| 铸铁表面负压铸渗法Ni/WC复合渗层组织和性能 |
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| 引用本文： | 王海棠,李元东,杨贵荣,刘生龙,郝远. 铸铁表面负压铸渗法Ni/WC复合渗层组织和性能[J]. 表面技术, 2008, 37(5): 10-12 |
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| 作者姓名： | 王海棠 李元东 杨贵荣 刘生龙 郝远 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃,兰州,730050;兰州理工大学有色金属合金省部共建教育部重点实验室,甘肃,兰州,730050;酒钢机械制造公司,甘肃,嘉峪关,735100 |
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| 基金项目： | 甘肃省中俄同际合作项目 |
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| 摘 要： | 以制备表面质量良好,硬度较高的铸铁材料为目的,采用负压铸渗法在铸铁表面制备了不同WC含量的Ni基复合渗层,用扫描电镜(SEM)、X射线衍射(XRD)和电子探针(EPMA)等测试手段,分析了渗层的显微结构、相组成、化学成分分布、宏观、显微硬度等.结果表明:渗层中WC颗粒分布均匀,渗层组织致密,界面结合良好;渗层主要由Ni基固溶体、W2C颗粒、NiB和FeB等相组成;显著地提高铸铁表面的硬度.最终在铸铁表面获得了硬度、质量较高的复合渗层,达到制备目的,满足使用要求.
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| 关 键 词： | 复合渗层 负压铸渗 组织 铸铁 碳化钨 |
| 收稿时间： | 2008-06-20 |
| 修稿时间： | 2008-10-10 |
Microstructure and Properties of Ni/WC Composite Infiltrated Layer on Cast Iron Surface |
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| WANG Hai-tang,LI Yuan-dong,YANG Gui-rong,LIU Sheng-long and HAO Yuan. Microstructure and Properties of Ni/WC Composite Infiltrated Layer on Cast Iron Surface[J]. Surface Technology, 2008, 37(5): 10-12 |
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| Authors: | WANG Hai-tang LI Yuan-dong YANG Gui-rong LIU Sheng-long HAO Yuan |
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| Affiliation: | 1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2. Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China,1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2. Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China,1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2. Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China,Jiugang Mechanical Manufacturing Corporation, Jiayuguan 735100, China and 1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2. Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | In order to obtain the surface of cast iron with higher hardness, better property, lower price, Ni-based surface infiltrated composite layer with different content of WC was fabricated on cast iron substrate through vacuum infiltration casting technology. The microstructure, phase, distribution of elements, macro-hardness and micro-hardness were investigated by SEM, XRD, EPMA and other methods. The results show that the distribution of WC in the layer is uniform. the structure of layer is densification, the interface combines very well. The layer is composed of Ni-based solid solution, W2C, NiB and FeB, which can enhance the hardness of layer notable. Finally the obtained layer with good metallurgic property and better hardness on cast iron, which achieves the goal of made and meet the demand of application. |
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| Keywords: | Composite infiltrated layer Vacuum infiltration casting technology Structure Cast iron Tungsten carbide |
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