HEAT DAMAGE OF LASER CLAD Ni-BASED WC COATING

Acta Metall Sin

1997, Vol. 33

Issue (12): 1282-1288 DOI:

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HEAT DAMAGE OF LASER CLAD Ni-BASED WC COATING

WU Xinwei; ZENG Xiaoyan; ZHU Beidi; TAO Zengyi; CUI Kun (Huazhong University of Science and Technology; Wuhan 430074)

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WU Xinwei; ZENG Xiaoyan; ZHU Beidi; TAO Zengyi; CUI Kun (Huazhong University of Science and Technology; Wuhan 430074). HEAT DAMAGE OF LASER CLAD Ni-BASED WC COATING. Acta Metall Sin, 1997, 33(12): 1282-1288.

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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.

Key words: cladding ceramic-metal heat damage

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1997/V33/I12/1282

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