巻号一覧
26 巻, 1 号
選択された号の論文の17件中1～17を表示しています
- |<
- <
- 1
- >
- >|
-
沼倉 健一1962 年 26 巻 1 号 p. 1-4
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーHot-rolled “Alfer” sheets containing 12.29 per cent of aluminum were heated for one hour at some temperatures from 300°C to 1200°C, then quenched in liquid nitrogen from the heating temperature, and the magnetostriction, the Young’s modulus and the saturation magnetization were measured. In general, the saturation magnetostriction decreased almost linearly to a minimum at 500°C with rise of quenching temperature from 300°C to 500°C, then increased slowly with rise of quenching temperature. On the contrary, the Young’s modulus generally increased to a maximum at 500°C with rise of quenching temperature, then decreased abruptly, and showed again the tendency of slight increase above 800°C, although there was a minimum at 450°C at 0° or 90° to the roll direction. The saturation magnetization decreased to a minimum at 450°C, but increased abruptly at 500°C, then showed the tendency of slightly increasing until the quenching temperature at 800°C, and decreased again at 1000°C. From the results obtained, it may be inferred that the effect of thermal stress caused by the above subzero quenching is largest at 500°C, and becomes smaller at the temperatures above or under 500°C.抄録全体を表示PDF形式でダウンロード (424K) -
立原 芳彦, 秦 卓也, 花田 武明1962 年 26 巻 1 号 p. 5-8
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーIn the production of recieivng tubes having barium oxide coated cathodes, the quality of grid wire material, its surface condition, grid wire temperature and the condition in bulb-pumping procedure have been pointed out as the general factors which cause grid emission so far. Besides the above factors, we found that the crystal structure of core nickel is also the cause of grid emission. It has been confirmed that the free barium produced by the chemical reaction between barium oxide coating and core nickel diffuses to be absorbed into the crystal grain boundaries of the core nickel. Thus, it has been concluded by determination of free barium atoms diffuse into core nickel that the more the nickel grain boundaries exist in the core surface, the lower the grid emission becomes.抄録全体を表示PDF形式でダウンロード (508K) -
寺沢 正男1962 年 26 巻 1 号 p. 8-11
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーIn this paper, the change in creep resistance of lead and lead-antimony alloys due to silicon content is described. Specimens used in this study were extruded wires of 2 mm diameter and the testing temperature was from 29 to 31°C. The results obtained were as follows: (1) The creep resistance properties of lead and lead-antimony alloys were improved by addition of silicon. An increase of silicon and antimony content in lead seemed to increase the creep resistance at high stress. (2) The creep rate in 100 hrs of lead and its alloys was decreased generally by addition of silicon. (3) The time required for 1% elongation in lead-silicon alloys was longer than in lead, in lead-antimony-silicon alloys was generally longer than in lead-antimony alloy and the value at low stresses was similar to that of lead.抄録全体を表示PDF形式でダウンロード (313K) -
木村 康夫1962 年 26 巻 1 号 p. 12-17
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーSpecimens of the permanent magnet alloy “Vicalloy” composed of 2∼6%Cr, 6∼10%V, 52%Co, balance Fe were subjected to reducing 93% by cold rolling and to subsequent tempering at temperatures varying between 20 and 800°C. The measured magnetic properties were saturation magnetization, residual induction, coercive force and magnetic torque. Severe cold-rolling produces the uniaxial roll magnetic anisotropy, in which the easy magnetic direction is perpendicular to the rolling direction. In cold-rolled state, the lower the (Cr+V) content of Vicalloy, the roll magnetic anisotropy is the larger. After tempering cold-rolled Vicalloy at 350∼400°C, the residual induction and the coercive force in rolling direction take the same values as in cross direction, and roll-magnetic anisotropy disappears. By tempering at 500∼600°C, the easy magnetization direction becomes parallel to the rolling direction and the maximum value of coercive force is obtained. As the (Cr+V) content increases, the coercive force increases, but the saturation magnetization decreases. The permanent magnet characteristics of Vicalloy may be explained by an uniaxial magnetic anisotropy which may be caused by either the shape anisotropy or the strain anisotropy of the specimen.抄録全体を表示PDF形式でダウンロード (734K) -
松田 正美1962 年 26 巻 1 号 p. 17-20
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe failure of marine propeller shaft made by high strength α+β brass has been described. Metallurgical examination of failure part, measurement of stray current and electrolytic corrosion test have been carried out to determine the exact cause of failure. These tests led to the conclusions as follows: (1) The cause of the failure seems to be the combined effect of dezincification due to stray current and axial torsion stress of shaft. (2) The corrosion rate of shaft was more than 4 mm per year and is much more rapid than the usual dezincification rate. (3) The alternative effect of stray current and fracture of the dezincification layer by axial torsion increased the corrosion rate. (4) The shell pattern on fracture section and the Hartman’s pattern developed on the dezincification layer of shaft in dicate that the cause of failure of shaft is corrosion fatigue.抄録全体を表示PDF形式でダウンロード (717K) -
足立 正雄, 辻本 得蔵1962 年 26 巻 1 号 p. 21-25
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe effects of Al, Co and Ti2Co precipitates on the mechanical properties were examined by tensile testing, hardness measurement and structure analysis. The results obtained were as follows: α phase is strengthened by Al. and β phase is strengthened markedly by Co, but not by Al. Ti2Co increases the strength of structure, when the precipitating temperature is low and the precipitate is fine. Considering these effects, it can be explained that for the specimen containing less than 4%Al, the strength becomes minimum when it has α+β+Ti2Co structure. For some of these specimens the yielding phenomena were observed. Generally, α+β+Ti2Co structure has low strength and elongation, and the elongation of α+β structure was found to be larger than that of α+Ti2Co structure, upon comparing the α+β structure with the α+Ti2Co structure which has the same strength.抄録全体を表示PDF形式でダウンロード (839K) -
田中 実, 梅川 荘吉1962 年 26 巻 1 号 p. 25-30
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe object of this paper is to observe the strain distributions of Charpy V-notch test pieces broken in the range of 100°C to −196°C. Some fine-grained (grain size 10μ) and coarse-grained (grain size 78μ) test pieces of a low carbon steel were tested. The transition temperatures were evaluated at −10°C for the fine grained samples, and at 40°C (Trf) and at 0°C (Trd) for the coarse grained samples based on the load-time curves and the absorbed energy-temperature curves. The strain distributions were examined on the longitudinal outer surface (named X·Y plane), and the central section (named (X·Y)M plane) which are both vertical to the notch of test piece. The strain distributions at the surface and the central section were measured by means of the microhardness test and the recrystallized grain observation, and also the amount of strain on the surface was confirmed by the distortion of the fine intercrossing which were printed photographically. The results obtained in this study are summarized as follows: (1) The strained region of (X·Y)M plane spreads less than that of (X·Y) plane in all the cases. (2) Above the transition temperature, a strain of more than 10% appears over a wide region of 4∼8 mm in breadth along the notch and the fractured face on the (X·Y) plane, and of 4∼5 mm in breadth along the fractured face only on the (X·Y)M plane. The minimum amount of strain at about 1 mm apart from the fractured face is estimated to be 30% on the (X·Y) plane and 25% on the (X·Y)M plane. (3) At the transition temperature, the strain of about 10% appears over a region of 1.5∼2 mm in breadth nearly parallel to the fractured face on the (X·Y) plane. The strained region on the (X·Y)M plane, however, spreads circularly in a narrow band below the notch, and the amount of strain in this band is estimated to be about 7∼8%. (4) Below the transition temperature, a little strained region appears in the vicinity of the fractured face on the (X·Y) plane: besides this, strained regions are hardly detectable except some twins on (X·Y)M plane. (5) The volume of strained region corresponds to the crack initiation energy which is estimated from the load-time curve. (6) Although the transition temperature depends distinctly on the grain size of the test piece, the size of strained region is mainly affected by the test temperature level, not by the grain size.抄録全体を表示PDF形式でダウンロード (1309K) -
坂尾 弘, 佐野 幸吉1962 年 26 巻 1 号 p. 30-34
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーAn experimental study was carried out on the equilibrium of the reaction between oxygen dissolved in liquid Fe-Ni, Fe-Co and Ni-Co alloys and H2-H2O gas mixture. The experimental results at 1600°C were as follows:
(This article is not displayable. Please see full text pdf.)
\ oindentFrom these data, the interaction parameters were determined as follows:
(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 (424K) -
坂尾 弘, 佐野 幸吉1962 年 26 巻 1 号 p. 34-38
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe equilibrium of the reaction between oxygen dissolved in liquid Fe-Ni-Co alloys and H2-H2O gas mixtures has been measured at 1600°C. The effects of nickel and cobalt on the activity coefficient of oxygen in liquid iron are represented by the following equations:
(This article is not displayable. Please see full text pdf.)
\ oindentwhere the reference state is the infinitely dilute solution of oxygen in liquid pure iron. From these data, the isoactivity coefficient curves for oxygen in the ternary alloy field were drawn. The possibility to predict the activity coefficient of oxygen in the ternary alloy from the interaction coefficients was examined.抄録全体を表示PDF形式でダウンロード (559K) -
五弓 勇雄, 岩田 寿郎, 堀内 良1962 年 26 巻 1 号 p. 39-43
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe drawing of wire through drawing die has a long history and various advantages, but the difficulty associated with the method is that the friction in the drawing cone is large and this causes many troubles. Hence, an attempt was made by the authors to improve the wire drawing process by means of a new wire drawing tool in which the friction conditions are essentially improved. The wire drawing tool, named the roller dies, consists of rollers with a groove on it. The wire is drawn through the die formed by the grooves, and the rollers rotate freely as the wire is drawn through. Tests of the capacities of the roller dice in the laboratory as well as in drawing shops in the case of drawing of aluminium and copper wire were carried out. The results showed the following features (1) low power consumption, (2) high permissible areal reduction in one pass, (3) no need of lubricant of high quality. The properties of the drawn wire were nearly the same as those of the wire drawn with ordinary dies.抄録全体を表示PDF形式でダウンロード (829K) -
深津 保1962 年 26 巻 1 号 p. 43-47
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe structures and the properties of binder phase of 70%TiC-30%Ni composition sintered at various temperatures for 1 hr in hydrogen have been investigated by means of X-ray diffraction and thermomagnetic analysis. At about 800°C, titanium carbide begins to diffuse into nickel, the solubility of TiC increased up to 1.5% with rise of the sintering temperature below eutectic temperature and about 1% of TiC remained in binder phase of the alloy sintered above eutectic temperatures. Free carbon content increased gradually during the sintering up to 0.9% by weight, therefore we considered that carbon precipitates during the sintering process of TiC-Ni composition. It was also pointed out that the binder of TiC-Ni cermet must contain excess titanium, and actually, precipitation of graphite in binder phase was observed on the microstructure of TiC-Ni composition sintered above eutectic temperatures. Therefore, in the process of sintering TiC-Ni cermet precipitation of free carbon must be strictly avoided. From this point of view, it has been proposed to add some metal powders, such as molybdenum which combines easily with carbon. It wasfound that molybdenum metal is very suitable for this purpose.抄録全体を表示PDF形式でダウンロード (855K) -
青木 宏一, 関野 昌蔵, 藤島 敏行1962 年 26 巻 1 号 p. 47-51
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーIt has been proved that the interstitially solved N and C can be measured quantitatively using the transverse vibration at about 600 c/s, as well as the torsional vibration. The propotional coefficients are influenced by grain size and impurities, but are practically [wt%N or C]=0.0043×T×(Q−1)max, where T is the peak temperature, (Q−1)max, the Snoek peak height. It has been also ascertained that the Snoek peak height is inversely propotional to the peak temperature between 100 and several 1000 c/s as predicted by the theory.抄録全体を表示PDF形式でダウンロード (619K) -
西村 山治, 森山 徐一郎, 久島 亥三雄1962 年 26 巻 1 号 p. 52-55
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーIn this report the liquid-liquid solvent extraction and separation of Ta and Nb by using tributyl phosphate (TBP) as an organic solvent and hydrofluoric acid solution as a aqueous solution was studied. The extractability of a fluoride complex of Ta and Nb from HF solution into TBP was found to be a function of HF acidity, TBP concentration, oxide concentration, organic solvent ratio, and number of extraction operation. The results obtained can be summarized as follows: (1) %Ta extracted and Ta distribution coefficient decreased with an increase of HF acidity at constant TBP concentration, but decreased with a decrease TBP concentration at constant HF acidity. %Nb extracted and Nb distribution coefficient rose with a rise of HF acidity and TBP concentration. (2) The separation factor augmented with diminishing HF acidity, especially under 3NHF. (3) Both %Ta and %Nb extracted fell in opposition to rising oxide concentration in aqueous solution. (4) Increase in solvent ratio and number of extraction operation caused increase of both %Ta and %Nb extracted. (5) The organic extract made with by TBP included little impurity. (6) HF-TBP system had larger extraction efficiency of Ta and Nb, particularly in low HF acidity, better separation factor and higher purity of organic extractive and separative system in liquid-liquid extraction of Ta and Nb at present.抄録全体を表示PDF形式でダウンロード (659K) -
西村 山治, 森山 徐一郎, 久島 亥三雄1962 年 26 巻 1 号 p. 56-59
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe method for extracting and separating Ta and Nb by using the solvent extaction system, hydrofluoric acid-sulphuric acid-tributyl phosphate (TBP), was investigated. The extractability of fluotantalates and fluoniobiates from HF-H2SO4 solution into TBP was found to be a function of HF acidity, H2SO4 acidity, TBP concentration, oxide concentration, organic solvent ratio, and number of extraction operation. The results obtained can be summarized as follows: (1) %Ta extracted and Ta distribution coefficient increased with an increase of H2SO4 acidity at constant HF acidity, but decreased with increasing HF acidity at constant H2SO4 acidity. They diminished with a decrease of TBP concentration. %Nb extracted and Nb distribution coefficient augmented with increasing HF acidity, H2SO4 acidity, and TBP concentration. (2) In general, the separation factor was superior in low HF acidity-low H2SO4 acidity, but inferior in high HF acidity-high H2SO4 acidity. It varied little by change in TBP concentration. (3) Both %Ta and %Nb extracted fell in opposition of rising oxide concentration in aqueous solution. (4) Augmenting solvent ratio and number of extraction operation caused increase of both %Ta and %Nb extracted. (5) The extract made with TBP included little impurity. (6) HF-H2SO4-TBP system had larger extraction efficiency of Ta and Nb, particulary in extracting Nb, and higher purity of organic extract than HF-H2SO4-Hexone system, which is used as the industrial extractive and separative system in liquid-liquid extraction of Ta and Nb at present.抄録全体を表示PDF形式でダウンロード (475K) -
西村 山治, 森山 徐一郎, 久島 亥三雄1962 年 26 巻 1 号 p. 60-65
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe mechanism of Ta extraction by TBP in Ta-Hydrofluoric acid-TBP (tributyl phosphate) system was investigated in this report. The results obtained can be summarized as follows: (1) Ta present at lower HF acidity seemed to be essentially HTaF6, at higher HF acidity H2TaF7, and at still higher HF acidity H3TaF8. (2) One molecule of Ta compounds present at various HF acidity combined with three molecules of TBP organic solvent, and was extracted by TBP in the form of Ta compound-3 TBP complex. (3) At higher degree of polymerization of Ta in aqueous phase than in organic phase, the Ta distribution coefficient and the percentage of Ta extracted became lower. At higher HF acidity the Ta polymerization number in aqueous phase was constant and larger than that in organic phase, independent of the influence of Ta concentration in aqueous phase, but of lower HF acidity, the ratio of polymerization number in aqueous phase to that in organic phase was larger at higher Ta concentration, but was smaller at lower Ta concentration. (4) The process of Ta-HF-TBP extraction was exthothermic reaction, and the heat of extraction was 2.41 kcal/mol in the condition of 6.36N HF acidity and Ta concentration of 16 g/L. (5) The rate-controlling step in the extraction of Ta in Ta-HF-TBP extractive system seemed to be the formation reaction of Ta compound-3TBP complex. (6) In this extractive system, the Ta concentration in aqueous phase dependent on the distance from the interface showed little change, but the change in TBP phase was remarkable. (7) The activation energy for diffusion of Ta species present in 1.28N HF solution was 3.495 kcal/mol, and that of Ta compound-3TBP complex in TBP phase was 5.836 kcal/mol.抄録全体を表示PDF形式でダウンロード (847K) -
山中 直道, 日下 邦男1962 年 26 巻 1 号 p. 65-70
発行日: 1962年
公開日: 2008/04/04
ジャーナル フリーThe effect of phosphorus on the properties of 18Cr-10Ni-0.5W-0.5Mo-0.25Cb-type austenitic stainless steels with or without addition of nitrogen was studied. The results obtained were as follows: (1) Phosphorus increased the maximum hardness obtained by aging after quenching from 1150°C. The austenitic steel containing 0.23%C; 0.26%P and 0.15%N had a yield strength (0.2%) of 90 kg/mm2, elongation of 22% and low magnetic permeability of 1.003 in the hardened condition. (2) Against boiling 40%HNO3 and boiling 20%CH3CO2H solution, the austenitic steel containing phosphorus had good corrosion resistance in the hardened condition, although the corrosion loss was increased slightly with increase of the phosphorus and carbon contents.抄録全体を表示PDF形式でダウンロード (643K) -
金子 秀夫, 西沢 泰二, 田中 熙巳1962 年 26 巻 1 号 p. 71
発行日: 1962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 (228K)
- |<
- <
- 1
- >
- >|