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金属学报  2013, Vol. 49 Issue (11): 1303-1310    DOI: 10.3724/SP.J.1037.2013.00527
  论文 本期目录 | 过刊浏览 |
原位合成MoSi2-SiC复合材料在500℃的氧化行为
张来启,潘昆明,段立辉,林均品
北京科技大学新金属材料国家重点实验室, 北京 100083
OXIDATION BEHAVIOR OF IN SITU SYNTHESIZED MoSi2-SiC COMPOSITES AT 500℃
ZHANG Laiqi, PAN Kunming, DUAN Lihui, LIN Junpin
State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing, Beijing 100083
引用本文:

张来启,潘昆明,段立辉,林均品. 原位合成MoSi2-SiC复合材料在500℃的氧化行为[J]. 金属学报, 2013, 49(11): 1303-1310.
ZHANG Laiqi, PAN Kunming, DUAN Lihui, LIN Junpin. OXIDATION BEHAVIOR OF IN SITU SYNTHESIZED MoSi2-SiC COMPOSITES AT 500℃[J]. Acta Metall Sin, 2013, 49(11): 1303-1310.

全文: PDF(4936 KB)  
摘要: 

研究了不同SiC体积分数原位合成MoSi2-SiC复合材料在500℃的氧化行为.经1000 h氧化的结果表明: 复合材料的氧化抗力明显好于单一MoSi2,原位合成复合材料的氧化抗力好于传统的热压商用MoSi2粉末和SiC粉末混合物制备的复合材料(外加复合材料),复合材料氧化1000 h后未发生pest现象. 其氧化动力学曲线分为:孕育期、快速氧化期和稳态氧化3个阶段. 氧化膜的相组成为MoO3,非晶SiO2β-SiC, 材料的氧化过程主要是O2与MoSi2的作用,SiC未发生氧化. 氧化5, 10和20 h后样品表面形貌观察结果表明:材料的氧化优先在相界处发生, 初生氧化物以无定形态存在; 随着氧化的进行,逐渐形成MoO3晶须和非晶SiO2为主的团絮状氧化物;MoO3晶须优先在表面凸凹不平处形核并长大.

关键词 原位合成MoSi2-SiC复合材料低温氧化行为pest现象    
Abstract

The oxidation behavior for in situ synthesized MoSi2-SiC composites with different SiC volume fraction at 500℃ was investigated. The results of oxidation for 1000 h indicate that the oxidation resistance for composites is significantly higher than that of monolithic MoSi2, MoSi2-30%SiC composite in situ synthesized possesses higher oxidation resistance compared with the traditional composite which is fabricated by hot-pressing the mixture of commercial powders of MoSi2 and SiC. After oxidation for 1000 h, the composites have not been observed to disintegrate (pest). The oxidation kinetics curves are divided into three stages: incubation period, rapid oxidation period and the steady-state. The oxide scale consists of MoO3, amorphous silica and β-SiC, therefore, the oxidation of the materials is mainly done between MoSi2 and O2, and SiC is not oxidized. The surface morphology observations of samples oxidized for 5, 10 and 20 h show that the phase boundary is the preferential oxidation site, the oxides formed at the initial stage of oxidation are irregular-shaped, and MoO3 whisker and oxide cluster mainly composed of amorphous SiO2 come gradually into being along with the development of oxidization. It is also found that the nucleation and growth of MoO3 whisker preferentially take place at the concave and convex sites of substrate surfaces.

Key wordsin situ synthesized    MoSi2-SiC composite    oxidation behavior    pest
收稿日期: 2013-08-29     
基金资助:

国家自然科学基金项目50871012和国家重点基础研究发展计划

作者简介: 张来启, 男, 1966年生, 教授, 博士

[1] Fitzer E. In: Benesovsky F ed.,  Proc 2nd Plansee Semin, Vienna: Springer, 1955: 56

[2] Chou T C, Nieh T G.  Scr Metall, 1992; 26: 1637
[3] McKamey C G, Tortorelli P F, DeVan J H, Carmichael C A.  J Mater Res, 1992; 10: 2747
[4] Westbrook J H, Wood D L.  J Nucl Mater, 1964; 2: 208
[5] Chen J X, Li C H, Fu Z, Tu X, Sundberg M, Pompe R.  Mater Sci Eng, 1999; A261: 239
[6] Sun Z Q, Zhang L Q, Yang W Y, Zhang Y, Fu X W.  Chin Pat,  ZL01141978.4, 2005
(孙祖庆, 张来启, 杨王玥,张跃, 傅晓伟. 中国专利, ZL01141978.4, 2005)
[7] Zhang L Q, Sun Z Q, Zhang Y, Yang W Y, Chen G N.  Acta Metall Sin, 2001; 37: 325
(张来启, 孙祖庆, 张跃, 杨王玥,陈光南. 金属学报, 2001; 37: 325)
[8] Fu X W, Yang W Y, Zhang L Q, Sun Z Q, Zhu J.  Acta Metall Sin, 2002; 38: 731
(傅晓伟, 杨王玥,张来启, 孙祖庆, 朱静. 金属学报, 2002; 38: 731)
[9] Me H H, Translated by Xu K D, Wang Q.  Molybdenum Alloy.Beijing: Metallurgical Industry Press, 1984: 162
(莫尔古诺娃H H~著, 徐克玷, 王勤 译. 钼合金. 北京: 冶金工业出版社, 1984: 162)
[10] Lely J A.  SiC Semi-Conductor at High Temperature.Shanghai: Shanghai Scientific and~Technological Literature Publishing House, 1962: 138
(列米 J A. 碳化硅高温半导体. 上海: 上海科学技术出版社, 1962: 138)
[11] Chou T C, Nieh T G.  Scr Metall, 1992; 27: 19
[12] Meschter P J.  Metall Trans, 1992; 23A: 1763
[13] Hansson K, Halvarsson M, Tang J E, Sundberg M, Svensson J E.  J Eur Ceram Soc, 2004; 24: 3559
[14] Maruyama T, Yanagihara K.  Mater Sci Eng, 1997; A239-240: 828
[15] Kuchino J, Kurokawa K, Shibayama T, Takahashi H.  Vacuum, 2004; 73: 623
[16] Parthasarathy T A, Mendiratta M G, Dimiduck D M.  Acta Mater, 2002; 50: 1857
[17] Li W.  Inorganic Whisker. Beijing: Chemical Industry Press, 2005: 87
(李武. 无机晶须. 北京: 化学工业出版社, 2005: 87)
[18] Zhu R Z, He Y D, Qi H B.  Corrosion and Corrosion-Resistant Materials at High Temperature.Shanghai: Shanghai Scientific and Technological Literature Publishing House, 1995: 112
(朱日彰, 何业东, 齐慧滨. 高温腐蚀及耐高温腐蚀材料. 上海: 上海科学技术出版社, 1995: 112)
[19] Feng P Z, Qu X H, Du X L, Cui D W, Tao S W, Tian J J.  Powder Metall Technol, 2006; 24(1): 64
(冯培忠, 曲选辉, 杜学丽, 崔大伟, 陶斯武, 田建军. 粉末冶金技术, 2006; 24(1): 64)
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