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首页> 外文期刊>Surface & Coatings Technology >Microstructure, oxidation resistance and mechanical properties of stellite 12 composite coating doped with submicron TiC/B4C by laser cladding
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Microstructure, oxidation resistance and mechanical properties of stellite 12 composite coating doped with submicron TiC/B4C by laser cladding

机译：用亚微米/ B4C掺杂亚微米/ B4C的甲状腺12复合涂层的微观结构，抗氧化性能和力学性能

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摘要

Stellite 12 and Ti/B4C composite coatings were successfully fabricated on the surface of 304 stainless steel substrates by laser cladding. The effect of Ti/B4C with different mass fractions on the structure and properties of Stellite 12 coating were studied. The properties and the growth mode of the coating were analyzed. The results show that the Stellite 12 coating was mainly composed of face-centered cubic gamma-Co and Cr7C3. With the addition of Ti/B4C, TiC submicron particle phase was synthesized in situ in the coatings. Residual B4C as a heterogeneous nucleus particle, forming a submicron microstructure TiC/B4C strengthening phase, and the particle size gradually decreases. The TiC/B4C particles can refine the grains of the coatings. The micro-hardness of the coating gradually increased with the increase of Ti/B4C, and the highest were 650 HV. The wear resistance and oxidation resistance of the coatings gradually increased with the increase of Ti/B4C.
机译：通过激光包层成功地制造在304不锈钢基板的表面上成功制造恒星12和Ti / B4C复合涂层。 研究了Ti / B4c对不同质量级分的影响，对脱衣带12涂层的结构和性质进行了研究。 分析了涂层的性质和生长模式。 结果表明，脱衣石12涂层主要由面向中心立方γ-CO和CR7C3组成。 随着Ti / B4C的添加，在涂层中原位合成TiC亚微米粒子相。 残留的B4c作为异质核颗粒，形成亚微米微结构TiC / B4C强化相，粒径逐渐减小。 TiC / B4C颗粒可以优化涂层的晶粒。 随着Ti / B4C的增加，涂层的微硬度随着Ti / B4C的增加而逐渐增加，最高为650 HV。 随着Ti / B4C的增加，涂层的耐磨性和抗氧化性逐渐增加。

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