影响激光感应复合快速熔覆碳化钨金属陶瓷层的因素分析

周圣丰; 曾晓雁

doi:doi:10.3788/cjl20103705.1380

中国激光, 2010, 37 (5): 1380, 网络出版: 2010-05-11

影响激光感应复合快速熔覆碳化钨金属陶瓷层的因素分析

Analysis of Related Factors to Affect WC Ceramic-Metal Composite Coatings Prepared by Laser Induction Hybrid Rapid Cladding

论文大纲

周圣丰 ^1,*曾晓雁 ²

作者单位

¹ 南昌航空大学材料科学与工程学院,江西南昌 330063

² 华中科技大学光电子科学与工程学院武汉光电国家实验室,湖北武汉 430074

摘要

研究了激光感应复合快速熔覆(LIHRC)碳化钨金属陶瓷层的影响因素。结果表明,随着感应预热温度的增加,激光感应复合快速熔覆的效率增加;基材类型对激光感应复合快速熔覆的效率也有较大影响,这主要是由基材的热物理性能参数(如熔点、电阻率与磁导率)决定;随着激光比能与基材感应预热温度的增加,复合层的稀释率增加;随着粉末面密度的增加,复合层的稀释率降低。此外,在激光感应复合快速熔覆过程中,复合粉末的利用率不仅与激光工艺参数、感应预热温度有关,还与WC颗粒的含量以及粘结金属的种类有关。

Abstract

The related factors to affect WC ceramic-metal composite coatings prepared by laser induction hybrid rapid cladding (LIHRC) are investigated. The results show that,with the preheated temperature of substrate increasing,the efficiency of LIHRC increases. The substrate types also have a significant effect on the efficiency of LIHRC,which is determined by the thermophysical properties (i.e. melting point,resistivity and permeability). With the laser specific energy and the preheated temperature of substrate increasing,the dilution of the composite coating increases,while the dilution decreases with the increase in the powder density per area. Moreover,the efficiency of the composite powder not only depends on the laser processing parameters and the preheated temperature of substrate,but also relates to the weight percent of WC particle and the types of the bonding metal during LIHRC.

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周圣丰, 曾晓雁. 影响激光感应复合快速熔覆碳化钨金属陶瓷层的因素分析[J]. 中国激光, 2010, 37(5): 1380. Zhou Shengfeng, Zeng Xiaoyan. Analysis of Related Factors to Affect WC Ceramic-Metal Composite Coatings Prepared by Laser Induction Hybrid Rapid Cladding[J]. Chinese Journal of Lasers, 2010, 37(5): 1380.

影响激光感应复合快速熔覆碳化钨金属陶瓷层的因素分析

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