EFFECT OF LASER POWER ON MICROSTRUCTURES ANDWEAR PROPERTIES OF WCP/Ni METAL CERAMICS COATING

J Chin Soc Corr Pro

2004, Vol. 24

Issue (3): 183-187 DOI:

Research Report

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EFFECT OF LASER POWER ON MICROSTRUCTURES ANDWEAR PROPERTIES OF WCP/Ni METAL CERAMICS COATING

Songhua Si

安徽工业大学冶金与材料学院

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Abstract Effect of different laser powers on microstructures and wear properties of laser cladding WCP/Ni etal ceramics coating was studied in this paper.The WCP/Ni alloy coating with the even-distributed WC ceramics phases and the better bond with the substrate alloy was obtained by choosing 2.2 kW power.Diffusion reaction solution happened between the WC particles and the substrate alloy during laser cladding,giving rise to the formation of block rich-tungsten carbide on the edges of the WC particles,especially in higher power.The WCP/Ni alloy coating consisted of the undissolved WC particles,the block or dendritic rich-tungsten carbide,the bar-like rich-chromium carbide.and dendrit e solid solution and eutectic structure among them.Microhardness and wear resistance of the WCP/Ni coating in different powers were much higher or better than Ni60 alloy coating,and were best in 2.2 kW power.

Key words: laser power metal ceramics coating microstructure wear

Received: 24 November 2003

ZTFLH:

TG156.99

Corresponding Authors: Songhua Si

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Songhua Si. EFFECT OF LASER POWER ON MICROSTRUCTURES ANDWEAR PROPERTIES OF WCP/Ni METAL CERAMICS COATING. J Chin Soc Corr Pro, 2004, 24(3): 183-187 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2004/V24/I3/183

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