赵丹,徐旭仲,刘亭亭.Ni-P/Ni-Zn-P双层复合镀层制备及耐蚀性的研究[J].表面技术,2017,46(4):240-245.
ZHAO Dan,XU Xu-zhong,LIU Ting-ting.Preparation and Corrosion Resistance of Bilayered Ni-P/Ni-Zn-P Composite Coating[J].Surface Technology,2017,46(4):240-245 |
| Ni-P/Ni-Zn-P双层复合镀层制备及耐蚀性的研究 |
| Preparation and Corrosion Resistance of Bilayered Ni-P/Ni-Zn-P Composite Coating |
| 投稿时间：2016-10-12 修订日期：2017-04-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.04.039 |
| 中文关键词: Ni-P/Ni-Zn-P双层复合镀层 Ni-Zn-P合金镀层 化学镀 耐蚀性 |
| 英文关键词:Ni-P/Ni-Zn-P bilayered coating Ni-Zn-P alloy coating chemical plating corrosion resistance |
| 基金项目:河北省科技厅科技计划项目（15211037）；华北理工大学研究生创新项目（2016S24） |
| 作者 | 单位 |
| 赵丹 | 华北理工大学 冶金与能源学院，河北 唐山 063009 |
| 徐旭仲 | 华北理工大学 冶金与能源学院，河北 唐山 063009 |
| 刘亭亭 | 华北理工大学 冶金与能源学院，河北 唐山 063009 |
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| Author | Institution |
| ZHAO Dan | School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, China |
| XU Xu-zhong | School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, China |
| LIU Ting-ting | School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, China |
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| 中文摘要: |
| 目的 提高金属材料在海洋环境下的耐蚀性。 方法 采用化学镀方法在Q235碳钢表面施镀Ni-Zn-P合金镀层和Ni-P/Ni-Zn-P双层复合镀层，采用扫描电镜（SEM）和能谱分析仪（EDS）对镀层表面形貌和断面成分进行了分析。结果 Ni-P/Ni-Zn-P双层复合镀层相对于Ni-Zn-P合金镀层胞状组织更加均匀平滑，胞与胞的边界结合更加连续致密。Ni-Zn-P合金镀层断面厚度为6.5 μm左右，锌和磷的质量分数分别约为4%和14%。Ni-P/Ni-Zn-P双层复合镀层断面总厚度约7.5 μm，内层镀层的厚度约2.3 μm，磷的质量分数约为9%；外层镀层厚度约5.2 μm，锌和磷的质量分数分别约为5%和11%。在5%NaCl溶液中腐蚀144 h后，Ni-Zn-P合金镀层遭到了严重的破坏，有许多裂纹，而Ni-P/Ni-Zn-P双层复合镀层仍然连续完整，没有严重的破损，只是局部腐蚀，这说明双层镀层更耐蚀。结论 Ni-P/Ni-Zn-P双层复合镀层腐蚀速率明显低于Ni-Zn-P合金镀层，相对于Ni-Zn-P合金镀层耐蚀性更好。 |
| 英文摘要: |
| The work aims to improve corrosion resistance of metal materials in marine environment. Ni-Zn-P alloy coating and Ni-P/Ni-Zn-P bilayered composite coating were prepared on Q235 steel by virtue of chemical plating. Surface morphology and fracture surface of the coatings were analyzed with SEM and EDS. The Ni-P/Ni-Zn-P bilayered composite coating was more uniform and smooth than Ni-Zn-P alloy coating, and the cell boundary was more continuous and dense as well. Cross section thickness of Ni-Zn-P alloy coating was about 6.5 μm, and Zn and P mass fraction nearly 4% and 14% respectively. Overall thickness of Ni-P/Ni-Zn-P bilayered composite coating was about 7.5μm, thickness of inner coating about 2.3 μm, P mass fraction about 9%; the outer coating about 5.2 μm, Zn and P mass fraction of about 5% and 11% respectively. After being corroded for 144h in 5% solution, the Ni-Zn-P alloy coating was severely damaged and many cracks were present. The Ni-P/Ni-Zn-P bilayered composite coating remained intact and was subject to localized corrosion instead of serious damage, indicating that the bilayered coating was more resistant to corrosion. Corrosion rate of Ni-P Ni-Zn-P bilayered coating was significantly lower than that of Ni-Zn-P alloy coating, corrosion resistance of the former was better as well. |
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