Microstructure of Nano-Y203/Cobalt Based ,Alloy Composite Coating byLaser Cladding

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Composite coatings made of nano-Y203/cobalt-based alloy and produced by crosscurrent CO2 laser on Ni-based superalloy are introduced. Cross-section or surface of the coatings was examined to reveal their microstructure using optical microscope, SEM, inclu
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