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材料研究学报  2010, Vol. 24 Issue (3): 232-238    
  研究论文 本期目录 | 过刊浏览 |
添加Mg、Y氧化物对Fe--Mo/Si3N4金属陶瓷微观组织与性能的影响
银锐明1, 范景莲2, 刘勋1, 张曙光1
1.中南大学粉末冶金国家重点实验室 长沙 410083
2.湖南工业大学包装与材料工程学院 株洲 412008
Effect of Mg-Y Oxides on the Microstructure and Properties of Fe--Mo/Si3N4 Cermet
YIN Ruiming 1,  FAN Jinglian 2,  LIU Xun 1,  ZHANG Shuguang1
1.State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083
2.College of Packaging and Material Engineering, Hunan University of Technology, Zhuzhou 412008
引用本文:

银锐明 范景莲 刘勋 张曙光. 添加Mg、Y氧化物对Fe--Mo/Si3N4金属陶瓷微观组织与性能的影响[J]. 材料研究学报, 2010, 24(3): 232-238.
, , , . Effect of Mg-Y Oxides on the Microstructure and Properties of Fe--Mo/Si3N4 Cermet[J]. Chin J Mater Res, 2010, 24(3): 232-238.

全文: PDF(1298 KB)  
摘要: 

提出在Fe--Mo/Si3N4金属陶瓷中添加Mg、Y氧化物, 在常压烧结条件下实现金属复合、晶须技术双重强韧化陶瓷, 并研究了Mg、Y氧化物对Fe-Mo/ Si3N4金属陶瓷的微观组织与性能的影响。结果表明: 添加Mg、Y氧化物的Fe-Mo/ Si3N4金属陶瓷, 存在与Si3N4润湿性极好的金属Fe与MoSi2相, 颗粒状α--Si3N4转变成晶须条状β--Si3N4, 烧结体致密且晶粒得到明显细化, 各项性能得到大幅提升, 实现了金属复合、晶须技术双重强韧化Si3N4陶瓷。

关键词 常压烧结金属陶瓷Mg、Y氧化物微观组织结构    
Abstract

The paper proposes a dual-toughening method of ceramic, including metal composite and crystal whiskers strengthening, through adding Mg-Y oxides into Fe-Mo/Si3N4 cermet and subsequently consolidated by normal pressure sintering. The effects of Mg-Y oxides on the microstructure and properties of the Fe-Mo/Si3N4 cermet have been investigated. The results show that Fe and MoSi2 phases with good wettability on Si3N4 are formed in the Fe-Mo/Si3N4 cermet with Mg-Y oxides addition. Additionally, granular α-Si3N4 converts into whisker-shaped β-Si3N4, simultaneously with obvious densification, grain refinement and significantly improved properties, indicating that the dual-toughening method of the metal composite and the crystal whiskers have been realized.

Key wordsnormal pressure sintering    ceramic    Mg-Y oxides    microstructure
收稿日期: 2009-10-29     
ZTFLH: 

O648

 
基金资助:

国家自然科学青年基金50804016和国家杰出青年科学基金50925416资助项目。

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