| 镍基WC金属陶瓷激光熔覆涂层的熔化烧损规律 |
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| 引用本文： | 吴新伟,曾晓雁,朱蓓蒂,陶曾毅,崔崑.镍基WC金属陶瓷激光熔覆涂层的熔化烧损规律[J].金属学报,1997,33(12):1282-1288. |
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| 作者姓名： | 吴新伟 曾晓雁 朱蓓蒂 陶曾毅 崔崑 |
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| 作者单位： | 华中理工大学材料系!武汉，430074，华中理工大学!武汉，430074，华中理工大学!武汉，430074，华中理工大学!武汉，430074，华中理工大学!武汉，430074 |
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| 基金项目： | 武汉市晨光科技基金，华中理工大学国家模具重点实验室基金，中关村地区联合测试基金 |
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| 摘 要： | 采用ＣＯ２激光器在Ａ３钢上进行镍基碳化钨金属陶瓷的激光熔覆试验，研究了不同复合粉末成分及激光熔覆工艺条件下熔覆层中碳化钨的熔化烧损规律。试验结果表明，熔覆层中碳化钨的烧损主要是反应扩散式烧损。其烧损程度由其与粘结金属间的化学反映程度控制，与复合粉中钨种类，粒度，含量，粘结金属中碳含量以及激光熔覆工艺关系密切。
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| 关 键 词： | 激光熔覆 金属陶瓷 烧损 镍基 碳化钨 |
HEAT DAMAGE OF LASER CLAD Ni-BASED WC COATING |
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| WU Xinwei,ZENG Xiaoyan,ZHU Beidi,TAO Zengyi,CUI Kun.HEAT DAMAGE OF LASER CLAD Ni-BASED WC COATING[J].Acta Metallurgica Sinica,1997,33(12):1282-1288. |
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| Authors: | WU Xinwei ZENG Xiaoyan ZHU Beidi TAO Zengyi CUI Kun |
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| Affiliation: | WU Xinwei,ZENG Xiaoyan,ZHU Beidi,TAO Zengyi,CUI Kun (Huazhong University of Science and Technology,Wuhan ) |
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| Abstract: | A 2 kW CO2 laser has been used to deposit Ni based WC alloy onto steel A3 substrate. The effects of ceramic-metal ingredient and laser processing conditions on the heat damage of coatings are studied. Results show that the heat damage level of WC particles in ceramic-metal composite coatings is mainly determinated by the chemical reaction between WC and binder. Further research shows that the mass fractions of carbon in binder, the kind,size and content of WC particles and the laser processing condition all directly affect the heat damage level of composite coatings. |
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| Keywords: | cladding ceramic-metal heat damage |
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