采用一种新型的钴基合金作为耐空泡腐蚀涂层,进行MIG(熔化极氩弧焊)表面堆焊.根据ASTM G32/92标准进行空泡腐蚀试验.用XRD法和SEM对空泡腐蚀前后合金表面进行相分析和形貌观察.结果表明:空泡腐蚀先后促进了合金相变和马氏体片层的扭曲断裂.而相变和马氏体片层的扭曲断裂正是吸收空泡冲击能的两大途径.最终马氏体片层断裂产生的碎片被大量剥落,此时该材料的空泡腐蚀潜伏期结束.
参考文献
| [1] | Cheng F T;Lo K H;Man H C .Surface coating technology[J].WEAR,2003,172:308-315. |
| [2] | Paul Crook.Cobalt and cobalt alloys[M].ASM handbook,1992:446-454. |
| [3] | Richman R H.Cavitation-erosion behavior with mechanical properties of metal[J].WEAR,1990(140):63-82. |
| [4] | Okada sunenori et al.Relation between impact lord and the damage produced by cavitation bubble collapse[J].Wear,1995,184:231-239. |
| [5] | Murugan N;Parmar R S.Stainless steel caldding deposited by automatic gas metal arc welding[J].Welding Research Supplement,1997(11):391-403. |
| [6] | Annual Book of ASTEM Standards[S].,2002. |
| [7] | Z. Xiaojun;L. A. J. Procopiak;N. C. Souza .Phase transformation during cavitation erosion of a Co stainless steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):199-204. |
| [8] | John Price Hirth;Jens Lothe.Theory of dislocation[M].New York:John Wiley and Sons,Inc,1982:306-353. |
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