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2007 , Vol. 22 >Issue 4: 690 - 694

DOI: https://doi.org/2007 DOI:10.3724/SP.J.1077.2007.00690

研究论文

反应熔渗法制备纳米 MoSi2-SiC复合材料

  • 张小立 ,
  • 金志浩 ,
  • 冯耀荣 ,
  • 赵文轸 ,
  • 吕振林 ,
  • 霍春勇
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  • 1. 中原工学院材料与化学工程系, 郑州 450007; 2. 西安交通大学材料科学与工程学院, 西安 710049; 3. 中国石油天然气集团公司管材研究所, 西安 710065; 4. 西安理工大学材料科学与工程学院, 西安 710048


收稿日期: 2006-08-17

  修回日期: 2006-10-10

  网络出版日期: 2007-07-20

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Preparation and Microstructure of Nano MoSi2-SiC Composite by Melt Infiltration Process

  • ZHANG Xiao-Li ,
  • JIN Zhi-Hao ,
  • FENG Yao-Rong ,
  • ZHAO Wen-Zhen ,
  • Lü Zhen-Lin ,
  • HUO Chun-Yong
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  • 1. Department of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China; 2. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China; 3. CNPC Research Institute of Tubular Goods, Xi'an 710065, China; 4. School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

Received date: 2006-08-17

  Revised date: 2006-10-10

  Online published: 2007-07-20

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摘要

运用Mo+C坯体反应溶渗法, 可以得到MoSi2-SiC复合材料, 其基体相晶粒尺寸为150～600nm, 反应生成的SiC相分布均匀, 大小为30～160nm之间. 该纳米MoSi2-SiC复合材料强度为214.8MPa, 断裂韧性为4.1MPa·m1/2, 力学性能远高于单相材料. 透射电镜研究表明, 在复合材料中存在大量的层错和一些位错, 也有孪晶存在.

关键词： MoSi2-SiC; 纳米复合材料; 力学性能; 反应熔渗法

本文引用格式

张小立 , 金志浩 , 冯耀荣 , 赵文轸 , 吕振林 , 霍春勇 . 反应熔渗法制备纳米 MoSi2-SiC复合材料[J]. 无机材料学报, 2007 , 22(4) : 690 -694 . DOI: 2007 DOI:10.3724/SP.J.1077.2007.00690

Abstract

MoSi2-SiC composite was successfully prepared by Si melt infiltration into Mo+C preforms. The crystal grain size of the resultant matrix is 150-600nm, and the size of SiC phase produced is 30-160nm which disperses homogeneously in the matrix. The strength of the composite is 214.8MPa, the toughness is 4.1MPa·m1/2, these mechanical properties are higher than that of single phase MoSi2. TEM results show lots of stacking faults, some dislocations, and twins existing in the composite.

Key words： MoSi2-SiC; nano-composite; mechanical property; melt infiltration

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