采用电化学方法、扫描电镜、电子探针等技术,研究了室温下新型Co-Al-W合金在不同pH值NaCl溶液中的腐蚀行为.结果表明,在不同pH值的NaCl的溶液中,不同成分合金均会遭受严重的点腐蚀,点蚀多发生在晶界处.点蚀发生是由于Cl-从溶液中迁移至蚀孔所致.钨含量的增加可以提高合金的耐点腐蚀能力,Co-81.8Al-9.8W的耐点腐蚀能力最好.在中性NaCl溶液中,相对于钴基Stellite 6合金,新型Co-Al-W合金的耐腐蚀能力较弱.
参考文献
| [1] | 马敬翙,刘光明,曾潮流,杜楠,赵晴.镍基高温合金M17和M38G的电化学腐蚀行为研究[J].表面技术,2006(04):15-17,33. |
| [2] | Akane Suzuki;Tresa M. Pollock .High-temperature strength and deformation of gamma/gamma' two-phase Co-Al-W-base alloys[J].Acta Materialia,2008(6):1288-1297. |
| [3] | Sato J;Omori T;Oikawa K;Ohnuma I;Kainuma R;Ishida K .Cobalt-base high-temperature alloys.[J].Science,2006(5770):90-91. |
| [4] | Akane Suzuki;Garret C. DeDolf;Tresa M. Pollock .Flow stress anomalies in gamma/gamma' two-phase Co-Al-W-base alloys[J].Scripta materialia,2007(5):385-388. |
| [5] | W.Y. Guo;J. Sun;J.S. Wu .Effect of deformation on corrosion behavior of Ti-23Nb-0.7Ta-2Zr-O alloy[J].Materials Characterization,2009(3):173-177. |
| [6] | Joachim Walter Schultze;Arnd Bressel .Principles of electrochemical micro- and nano-system technologies[J].Electrochimica Acta,2001(1/2):3-21. |
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