杨水梅,张留艳,詹浩芝,罗军平,吕晓,揭晓华.掺杂镍对镁合金表面冷喷涂锌基涂层性能的影响[J].表面技术,2019,48(5):217-224.
YANG Shui-mei,ZHANG Liu-yan,ZHAN Hao-zhi,LUO Jun-ping,LYU Xiao,JIE Xiao-hua.Effect of Mixing Ni on Properties of Cold Sprayed Zn-based Coating on Mg Alloy[J].Surface Technology,2019,48(5):217-224 |
| 掺杂镍对镁合金表面冷喷涂锌基涂层性能的影响 |
| Effect of Mixing Ni on Properties of Cold Sprayed Zn-based Coating on Mg Alloy |
| 投稿时间：2018-10-12 修订日期：2019-05-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.05.032 |
| 中文关键词: 冷喷涂 锌基涂层 腐蚀 耐磨 镁合金 |
| 英文关键词:cold spraying zinc-based coating wear resistance corrosion resistance magnesium alloy |
| 基金项目:国家自然科学基金（51709049）；广东省科技计划项目（2016A010103034） |
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| Author | Institution |
| YANG Shui-mei | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| ZHANG Liu-yan | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| ZHAN Hao-zhi | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| LUO Jun-ping | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| LYU Xiao | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
| JIE Xiao-hua | School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
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| 中文摘要: |
| 目的 研究镍添加对冷喷涂锌基涂层耐蚀性的影响，为镁合金提供有效的防护涂层。方法 采用低压冷喷涂技术在镁合金基体表面分别制备锌基和锌/镍基复合涂层，通过微观观察、摩擦磨损实验、电化学极化法和电化学阻抗谱测试及全浸泡腐蚀试验，研究镁合金表面冷喷涂涂层的结构、摩擦磨损行为和耐蚀性。结果 镁合金表面冷喷涂锌基涂层后，其硬度和耐磨性得到显著提高，掺镍后的锌/镍基涂层具有更高的硬度和耐磨性。锌基和锌/镍基涂层均能为镁合金提供腐蚀防护，锌/镍基涂层比锌基涂层具有更好的耐蚀性。相对镁合金来说，锌基涂层和锌/镍基涂层的自腐蚀电位分别正移了260 mV和560 mV；长期腐蚀后锌/镍基涂层形成了更致密的腐蚀产物膜，腐蚀电阻显著高于锌基涂层。结论 冷喷涂锌基和锌/镍复合涂层均能对镁合金提供防护作用，掺杂镍后的锌/镍基复合涂层具有更高的硬度、耐磨性和耐蚀性。 |
| 英文摘要: |
| The work aims to study the effect of nickel addition on the corrosion resistance of cold sprayed Zn-based coatings and provide an effective protective coating for magnesium alloys. Zn-based coatings and Zn/Ni-based composite coatings were deposited on Mg alloy respectively by low pressure cold spray (LPCS) method. The structure, friction-wear behavior and corro-sion resistance of the cold sprayed coatings on Mg alloy were investigated by microscopic observation, friction and wear ex-periment, electrochemical polarization method, electrochemical impedance spectrum test and total immersion corrosion test. The hardness and wear resistance of Mg alloy surface were improved significantly after cold sprayed Zn-based and Zn/Ni-based coatings, coating was while deposited and Zn/Ni-based coatings had higher hardness and resistance corrosion. Both of the Zn-based and Zn/Ni-based coatings could provide corrosion protection for Mg alloys, while Zn/Ni-based coating showed better corrosion resistance than Zn-based coating. In comparison with bare Mg alloy, the free corrosion potential of Zn-based coating and Zn/Ni-based coating was positively shifted by 260 mV and 560 mV, respectively. After long-term corrosion, the Zn/Ni-based coating formed a denser corrosion product layer, accompanied with higher corrosion resistance value than the Zn-based coating sample. Cold sprayed Zn-based and Zn/Ni-based coatings can both provide corrosion protection for Mg alloy, but Zn/Ni-based composite coating has better hardness and wear and corrosion resistance. |
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