论文部分内容阅读
在含有In2S3的硅酸盐电解液中对ZL108铝合金进行了微弧氧化处理.采用扫描电镜(SEM)、光学轮廓仪、X射线衍射(XRD)、X射线光电子能谱(XPS)和电化学工作站等检测手段,研究了添加In2S3对MAO膜层微观结构、相组成和耐蚀性等的影响.结果表明,In2S3的加入提高了微弧氧化电压,使膜层成膜速率增加,从而导致膜层厚度增加.在含有In2S3的电解液中形成的膜层致密性更好,膜层显微硬度提高,膜层的耐蚀性增强.膜层主要由a-Al203、γ-Al203和Si02相组成.XPS检测结果表明In2S3在氧化过程中转变为In203.因此,添加In2S3优化了MAO膜层结构,提高了MAO膜层的综合性能.“,”Micro-arc oxidation(MAO)coatings were formed on ZL108 aluminum alloy in the silicate electrolyte with ln2S3.Scanning electron microscopy(SEM),optical profilometer,X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and electrochemical workstation were used to study the effects of In2S3 on the micro-structure,phase composition and corro-sion resistance of the micro-arc oxidation coating.The results show that the addition of In2S3 increased the micro-arc oxidation voltage so the coating formation rate was increased,which resulted in the increasing of the thickness of the micro-arc oxida-tion coating.The micro-arc oxidation coating formed in the electrolyte containing In2S3 had higher density and micro-hardness,resulting in the enhanced corrosion resistance.The phases of the micro-arc oxidation coating were mainly composed of a-Al203,γ-Al203 and SiC2.XPS test result shows that In2S3 was converted to ln203 during the micro-arc oxidation process.Therefore,the addition of In2S3 can optimize the structure of the micro-arc oxidation coating and improve its comprehensive properties.