粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
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9 巻, 1 号
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  • 液相焼結現象の研究(第1報)
    Cu-Agの焼結について
    岡本 雄二
    1962 年 9 巻 1 号 p. 1-6
    発行日: 1962/02/25
    公開日: 2009/05/22
    DOIhttps://doi.org/10.2497/jjspm.9.1
    ジャーナル フリー
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    Microstructure changes, particle growth and the rate of densification during sintering of Cu-Ag in the presence of a liquid phase have been observed. Rapid densification occurred in the early stage of sintering, and more rapidly as the amount of liquid phase and temperature increased.
    Particle growth by the solution-precipitation process was observed in this system. In a large amount of liquid, particles were larger in initial stage and smaller in final stage than in a small amount.
    Using spherical copper powders, it has been found that the starting particles was disintegrated into smaller particles.
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  • CrSi2の調製およびその二,三の性質について
    田村 皖司, 武田 徹
    1962 年 9 巻 1 号 p. 7-10
    発行日: 1962/02/25
    公開日: 2009/12/04
    DOIhttps://doi.org/10.2497/jjspm.9.7
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    Some basic properties of CrSi2 as a refractory hard material have been investigated. CrSi2 powder was prepared by arc melting of pure chromium and silicon mixture in an argon atmosphere and subsequently crushed by ball mill. This powder was then hot-pressed in vaccum.
    The specimens obtained were subjected to various tests, the results of which are summarized as follows.
    1 The optimum temperature in hot-pressing of CrSi2 was 1350°C. The density attained 97.0% of the theoretical value.
    2 Corrosion resistances to three kinds of dilute acids were superior to any other Disilisides which we had studied.
    3 The oxidation resistance at 1200°C was 0.0011g/cm2/day.
    4 Electrical resistance at room temperature was 646×10-6Ω-cm, 1900×10-6Ω-cm at 800°C.
    5 Thermo electromotive force at room and high temperature was 30 to 60 times higher than that of MoSi2 and TiSi2.
    6 In general, the hardness in hot state decreases with rising temperature. For instance, it was 280 at 800°C.
    7 Modulus of rupture at 800°C was 21.3kg/mm2.
    8 The thermal shock resistance of CrSi2 was poor.
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  • 記録用磁性材料シンポジウム講演
    1962 年 9 巻 1 号 p. 11-46
    発行日: 1962/02/25
    公開日: 2009/05/22
    DOIhttps://doi.org/10.2497/jjspm.9.11
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