. In other words, the age-hardenability of this alloy was hardly lowered by slow cooling from solution-treatment temperatures. This was ascribed to the fact that almost all dispersoids of an Al3(Zr, Li) phase were still coherent after solution-treatment, since coherent dispersoids never act as the heterogeneous nucleation site for incoherent stable phases during slow cooling. The dispersoids maintained their coherency, because no recrystallization occurred in the cold-worked specimens. This was probably due to the fact that the volume fraction of the dispersoid was high enough on account of Li-bearing. In addition, most of the dispersoids were found to remain coherent even in a specially recrystallized region because of the occurrence of dissolution and reprecipitation of the dispersoids. The reason was discussed why the dissolution was possible only in this alloy and not in Al-Zn-Mg-Cu-Zr alloys, when high angle boundaries were in contact with the Zr-bearing dispersoids.抄録全体を表示PDF形式でダウンロード (2666K) -
斎藤 秀雄, 宮沢 薫一, 石田 洋一1991 年 55 巻 4 号 p. 366-375
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーBehavior of hydrogen in an austenitic stainless steel SUS316L was investigated by tritium transmission electron microscopic autoradiography.
Distribution of silver grains in the autoradiograph obtained by the β-rays emitted from tritium in the specimen indicated that hydrogen was trapped by defects and precipitates in grain boundaries or at triple lines where three boundaries met.抄録全体を表示PDF形式でダウンロード (2803K) -
冨村 宏紀, 永守 浩樹, 高木 節雄, 徳永 洋一1991 年 55 巻 4 号 p. 376-382
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーDeformation behavior in metastable austenitic stainless steel having an ultra fine grain structure has been investigated using a 12.5%Cr-9.5%Ni-2%Mo-0.1%N steel by means of a tensile test with particular emphasis on the behavior of deformation induced martensite (α′). The ultra fine grain austenite (γ) structure was achieved by reversion from α′ to γ. The grain size was controlled in the range between 0.2 and 40 μm by selecting annealing temperatures from 950 to 1400 K.
Nominal stress-strain curves of the ultra fine grain (≤0.5 μm) specimens, which were obtained by annealing at temperatures from 973 to 1023 K for 180 s, exhibit the upper and lower yield points followed by a constant stress level between them (yield point phenomena). At the plateau stage neck is locally introduced and propagated in the gage position by heterogeneous deformation, accompanied by α′ formation.
The occurrence of the yield point phenomenon and the size of the neck depend on two true stresses, i.e. the work hardening stress especially by the formation of α′ (σR) and the concentrated stress by the reduction of area (σL) in the necked area. The heterogeneous deformation in the ultra fine grain specimens can be explained by the plastic instability, that is, σL is higher than σR, which arises from the fact that α′ formation is largely suppressed by the grain refinement. When σR is higher than σL as in the case of coarser grain specimens, local necking is arrested and the deformation is propagated to another position, leading to uniform deformation.抄録全体を表示PDF形式でダウンロード (1243K) -
山崎 徹, 森下 健一, 荻野 喜清1991 年 55 巻 4 号 p. 383-389
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe reversible behavior of annealing embrittlement of an amorphous Fe77B13Si10 alloy has been examined by measuring the ductile-brittle trasition temperature (DBTT) and the volume change of the specimen during annealing. By annealing the alloy at temperatures between 593 K and 653 K, the DBTT rapidly increases accompanied by a increase in the Curie temperature and a decrease in the volume of the specimen. This increase of DBTT is attributed to a combined effect of a development of the chemical short range order and a decrease in free volume. Upon a subsequent short time annealing at about 700 K, however, the DBTT rapidly drops. By cyclic annealing between the temperatures for the embrittlement and the restoration, the DBTT reversibly changes. The very rapid reactions for the embrittlement and the restoration suggest that the reversible change in DBTT is due to a reversible formation and dissociation of the chemical short range order.抄録全体を表示PDF形式でダウンロード (947K) -
連川 貞弘, 中島 雅文, 村田 顕彰, 栗下 裕明, 吉永 日出男1991 年 55 巻 4 号 p. 390-397
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーIn order to clarify the mechanism of solid solution hardening in titanium carbide at high-temperatures, the three kinds of solid solutions, whose alloying elements of Mo, Nb and Zr belong to the same period in the periodic table and neighboring groups, VIa, Va and IVa, respectively, have been deformed by compression at temperatures from 980 to 2270 K and at strain rates from 1×10−4 to 1×10−2 s−1. Further, X-ray photoelectron spectroscopic (XPS) measurements have been curried out.
It is found that the solid solution hardening is smaller in TiC-Nb than that in TiC-Mo, though the size misfit parameter, εb, in TiC-Nb is larger than that in TiC-Mo, and TiC-Zr shows an extremely high strength, being 15 to 20 times higher than pure TiC0.90 having almost the same carbon/metal atom ratio. The XPS measurement suggests that the dislocation-solute atom interaction resulting from a change in electronic structure should be effective for solution hardening.抄録全体を表示PDF形式でダウンロード (1162K) -
林 實黙, 木村 一弥, 中村 泰1991 年 55 巻 4 号 p. 398-404
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーStandard Gibbs free energy changes for decompositions of BaFe2W(BaO·2FeO·8Fe2O3), BaFeX (BaO·FeO·7Fe2O3), SrFe2W (SrO·2FeO·8Fe2O3), and SrFeX (SrO·FeO·7Fe2O3) compounds at lower temperatures were determined by the E. M. F. measurements of galvanic cells with solid electrolytes (CSZ and YSZ). Cell structures studied are as follows: [Cell I]; Pt, Ni-NiO/ZrO2(+Y2O3)/O2 in Air, Pt [Cell II]; Pt, Fe3O4-Fe2O3/ZrO2(+Y2O3)/O2 in Air, pt [Cell III]; Pt, BaFe2W-BaM-Fe2O3/ZrO2 (+Y2O3)/O2 in Air, pt [Cell IV]; Pt, BaFe2W-BaM-Fe2O3/ZrO2(+Y2O3)/O2 (pure, PO2=101325 Pa), Pt [Cell V]; Pt, BaFeX-BaFe2W-BaM/ZrO2(+Y2O3)/O2 (pure, PO2=101325 Pa), Pt [Cell VI]; Pt, SrFe2W-SrM-Fe2O3/ZrO2(+CaO)/O2 (pure, PO2=101325 Pa), Pt [Cell VII]; Pt, SrFeX-SrFe2W-SrM/ZrO2(+CaO)/O2 (pure, PO2=101325 Pa), Pt The obtained results are summarized as follows: Reaction in the cell I ; 2Ni+O2=2NiO
(This article is not displayable. Please see full text pdf.) Reaction in the cell II ; 4Fe3O4+O2=6Fe2O3
(This article is not displayable. Please see full text pdf.) Reaction in the cell III and IV ; 2BaFe2W+O2=2BaM+6Fe2O3
(This article is not displayable. Please see full text pdf.) Reaction in the cell V ; (y+2⁄2(x−y)) (BaO·FexO·7Fe2O3) + O2 = (2+x⁄4(x−y)) (BaO·2FeyO·8Fe2O3) + (2y+2−x⁄4(x−y)) (BaO·6Fe2O3)
(This article is not displayable. Please see full text pdf.) Reaction in the cell VI ; 2SrFe2W+O2=2SrM + 6Fe2O3
(This article is not displayable. Please see full text pdf.) Reaction in the cell VII ; (y+2⁄2(x−y)) (SrO·FexO·7Fe2O3) + O2 = (2+x⁄4(x−y)) (SrO·2FeyO·8Fe2O3) + (2y+2−x⁄4(x−y)) (SrO·6Fe2O3)
(This article is not displayable. Please see full text pdf.)抄録全体を表示PDF形式でダウンロード (864K) -
前 健彦, 野村 弘明, 大久保 純一, 能登谷 久公, 新井 甲一1991 年 55 巻 4 号 p. 405-411
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーIn order to obtain fundamental information on the corrosion characteristics of Al-Ga alloy, anodic dissolution behavior of Al-Ga solid solution alloy in a dilute HClO4 solution was investigated by the measurements of the anodic polarization curves of Al, Ga and Al-Ga alloy electrodes, the X-ray diffraction analysis of the corrosion products on the electrode surface and the SEM observation of the electrode surface after the corrosion test.
The main experimental results obtained are summarized as follows:
(1) The corrosion potentials of Al-Ga alloy electrode in a dilute HClO4 solution depend on both the content of Ga in the alloy and the solution temperature. The corrosion potentials decrease with an increase in the Ga content and the solution temperature, and the corrosion resistance of the alloy is decreased. However, the corrosion potentials of the alloy are almost constant at the Ga contents more than 5 mass%.
(2) The dependence of the corrosion behavior of Al-Ga alloy electrodes on the solution temperature changes at about 298 K. The corrosion rate is inhibited by the formation of hydroxides such as Al(OH)3, Ga(OH)3 and β-Ga2O3 at the temperature lower than 298 K. However, the corrosion rates increase with an increase in the temperature above 298 K.
(3) The corrosion of Al-Ga alloy proceeds by selective dissolution of Al component from the grain boundary layer of the alloy.
(4) The corrosion rates of Al-Ga alloy decrease in the order Al-4.7 mass%Ga alloy≥Al-15.8 mass%Ga alloy>Al-0.675 mass%Ga alloy>pure Al>pure Ga.抄録全体を表示PDF形式でダウンロード (1523K) -
布田 雅裕, 川原 業三, 杉本 克久1991 年 55 巻 4 号 p. 412-418
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe effect of alloy composition on the rate-control process of electrolytic boriding of Fe-Cr-Ni alloys has been examined in a molten alkali salt with the low melting point using electrochemical and metallographic techniques. Electrochemical measurements showed no significant difference between the cathodic polarization curves for Fe-Cr and Fe-Ni alloys containing Cr or Ni up to 30 mass%. Meanwhile, metallographic measurements showed that an increase in the thickness of boride layer with decreasing potential occurs in the case of boriding of Fe, Ni, and Fe-20Ni alloy but dose not occur in that of Cr, Fe-20Cr, and Fe-18Cr-8Ni alloys. This means the diffusion rate of B is high in the boride layers of the former metals and alloy but low in those of the latter metal and alloys. Therefore, it is presumed that the electrodeposition rate of B should control the boriding rate on the former metals and alloy but the diffusion rate of B in the boride layers on the latter metal and alloys. Cr in Fe-Cr-Ni alloys inhibits the diffusion of B in the boride layer of the alloys.抄録全体を表示PDF形式でダウンロード (888K) -
戸嶋 茂郎, 水流 徹, 中川 善隆, 広瀬 祐輔1991 年 55 巻 4 号 p. 419-423
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe effects of pH and Cl− concentration on the corrosion behaviour of iron in methanol solution have been investigated. In the pH range of neutral to 2.5, it is found that anodic polarization curves do not change dramatically, and the passive state is clearly observed. However, at pH 2.0, iron does not exhibit passive behaviour. Furthermore below pH 1.5, the corrosion potential shifts to a more negative value and the uniform dissolution is observed. On the other hand, lowering of the pH value causes an increase in cathodic current around the corrosion potential. Therefore, it can be presumed that methanol itself plays a role of the oxidant in the corrosion of iron in methanol solution at a low pH value. Anodic polarization behaviour is affected enormously by the presence of Cl−. In the methanol solution containing only 10 ppm of Cl−, the anodic dissolution current is increased about two orders of magnitude.抄録全体を表示PDF形式でダウンロード (666K) -
富田 友樹, 高谷 泰之, 橋詰 源蔵, 原田 良夫1991 年 55 巻 4 号 p. 424-430
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーIn order to develop oxidation- and wear-resistant coatings, Ni-Cr-Fe overlay weld alloys with dispersed NbC particles were formed on a mild steel by a plasma powder welding process using mixed powders of Ni-50 mass%Cr alloy and NbC. Effects of the dispersion of NbC particles on the high-temperature oxidation characteristics of Ni-Cr-Fe overlay weld alloys have been studied by the measurement of mass gain and the observation of oxide scale during the cyclic heating between 1173 K and room temperature in the air.
The NbC particles existing on the surface of Ni-Cr-Fe overlay weld alloys were rapidly oxidized at above the temperature of 820 K and changed to Nb2O5. For the alloys with more than about 25 mass%Cr, the mass gain in oxidation and the amount of spalling of oxide scale were small at any NbC content, because a continuous and protective oxide layer of Cr2O3 was not only built up on the surface of the matrix alloy, but also at the interface between Nb2O5 and matrix alloy.
In contrast, for the alloys with less than about 25 mass%Cr, the thick oxide scales of Fe2O3 and Ni (CrFe)2O4 were built up on the matrix alloy. Large amounts of spalling of oxide scale have been obtained, because the oxidation of NbC particles involved in the oxide scales must have accelerated their exfoliation.抄録全体を表示PDF形式でダウンロード (2204K) -
田口 正美, 栗原 二郎1991 年 55 巻 4 号 p. 431-436
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe progress of nitriding followed the parabolic rate law and the apparent activation energy was calculated to be 208 kJ·mol−1 at the temperature range 1073-1473 K. By X-ray analysis, the surface product was identified to be Ti2N at 873-973 K, and a mixture of Ti2N and TiN at 1073-1273 K. The corrosion resistance of the titanium nitrides increased with rise in nitriding temperature, although the nitrides formed at 873 K and 973 K were easily attacked in 1 kmol·m−3 H2SO4 at 373 K. The dissolved amount of titanium for the nitrides at the temperatures above 1173 K was 3 orders of magnitude smaller than that for the untreated specimen, and moreover it was smaller than that for the TiN film (TiN0.891) formed by reactive ion plating. These results explained that a very thin layer which was composed of TiN or higher nitride existed above the mixture of Ti2N and TiN and was hardly corroded. If the mixture of Ti2N and TiN was corroded, Ti2N was selectively attacked and corrosion proceeded through the small cavities extending into the base metal. On the other hand, the dissolution rate of the TiN film was lower than that of the Ti2N film (TiN0.578) formed by reactive ion plating, and the corrosion resistance was comparable with that of the titanium passivated by oxygen.抄録全体を表示PDF形式でダウンロード (1033K) -
近藤 英一, 中江 秀雄1991 年 55 巻 4 号 p. 437-443
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーGroove depth of the non-faceted phase at the solid-liquid interface and spacing of the faceted phase were measured for vertically solidified austenite-graphite irregular eutectics to investigate the effect of the addition of interfacial active element sulphur.
Groove depth, δ (mm), and inter-graphite spacing, λ (mm), were expressed as functions of solidification rate R(mm/s):
(This article is not displayable. Please see full text pdf.)
Groove depth was strongly influenced by the growth condition in the groove, for example, the temperature distribution in the groove, and was not so much influenced by the local growth condition at the eutectic tips which protrude into liquid; and it increased with a small addition of sulphur.
Inter-graphite spacing decreased with decreasing sulphur, and approached the theoretical value derived by Jackson and Hunt if the eutectic tips were aligned on and the growth directions of the tips were perpendicular to the macroscopic solid-liquid interface plane; and it increased with a small addition of sulphur.抄録全体を表示PDF形式でダウンロード (1171K) -
森 信幸, 宮原 広郁, 古閑 正明, 大城 桂作1991 年 55 巻 4 号 p. 444-451
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe influence of Ni ion plating 0.1 to 3.1 μm thick on the wettability of molten Al to Al2O3 was measured by the sessile drop method in a vacuum of 2×10−3 Pa at temperatures from 973 to 1173 K. The wetting angle of molten Al to Al2O3 decreased from 110° to 90° as the temperature rose from 973 to 1173 K. Ni coating on Al2O3 reduced the wetting angle to less than 10° when the thickness of coating was larger than 0.1, 0.5, and 0.8 μm at 973, 1073 and 1173 K, respectively. The thinner Ni coating could not improve the wettability, because the Ni deposits on Al2O3 were coagulated by surface tension and pores were generated in Ni coating. The development of pores became more remarkable as temperature rose, making the molten Al which once spread on the Ni coating move back towards the receding wetting angle to Al2O3. The interaction between the coated Ni and the molten Al was also metallographically investigated.抄録全体を表示PDF形式でダウンロード (2651K) -
江崎 宏樹, 時実 正治1991 年 55 巻 4 号 p. 452-458
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーThe mixture of elemental powders of Ni (87 mass%(76 at%)) and Al(13 mass%(24 at%)) was offered to a mechanical alloying process. The processed powder was vacuum hot pressed at 1223 K for 3.6 ks under 200 MPa. The compact has an ultra-fine grain (average grain diameter=0.1 μm) structure consisting of Ni3Al intermetallic compound and having relative density of approximately 100%. Grain growth up to 1.2 μm in average grain diameter occurred in the compact annealed at 1473 K for 72 ks. Both the as-hot pressed and the annealed compacts showed extremely high compressive strength at room temperature, while they showed rather poor ductility. Then, so called “positive temperature dependence” of 0.2% proof stress was not observed in these cases. In the case of the annealed compact, a large value of strain rate sensitivety exponent, m=0.60 was obtained and a typical dynamic recrystallization was observed during compressive deformation at 973 K and an initial strain rate of 6.7×10−4 s−1. From these results, the compressive deformation of the annealed compact presumed to proceed by superplastic flow controlled by a dynamic recrystallization.抄録全体を表示PDF形式でダウンロード (2464K) -
鴨田 秀一, 酒井 昌宏, 宮腰 康樹, 田頭 孝介1991 年 55 巻 4 号 p. 459-465
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーBonding of ductile cast iron and mild steel was carried out using thermal spray coatings of nickel-cromium-carbon self-fluxing alloy in Ar gas. The effects of bonding conditions on the structure and strength of joints were studied. The joints with excellent metallographic structures were obtained for bonding temperatures near the melting point (1283-1293 K) of the spray coatings.
For the bonding temperature of 1273 K or bonding time shorter than 0.18 ks, unmelted parts remained in the sprayed layer. Three different kinds of precipitates, needle type, randomly aggregated type and dispersed angular type, were observed in the sprayed layer in the order from the cast iron side to the mild steel side. They were coarsened and expanded toward the mild steel side with increasing bonding temperature. The tensile strength of bonded joints was maximum when the temperature was nearly equal to the melting point of the spray coatings. It decreased at temperatures higher than 1303 K. Fractures occurred at the randomly aggregated precipitates for the bonding temperatures over 1283 K. The precipitates observed in the sprayed layer might be chromium boride and chromium carbide or their mixture.抄録全体を表示PDF形式でダウンロード (2549K) -
李 敬鋒, 川崎 亮, 解 子章, 渡辺 龍三1991 年 55 巻 4 号 p. 466-471
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーA simple test method using small sized specimens is often required for the effective development of ceramic materials. In the present work, the Modified Small Punch (MSP) test was employed for evaluating the thermal shock resistance of Y2O3-ZrO2 and SiC ceramics.
The change in strength after quenching from various temperatures was evaluated accurately by the MSP test. The load vs. deflection curves obtained by the MSP test provided more detailed information about the thermal shock by quenching. It has been found that the measured values of the critical temperature difference which indicates the thermal shock resistance of the ceramics are in good agreement with the theoretically calculated values for the materials investigated in the present work. The results show that the combination of water quenching and MSP test is effective for the evaluation of thermal shock resistance of ceramics.抄録全体を表示PDF形式でダウンロード (1409K) -
竹内 孝夫, 小菅 通雄, 飯嶋 安男, 長谷川 晃, 木吉 司, 松本 文明, 井上 廉1991 年 55 巻 4 号 p. 472-480
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーMicrostructure of Nb tube processed Nb3Al multifilamentary wires was studied by an X-ray diffractometer, a transmission electron microscope, etc., and its effect on superconducting properties was discussed from the viewpoint of Al-core sizes, heat treatments and additive elements. Samples with various Al-core diameters were prepared by arranging the filament numbers and final composite diameters. With decreasing Al-core sizes, the volume ratio of A15 phase to other intermediate phase increased, but the lattice parameter of A15 phase decreased conversely. This was accompanied by an increase in Tc and Hc2 (4.2 K), suggesting that the small diffusion spacing between Nb and Al, which was realized by reducing the Al-core size, facilitates to form the metastable A15 phase with the composition near stoichiometry. However, both the n value of voltage-current characteristics and its magnetic field dependence were remarkably decreased when the Nb/Al composite was heavily cold-drawn into Al-core sizes below 50 nm, suggesting that the Al filament “sausaging” caused by heavy cold-drawing is one of the reasons for degradation in superconducting properties at small Al-core sizes. TEM microstructures were in good agreement with reported ones of Nb/Al multilayer thin films. Alloying Al-cores, which are essential to improve the workability of Nb/Al composites, influences the superconducting properties through the diffusion reaction. Additive elements of Ag and Mg facilitate the formation of the A15 phase with excellent superconducting properties at a low reaction temperature (below 1200 K). They enable the Nb/Al composite to be used for alternating current (ac) superconductors, since ac conductors consisting of resistive Cu alloy matrix must be heat treated below 1200 K. On the other hand, the addition of Cu, which depresses the A15 phase formation rate, is suitable for the high-field superconductors, since it makes it easy to control the high temperature heat treatments for short periods.抄録全体を表示PDF形式でダウンロード (2018K) -
末吉 秀一, 大園 義久1991 年 55 巻 4 号 p. 481-487
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーIn Japan, Sn-Pb alloys have been used as materials for utensiles and vessels. However, Pb is undesirable in the utensiles and vessels because of its toxicity. For developing Pb-free Sn alloys having excellent machinability, high strength, and pear-like surface morphology, Sn-Bi alloys were studied from the view-point of hardness, microstructure, surface morphology, and machinability.
Hardness equivalent to that of Sn-Pb alloys is obtained by the addition of 1%Bi. Hardness of Sn-Bi alloys is attributable to solid-solution hardening up to 2%Bi, but thereafter to dispersion hardening. Microstructure of Sn-Bi alloys depends upon solidification rate. In rapid cooling fine Bi particles crystallize uniformly in Sn matrix, while in slow cooling Bi particles crystallize along grain boundaries. When the latter is etched with HNO3, the etched surface results in pear-like morphology. Sn-Bi alloys exhibited an excellent chip-disposability because Bi particles promote the crack propagation in chip. Surface roughness decreases as Bi content increases up to 2%, but thereafter yields to a saturation behavior. The decrease of surface roughness is caused by matrix-embrittlement due to the addition of Bi.抄録全体を表示PDF形式でダウンロード (2538K) -
木塚 徳志, 市野瀬 英喜, 石田 洋一1991 年 55 巻 4 号 p. 488-489
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーPDF形式でダウンロード (591K) -
1991 年 55 巻 4 号 p. 490
発行日: 1991年
公開日: 2008/04/04
ジャーナル フリーPDFを参照． （誤）(2) T. Iizuka: Jpn. J. Appl. Phys. Lett., 24 (1974), 157. （正）(2) T. Iizuka: Jpn. J. Appl. Phys., 5 (1966), 1018.抄録全体を表示PDF形式でダウンロード (20K)
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