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Ni–Co duplex coating has been successfully cladded on copper substrate by continuous wave CO 2 laser. The average microhardness of cladded coating was 635 HV 0.05 , which was about 7 times of Cu substrate (92 HV 0.05 ). During sliding wear tests, the volume loss of copper substrate was about 7 times of Ni–Co duplex coating at 60min. The high microhardness and crack free advantages...
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