| Mo+PCS烧结体的相组成和组织结构研究 |
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| 引用本文： | 钟文丽,白书欣,张虹.Mo+PCS烧结体的相组成和组织结构研究[J].兵器材料科学与工程,2009,32(2). |
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| 作者姓名： | 钟文丽 白书欣 张虹 |
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| 作者单位： | 国防科技大学航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 以聚碳硅烷(PCS)为先驱体,同时混以钼粉,利用聚碳硅烷高温发生裂解形成新化合物的特性,制备出钼基复合材料。主要考察了用此种原料制备钼基复合材料的工艺,及所得材料的相组成及组织结构特点,并对烧结过程中发生的化学反应进行了探讨。结果表明:在N2气氛下烧结,PCS+Mo粉烧结体在PCS质量分数低于18%时能烧结成形。烧结体由多相组成,基体相为Mo,复合相为MoxCy,两相相间分布,基体相占大的体积分数,界面上存在有富Si相。
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| 关 键 词： | 钼基复合材料 粉末冶金 聚碳硅烷 烧结体 相组成 |
Study of phase composition and microstructure of molybdenum +PCS sintering bodies |
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| ZHONG Wenli,BAI Shuxin,ZHANG Hong.Study of phase composition and microstructure of molybdenum +PCS sintering bodies[J].Ordnance Material Science and Engineering,2009,32(2). |
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| Authors: | ZHONG Wenli BAI Shuxin ZHANG Hong |
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| Affiliation: | College of Aerospace and Material Engineering;National University of Defense Technology;Changsha 410073;China |
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| Abstract: | Using polycarbosilane as precursor, mixed with molybdenum powders, molybdenum-based composites were fabricated. The preparation process, the phases composition, the microstructure and mechanical properties, including the reaction equa- tions were analyzed. The results showed that the molybdenum-based composites sintered under the atmosphere of nitrogen can keep their original shapes when the weight fraction of polycarbosilane is under 18%. There are two phases in the composites: one is molybdenum, the other... |
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| Keywords: | molybdenum-based composites powder metallurgy polycarbosilane sintering body phase composition |
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