中国激光, 2002, 29 (8): 759, 网络出版: 2006-08-08   

激光熔覆镍基金属陶瓷涂层的组织性能研究

Microstructures and Properties of Laser Clad Ni-based Metal-ceramics Layers
作者单位
1 安徽工业大学激光加工研究中心,安徽马鞍山,243002
2 Department of Materials Science and Engineering,The Changwon National University, 9 Sarim-dong, Changwon, 641-773, South Korea
3 Division of Engineering, Colorado School of Mine, Golden, CO 80401, USA
摘要
运用5 kW CO2连续激光器在16Mn钢表面激光熔覆镍基B4C金属陶瓷层(NB4C)和镍基SiC金属陶瓷层(NSiC),研究了两种激光熔覆层的组织、结构、显微硬度及滑动磨损特性,并用激光熔覆镍基合金层(Ni60)进行了滑动磨损对比试验.结果表明,熔覆合金层显微组织由枝晶固溶体及其间细密的共晶组织组成,NB4C熔覆层主要组成相为γ-Ni,γ-(Ni,Fe),(Cr,Fe)7C3,CrB,Ni3B,Fe2B,Fe23(C,B)6和B4C等,NSiC熔覆层主要组成相为γ-Ni,γ-(Fe,Ni),(Cr,Fe)7C3,Cr23C6和(Cr,Si)3Ni3Si等.三种激光熔覆层的显微硬度及耐滑动磨损性能由高到低的顺序为:NB4C→NSiC→Ni60.
Abstract
Laser clad metal ceramics layers of Ni based B 4C(NB 4C) and Ni based SiC(NSiC) have been obtained on 16Mn steel substrate by means of 5 kW continuous wave CO 2 laser. Microstructure, phases, microhardness and sliding wear characteristics of the layers have been studied. Microhardness and sliding wear characteristics of laser clad Ni based alloy layer (Ni60) was also investigated under the same conditions as a contrast. The results show that the microstructure of laser clad layers consists of dendritic solid solution and the fine eutectic structure between the dendrites. NB 4C clad layer mainly consists of γ Ni,γ (Ni,Fe), (Cr,Fe) 7C 3, CrB, Ni 3B, Fe 2B, Fe 23 (C,B) 6 and B 4C. NSiC clad layer mainly consists of γ Ni,γ (Fe,Ni), (Cr,Fe) 7C 3, Cr 23 C 6 and (Cr,Si) 3Ni 3Si. Microhardness and sliding wear resistance of the three laser clad layers have an order from high to low: NB 4C→NSiC→Ni60.

斯松华, 袁晓敏, 何宜柱, Je-Hyun Lee, Mark T. Lusk. 激光熔覆镍基金属陶瓷涂层的组织性能研究[J]. 中国激光, 2002, 29(8): 759. 斯松华, 袁晓敏, 何宜柱, Je-Hyun Lee, Mark T. Lusk. Microstructures and Properties of Laser Clad Ni-based Metal-ceramics Layers[J]. Chinese Journal of Lasers, 2002, 29(8): 759.

本文已被 11 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!