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Corrosion resistance of nanostructured WC-CoCr coating with Co-Cr alloy binder

机译:Co-Cr合金粘结剂的纳米结构WC-CoCr涂层的耐腐蚀性

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摘要

The nanostructured WC-CoCr coating was fabricated by the high velocity oxy-fuel (HVOF) thermal spraying using a new type of WC-CoCr powder, in which the Co-Cr exists in a form of metallic compound. The Co-Cr alloy powder was prepared by the induction melting and subsequent mechanical milling. Detailed characterizations were carried out on the phase constitution and microstructure of the Co-Cr powder and the cermet coating, as well as the mechanical properties and corrosion resistance of the coating. The results show that the nanostructured WC-CoCr coating has greatly improved corrosion resistance as compared with the conventional WC-Co-Cr coating where Cr exists as single metal.
机译:纳米结构的WC-CoCr涂层是通过使用新型的WC-CoCr粉末通过高速氧燃料(HVOF)热喷涂制备的,其中Co-Cr以金属化合物的形式存在。通过感应熔化和随后的机械研磨来制备Co-Cr合金粉末。对Co-Cr粉末和金属陶瓷涂层的相组成和微观结构,以及涂层的机械性能和耐腐蚀性进行了详细的表征。结果表明,与其中Cr以单金属存在的常规WC-Co-Cr涂层相比,纳米结构的WC-CoCr涂层具有大大提高的耐腐蚀性。

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