Microstructure characteristics of FeMo-Sialon ceramic composite

被引：12
作者：
Yang, Jing-Zhou [1 ,2 ]
Huang, Zhao-Hui [1 ]
Hu, Xiao-Zhi [2 ]
Fang, Ming-Hao [1 ]
Liu, Yan-Gai [1 ]
Huang, Jun-Tong [1 ,3 ]
机构：
[1] China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
[2] Univ Western Australia, Sch Mech & Chem Engn, Perth, WA 6009, Australia
[3] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 4-5期
基金：
中国国家自然科学基金;
关键词：
Ceramics; Composites; Ferrous alloy; Electron microscopy; FeMo-Sialon; MECHANICAL-PROPERTIES; PARTICLES; MOLYBDENUM;
D O I：
10.1016/j.msea.2010.11.071
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A new metal-Sialon based ceramic composite of FeMo-Sialon has been processed using Si3N4, alpha-Al2O3 and FeMo70 alloy powders as the main raw materials. To explain why this composite has excellent mechanical properties, microstructure characterizations are carried out using the transmission electron microscopy (TEM) and selected area electron diffraction (SAED). The results show that FeMo, FeSi2 and Mo have formed an alloy mixture of Mo-Fe-Si in the FeMo-Sialon ceramic composite. Elongated beta-Sialon crystals, interlacing with each other, vary in size. The Y-SiAION glass, as an inter-granular phase, surrounds the grain boundaries of beta-Sialon crystals. Some of beta-Sialon crystals are semi-surrounded by dumbbell-like Mo-Fe-Si particles. The good mechanical properties of FeMo-Sialon composite are greatly dependent on the elongated Sialon grains and Mo-Fe-Si particles with interlocking structures. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：2196 / 2199
页数：4
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