A facile method to prepare stearic acid-TiO2/zinc composite coating with multipronged robustness, self-cleaning property, and corrosion resistance
A facile method to prepare stearic acid-TiO2/zinc composite coating with multipronged robustness, self-cleaning property, and corrosion resistance
复制标题
一种简便的方法制备具有多方面坚固性、自洁性和耐腐蚀性的硬脂酸-TiO2/锌复合涂层
DOI：
10.1016/j.jallcom.2021.160636
复制
发表时间：
2021-06-09
影响因子：
6.2
通讯作者：
Ren, Kangning
中科院分区：
文献类型：
--
作者：
Hu, Chuanbo;Xie, Xinying;Ren, Kangning
尽管已经开发了一些超疏水涂层来增强钢的耐腐蚀性，但还没有一种解决方案同时满足坚固性和服务耐用性。利用电沉积过程中颗粒生成受控的特点，采用纳米二氧化钛与锌离子共沉积的方法，在碳钢表面制备了具有层次化微结构的多功能硬脂酸-二氧化钛/锌复合涂层。用一系列手段对STA-TZC涂层的结构进行了表征。在TZC表面涂覆STA涂层的微/纳米结构表面赋予了所制备的STA-TZC涂层优异的超疏水性能，其水接触角和滑移角分别为160+/-1.4度和5.4+/-0.2度。通过刀具划痕试验、胶带剥离试验、砂纸磨损试验和耐化学腐蚀试验表明，STA-TZC涂层具有良好的机械稳定性和化学稳定性。此外，STA-TZC涂层具有良好的自洁性、耐腐蚀性和超疏水稳定性。结果表明，在多孔锌层中填充纳米二氧化钛颗粒，然后用STA膜进行改性，可显著提高涂层的耐腐蚀性和机械磨损性。这种电化学共沉积-改性方法在探索和制备金属基超疏水涂层方面具有广阔的应用前景。(C)2021年爱思唯尔B.V.保留所有权利。
Despite that some superhydrophobic coatings have been developed to enhance the corrosion resistance of steel, there lacks a solution that also fulfills both robustness and service durability. Taking advantage of the controlled generation of particles during electrodeposition, a multifunctional stearic acid (STA)-TiO2/zinc composite (TZC) coating with hierarchical microManostructures by codeposition of TiO(2 )nanoparticles and zinc ions was prepared on carbon steel substrates. The structures of STA-TZC coating were characterized by a series of means. The micro/nanoscale structured surface based on TZC with STA overcoat imparted the prepared STA-TZC coating with outstanding superhydrophobic property; the water contact angle and sliding angle were 160 +/- 1.4 degrees and 5.4 +/- 0.2 degrees, respectively. According to the tests of knife scratching, adhesive tape peeling, sandpaper abrasion, and chemical corrosion resistance, the STA-TZC coating presented good mechanical and chemical stabilities. Additionally, STA-TZC coating showed excellent self-cleaning property, corrosion resistance, and superhydrophobic stability. The results indicated that filling the voids of porous zinc coating with TiO2 nanoparticles and subsequently modifying with STA film could greatly improve the coating's resistance to corrosion and mechanical abrasion. This electrochemical codeposition-modification method has broad application prospects for exploring and preparing metal-based superhydrophobic coatings. (C) 2021 Elsevier B.V. All rights reserved.