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| 粉末相组成对(C,N)-(Co,Ni)金属陶瓷组织及性能的影响 | |
| 引用本文： | 徐智谋,易新建,郑家燊,熊维皓,唐宏翚,李祥辉,向阳开.粉末相组成对(C,N)-(Co,Ni)金属陶瓷组织及性能的影响[J].复合材料学报,2003,20(4):39-45. |
| 作者姓名： | 徐智谋 易新建 郑家燊 熊维皓 唐宏翚 李祥辉 向阳开 |
| 作者单位： | 1. 华中科技大学,光电子工程系,武汉,430074 2. 华中科技大学,化学系,武汉,430074 3. 华中科技大学,材料科学与工程学院,武汉,430074 4. 株洲硬质合金集团有限公司,株州,412000 |
| 基金项目： | 中国博士后科学基金，国家自然科学基金项目(50074017)，教育部博士点基金项目(1999048714)，湖北省重点科技发展项目(992P0322)。 |
| 摘 要： | 采用自制的多元复式碳(氮)化物陶瓷粉末制备少Mo的(Ti,W,Ta,Mo)(C,N)-(Co,Ni)金属陶瓷。研究了粉末相组成对金属陶瓷组织及性能的影响。结果表明,多元复式碳(氮)化物固溶体的晶格常数与元素的固溶度有很好的对应关系。金属陶瓷中含Ta,W等重金属元素的多元复式碳化物的加入,有利于重金属元素向粘结相中均匀扩散,相对减缓了低元相Ti(C,N)的分解,使材料的性能得到较大的提高,组织主要表现为单层环形相结构特征,富Ti硬质相减少,富(Ta,W)硬质相增多,且晶粒细小,无团聚现象。 |
| 关 键 词： | 粉末相组成 金属陶瓷 组织 性能 |
| 文章编号： | 1000-3851(2003)04-0039-07 |
| 收稿时间： | 2001-12-27 |
| 修稿时间： | 2001年12月27 |
EFFECTS OF PHASE COMPOSITION OF POWDERS ON THE MICROSTRUCTURE AND PROPERTIES OF (Ti,W,Ta,Mo)(C,N)-(Co,Ni) CERMETS INCLUDING LESS AMOUNT OF Mo |
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| XU Zhimou,YI Xinjian,ZHEN Jiashen,XIONG Weihao,TANG Honghui,LI Xianghui,XIANG Yangkai.EFFECTS OF PHASE COMPOSITION OF POWDERS ON THE MICROSTRUCTURE AND PROPERTIES OF (Ti,W,Ta,Mo)(C,N)-(Co,Ni) CERMETS INCLUDING LESS AMOUNT OF Mo[J].Acta Materiae Compositae Sinica,2003,20(4):39-45. | |
| Authors: | XU Zhimou YI Xinjian ZHEN Jiashen XIONG Weihao TANG Honghui LI Xianghui XIANG Yangkai |
| Affiliation: | 1. Department of Optoelectronics Engineering, Huazhong University of Science and Technology, Wuhan 430074,China; 2. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074,China; 3. Institute of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074,China; 4. Zhuzhou Cemented Carbide Works, Zhuzhou 412000,China |
| Abstract: | (Ti,W,Ta,Mo)(C,N)-(Co,Ni) cermets of less amount of Mo were produced using the self-made pre-alloyed solid solution powders of carbides or/and nitrides. Effects of phase composition of powders on the microstructure and properties were studied. The results suggest that the good corresponding relationships between the lattice constant of the pre-alloyed solid solution powders and the solid solution extent of elements are obtained. The addition of the pre-alloyed solid solution powders including the heavy metal elements of Ta and W is favorable to the spreading of heavy metal elements in the binders. The dissolution of Ti(C,N) reduces. The performance of cerments is improved. The cermets have the monolayer core-rim structure. The content of hard grains of wealthy Ti reduces and the content of hard grains of wealthy Ta and W increases. The grains of cerments are fine. The features of aggregation are not observed. |
| Keywords: | phase composition of powders cermets microstructure properties |
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