新型三元硼化物基金属陶瓷的研究

无机材料学报

新型三元硼化物基金属陶瓷的研究

王永国¹; 李兆前²; 张荻¹

1. 上海交通大学金属基复合材料国家重点实验室, 上海 200030; 2. 山东大学机械工程学院, 济南 250061

收稿日期:2002-10-10 修回日期:2002-11-08 出版日期:2003-11-20 网络出版日期:2003-11-20

Research on Ternary Boride Based Cermet

WANG Yong-Guo¹; LI Zhao-Qian²; ZHANG Di¹

1.State Key Laboratory of Metal Matrix Composites of Shanghai Jiaotong University; Shanghai 200030; China; 2.Mechanical Engineering Department of Shandong University; Jinan 250061; China

Received:2002-10-10 Revised:2002-11-08 Published:2003-11-20 Online:2003-11-20

摘要/Abstract

摘要： 用反应液相烧结法在1280℃下真空烧结成功制备出三元硼化物基金属陶瓷(TBBC),其硬度可达92.4HRA,密度为8.2g/cm³,热膨胀系数为8.0×10^-6/K.用扫描电镜、X射线衍射和能谱对其微观结构进行了分析,结果表明:此种金属陶瓷是由三元硼化物基硬质相(MoFeCrNi)₃B₂和铁基粘结相α-Fe组成,硬质相和铁基粘结相分散均匀,硬质相占有相当大的比重,约占体积比的80％.磨损实验表明此种金属陶瓷具有良好的耐磨性.

关键词: 三元硼化物, 金属陶瓷, 微观结构

Abstract: Ternary boride based cermet (TBBC) was produced successfully by using the reaction liquid sintering method under 1280℃ and vacuum. The hardness, density and coefficient of thermal expansion of TBBC are 92.4HRA, 8.2g/cm³ and 8.0×10^-6/K respectively. The microstructure of TBBC was studied by using SEM, XRD and EDS. Results show that the main composition of TBBC is ternary-boride-based hard phase and ferrous-base binder phase. TBBC has excellent wear resistance performance.

Key words: ternary boride, cermet, microstructure

中图分类号:

TQ174

王永国,李兆前,张荻. 新型三元硼化物基金属陶瓷的研究[J]. 无机材料学报.

WANG Yong-Guo,LI Zhao-Qian,ZHANG Di. Research on Ternary Boride Based Cermet[J]. Journal of Inorganic Materials.

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