纳米ZrO2/SiC-WSi2/MoSi2复相陶瓷的显微结构与耐磨性
Microstructure and Wear Resistance of ZrO2/SiC-WSi2/MoSi2 Ceramic Nanocomposites
摘 要
将纳米ZrO2和SiC颗粒与微米WSi2/MoSi2颗粒进行球磨分散、混合,通过热压烧结制备ZrO2/SiC-WSi2/MoSi2复相陶瓷,研究了它的显微结构与耐磨性并与MoSi2材料进行了对比.结果表明:SiC、ZrO2纳米颗粒的复合化以及钨的合金化能使复相陶瓷晶粒细化,复相陶瓷的硬度较MoSi2陶瓷明显提高,耐磨性优于MoSi2陶瓷,磨损机制主要为粘着磨损兼有疲劳微断裂.
显微结构
耐磨性
ceramic composite
microstructure
wear resistance
Abstract
ZrO2/SiC-WSi2/MoSi2 ceramic composites were prepared by hot-pressed sintering after ZrO2 and SiC nanoparticles were dispersed and mixed by wet-milling.The microstructure and wear resistance of the composites were investigated.The compositing of SiC and ZrO2 nanoparticles and alloying of W induced the grain of ceramic composites fined.The hardness and wear resistance of ceramic composites are much higher than those of MoSi2 ceramic.The wear mechanism is mainly adhesive wear accompanied with microfracture induced by fatigue.
中图分类号 TG146.1
所属栏目
基金项目 航空基础科学基金资助项目(04G56008)
收稿日期 2005/12/20
修改稿日期 2006/4/28
网络出版日期
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备注艾云龙(1962-),男,湖南临湘人,博士研究生.
引用该论文: AI Yun-long,WANG Min,ZUO Dun-wen. Microstructure and Wear Resistance of ZrO2/SiC-WSi2/MoSi2 Ceramic Nanocomposites[J]. Materials for mechancial engineering, 2006, 30(12): 48～50
艾云龙,王珉,左敦稳. 纳米ZrO2/SiC-WSi2/MoSi2复相陶瓷的显微结构与耐磨性[J]. 机械工程材料, 2006, 30(12): 48～50
被引情况:
【1】侯周福,许剑光,唐果宁, "无压烧结原位合成制备WSi2/MoSi2复合材料及其性能",机械工程材料 34, 71-74(2010)
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参考文献
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