| 引用本文: | 王景贺,王洪祥,余兵涛.0Cr13Ni5Mo不锈钢电火花强化表面耐腐蚀性能研究[J].材料科学与工艺,2014,22(2):1-5.DOI:10.11951/j.issn.1005-0299.20140201. |
| WANG Jinghe,WANG Hongxiang,YU Bingtao.Research on corrosion resistance of electro-spark surface strengthening layer for stainless steel 0Cr13Ni5Mo[J].Materials Science and Technology,2014,22(2):1-5.DOI:10.11951/j.issn.1005-0299.20140201. |
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| 摘要: |
| 针对我国水轮机过流部件长时间运行后表面腐蚀严重这一问题,选用YG8电极材料对水轮机叶片用0Cr13Ni5Mo不锈钢进行电火花表面强化处理,基于电化学测试技术和交流阻抗测试方法,对强化层的电化学腐蚀性能进行了深入研究.结果表明,强化过程中电极材料与基体材料元素相互熔渗和扩散,强化层内有新的相结构生成,且强化层为冶金结合.与基体材料相比,在腐蚀溶液中电火花强化后试件的自腐蚀电位增大,自腐蚀电流密度减小,试件腐蚀速度变慢,耐腐蚀性能明显提高. |
| 关键词: 电火花表面强化 YG8强化层 电化学腐蚀 硬度 摩擦磨损性能 |
| DOI：10.11951/j.issn.1005-0299.20140201 |
| 分类号:TH161+.1 |
| 基金项目:国家自然科学基金委员会与中国工程物理研究院联合基金资助项目(U1230110). |
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| Research on corrosion resistance of electro-spark surface strengthening layer for stainless steel 0Cr13Ni5Mo |
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WANG Jinghe, WANG Hongxiang, YU Bingtao
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(School of Mechanical Electrical Engineering, Harbin Institute of Technology, Harbin 150001,China)
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| Abstract: |
| For the abrasion phenomenon of the turbine flowing-passage components was very serious, the electrospark surface strengthening process of stainless steel 0Cr13Ni5Mo by YG8 electrode was carried out in this paper. Based on the electrochemical measurement technique and the electrochemical impedance spectroscopy test method, the electrochemical corrosion properties of strengthening layer is studied. The results show that in the process of strengthening, the electrode materials and substrate material mutual infiltration and melting element diffusion, new phase structure are formed in the strengthening layer, and the strengthening layer is metallurgical combination. In the corroding liquor, the corrosion potential of the strengthening layer increases, the corrosion current density decreases, the corrosion speed slows down, and the corrosion resistance performance of strengthening layer are improved. |
| Key words: electrospark surface strengthening YG8 strengthening layer electrochemical corrosion hardness friction and wear properties |
