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Effects of tungsten and laser re-melting on the properties of Hastelloy C22 coating
Wang, Qin-Ying ; Bai, Shu-Lin ; Liu, Zong-De
2013
英文摘要Hastelloy C22 coatings with (H1) and without tungsten (H2, H3) were prepared on Q235 steel substrate by laser cladding. Coating H3 was also re-melted by the same laser process. The effects of tungsten and laser re-melting process on coating properties were studied in terms of the microstructures, mechanical properties and corrosion resistance. The results show that coating H1 exhibits higher micro-hardness and better corrosion resistance than that of coatings H2 and H3. It is mainly ascribed to the solution strengthening and stable chemical property of tungsten added in coating H1. Coating H3 after laser re-melting displays more compact micro structure than coating H2, which would be conducive to form dense oxide layer on the coating surface. Thus more positive corrosion potential of -0.415 V and lower corrosion current density of 1.149 ?? 10-6 A/cm2 of coating H3 indicate better corrosion resistance than coating H2.; EI; 0
语种英语
内容类型会议论文
源URL[http://ir.pku.edu.cn/handle/20.500.11897/316803]  
专题工学院
推荐引用方式
GB/T 7714
Wang, Qin-Ying,Bai, Shu-Lin,Liu, Zong-De. Effects of tungsten and laser re-melting on the properties of Hastelloy C22 coating[C]. 见:.
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