王立生,林涛,侯婷,邵慧萍,郭志猛.热浸镀镍基合金涂层组织及腐蚀行为[J].表面技术,2010,39(5):19-21,25.
WANG Li-sheng,LIN Tao,HOU Ting,SHAO Hui-ping,GUO Zhi-meng.Microstructure and Corrosion Behavior of Hot Dipping Ni-based Alloy Coating[J].Surface Technology,2010,39(5):19-21,25 |
| 热浸镀镍基合金涂层组织及腐蚀行为 |
| Microstructure and Corrosion Behavior of Hot Dipping Ni-based Alloy Coating |
| 投稿时间：2010-07-13 修订日期：2010-10-10 |
| DOI： |
| 中文关键词: 热浸镀 镍基合金涂层 组织 耐蚀性 腐蚀机理 |
| 英文关键词:hot dipping Ni-based alloy coating structure corrosion resistance corrosion mechanism |
| 基金项目:水利部948项目(201048) |
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| Author | Institution |
| WANG Li-sheng | University of Science and Technology Beijing, Beijing 100083, China |
| LIN Tao | University of Science and Technology Beijing, Beijing 100083, China |
| HOU Ting | University of Science and Technology Beijing, Beijing 100083, China |
| SHAO Hui-ping | University of Science and Technology Beijing, Beijing 100083, China |
| GUO Zhi-meng | University of Science and Technology Beijing, Beijing 100083, China |
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| 中文摘要: |
| 采用热浸镀技术在Q235钢表面制备了镍基合金涂层,采用XRD和SEM-EDS研究了涂层腐蚀前后的相组成、形貌和成分,并探讨了腐蚀机理。结果表明:涂层中有多种形态的析出物,涂层与基体之间存在宽5～ 8μm的过渡带;盐雾试验后,涂层表面腐蚀产物为Ni(OH)2,Fe3O4和Fe+ 3O(OH),平均腐蚀速率大约为1.18× 10- 7 g/(h·mm2);腐蚀首先发生在显微孔洞或析出相边界处,表现为局部腐蚀特征。 |
| 英文摘要: |
| Ni-based alloy coating was prepared by hot dipping on Q235 steel.Before and after corrosion, the phases and the microstructures of the coating were investigated by XRD and SEM-EDS, respectively, and the mechanism of corrosion of the coating was discussed. The results show that there are many forms of the precipitates in the coating. The width of transition zone is 5～ 8μm. The corrosion products of the coating are Ni(OH)2,Fe3O4and Fe+ 3O(OH). And the average corrosion rate of hot dipped Ni-based alloy is about 1.18× 10- 7 g/(h·mm2). Due to the different corrosion potentials of the alloy elements and the non-homogeneous structures, the corrosion is characterized of local corrosion, which first occurres around pores and the borders of precipitates. |
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