Zaiqiang Feng, Chenxi Li, Chang Xin, Zhengquan Jiang, Zhenwei Yan, Wen Wang, Ningning Li, Zhaojun Tan and Mingqi Tang
{"title":"Composite microarc oxidation coatings containing Cu on titanium alloy","authors":"Zaiqiang Feng, Chenxi Li, Chang Xin, Zhengquan Jiang, Zhenwei Yan, Wen Wang, Ningning Li, Zhaojun Tan and Mingqi Tang","doi":"10.1039/D4RA06194B","DOIUrl":null,"url":null,"abstract":"<p >A soft and hard composite MAO coating was prepared by adding Cu particles to an alkaline phosphate-borate electrolyte to modify the MAO coating on titanium alloy. The effects of Cu particles on the thickness, structural features, and friction characteristics of the MAO coating were investigated. The MAO coating formed in Cu particle-free electrolyte mainly comprised rutile and anatase TiO<small><sub>2</sub></small>. Cu and CuO were detected in the oxide coatings obtained in the electrolyte with Cu particles. The hardness of the coating prepared in the base electrolyte was approximately 420 HV, whereas that obtained in the electrolyte containing 2 g L<small><sup>−1</sup></small> Cu particles increased to 470 HV. While the friction coefficient of the base MAO coating exhibited significant fluctuations, the friction coefficient of the MAO coating containing Cu particles remained relatively stable. The MAO coating formed in the electrolyte containing 2 g L<small><sup>−1</sup></small> Cu particles demonstrated superior frictional performance, exhibiting a value approximately 3.6 times higher than the base coating. Cu particles enter the MAO coating through electrophoresis, mechanical agitation, and micro-melt adsorption to improve the compactness of the coating. Due to the excellent plasticity of Cu, the friction properties of Cu-containing MAO coating were enhanced.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06194b?page=search","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"RSC Advances","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ra/d4ra06194b","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A soft and hard composite MAO coating was prepared by adding Cu particles to an alkaline phosphate-borate electrolyte to modify the MAO coating on titanium alloy. The effects of Cu particles on the thickness, structural features, and friction characteristics of the MAO coating were investigated. The MAO coating formed in Cu particle-free electrolyte mainly comprised rutile and anatase TiO2. Cu and CuO were detected in the oxide coatings obtained in the electrolyte with Cu particles. The hardness of the coating prepared in the base electrolyte was approximately 420 HV, whereas that obtained in the electrolyte containing 2 g L−1 Cu particles increased to 470 HV. While the friction coefficient of the base MAO coating exhibited significant fluctuations, the friction coefficient of the MAO coating containing Cu particles remained relatively stable. The MAO coating formed in the electrolyte containing 2 g L−1 Cu particles demonstrated superior frictional performance, exhibiting a value approximately 3.6 times higher than the base coating. Cu particles enter the MAO coating through electrophoresis, mechanical agitation, and micro-melt adsorption to improve the compactness of the coating. Due to the excellent plasticity of Cu, the friction properties of Cu-containing MAO coating were enhanced.
通过在碱性磷酸盐硼酸盐电解液中添加铜粒子来改性钛合金上的 MAO 涂层,制备了一种软硬复合 MAO 涂层。研究了 Cu 颗粒对 MAO 涂层的厚度、结构特征和摩擦特性的影响。在不含 Cu 粒子的电解液中形成的 MAO 涂层主要由金红石型和锐钛型 TiO2 组成。在含有 Cu 颗粒的电解液中获得的氧化物涂层中检测到了 Cu 和 CuO。在碱性电解液中制备的涂层硬度约为 420 HV,而在含有 2 g L-1 Cu 颗粒的电解液中制备的涂层硬度则增至 470 HV。基础 MAO 涂层的摩擦系数波动较大,而含铜颗粒的 MAO 涂层的摩擦系数则相对稳定。在含有 2 g L-1 铜微粒的电解液中形成的 MAO 涂层显示出卓越的摩擦性能,其摩擦系数值是基底涂层的约 3.6 倍。铜颗粒通过电泳、机械搅拌和微熔体吸附进入 MAO 涂层,从而提高了涂层的致密性。由于铜具有优异的可塑性,含铜 MAO 涂层的摩擦性能得到了提高。
期刊介绍:
An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.