Liu Yan,Ji Jie*.Preparation and properties of Ni-W/ZnO superhydrophobic composite coating on 45# steel[J].Plating & Finishing,2023,(5):26-33.[doi:10.3969/j.issn.1001-3849.2023.05.004]
45#钢表面Ni-W/ZnO超疏水复合涂层的制备及性能研究
- Title:
- Preparation and properties of Ni-W/ZnO superhydrophobic composite coating on 45# steel
- Keywords:
- Ni-W/ZnO superhydrophobic composite coating ; 45# steel ; electrodeposition ; mechanical stability ; corrosion resistance
- 分类号:
- TG174
- 文献标志码:
- A
- 摘要:
- 采用电沉积工艺并结合喷涂法在 45# 钢表面制备 Ni-W/ZnO 超疏水复合涂层,表征了复合涂层的微观形貌和主要成分,并对复合涂层的疏水性、机械稳定性及耐蚀性进行测试分析。结果表明:复合涂层表面形成微纳米分级结构,主要成分为 Ni 、 W 、 Zn 、 O 、 C 和 Si 元素,改性 ZnO 颗粒在复合涂层中呈较均匀分散状态。复合涂层表面水滴接触角达到 151.4 ° ,表现出超疏水性能,并且经 20 次胶带提拉、 20 次砂粒冲击和 20 个周期砂纸摩擦后接触角仍然大于 150 ° ,能稳定地保持超疏水性能而且具有良好的机械稳定性。复合涂层还表现出优异的耐蚀性,其腐蚀电流密度仅为 6.79×10 -7 A/cm 2 ,极化电阻达到 3.25×10 4 Ω ·cm 2 ,相比于常规 Ni-W 合金镀层,能为 45# 钢提供理想的腐蚀防护作用。
- Abstract:
- : Ni-W/ZnO superhydrophobic composite coating was prepared on the surface of 45# steel by electrodeposition technology in combination with spraying method. The microstructure and main composition of the composite coating were characterized , and its hydrophobicity , mechanical stability and corrosion resistance were tested and analyzed. The results show that the formation of a micro-nano hierarchical structure on the composite coating surface , primarily composed of six elements : Ni , W , Zn , O , C and Si. A relatively uniform dispersion state is observed among the modified ZnO particles in the composite coating. The water droplet contact angle on the composite coating surface reaches 151.4 ° , which demonstrates superhydrophobicity. Following 20 repetitions of tape pulling , falling sand impact and sandpaper friction , the contact angle is still more than 150 ° , which indicates that the composite coating has the ability to stably maintain superhydrophobicity and possesses mechanical stability. In addition , the composite coating exhibits excellent corrosion resistance , with a corrosion current density of just 6.79×10 -7 A/cm 2 and polarization resistance of 3.25×10 4 Ω ·cm 2 , providing ideal corrosion protection for 45# steel in comparison to conventional Ni-W alloy coating.
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备注/Memo
收稿日期: 2022-09-21 修回日期: 2022-11-16 作者简介: 刘艳( 1978 -),硕士,讲师,主要从事机械设计、表面工程、智能制造等研究, email : Liu_eudd@163.com * 通信作者: 冀杰( 1982 -),博士,副教授,主要研究方向:新型材料与表面工程技术, email : jijiess@163.com 基金项目: 国家自然科学基金青年基金项目( 61304189 )