文献类型：期刊文献

英文题名：Surface roughness and fracture cracks of Al₂O₃/TiO₂ composite coating by wet chemical mechanical grinding with structured abrasives pad

作者：Yao, Weifeng[1,2,3];Chen, Zhan[1];Yang, Jianguo[3];Zhou, Fenfen[4];Zhang, Tianqi[1];Dong, Jian[5];Zhang, Yuhui[2]

机构：[1]Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing 312000, Peoples R China;[2]Zhejiang XCC Grp Co Ltd, Shaoxing 312500, Peoples R China;[3]Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Peoples R China;[4]Taizhou Univ, Sch Intelligent Manufacture, Taizhou 318000, Peoples R China;[5]Shaoxing Univ, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2024

卷号：33

起止页码：361

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：SCI-EXPANDED(收录号：WOS:001317727300001)、、EI(收录号：20243817054495)、Scopus(收录号：2-s2.0-85203802074)、WOS

基金：This research was supported by the Zhejiang Provincial Natural Science Foundation of China [grant No. LZY23E050002, ZCLY24E0501] ; China Postdoctoral Science Foundation [grant No. 2024M752897 and 2023M733174] ; National Natural Science Founda-tion of China [grant No. 52375391] .

语种：英文

外文关键词：Hard-brittle composite; Chemical mechanical grinding; Ductile removal; Surface integrity; Indentation fracture mechanics

外文摘要：In the fields of wind power, and other industries, the Al2O3/TiO2 coating is prepared and ground on the bearing ring, in order to obtain the insulation resisting the electrical erosion for the motors at high voltage. A novel wet chemical mechanical grinding (WCMG) method is proposed to finish this hard-brittle composite material, utilizing the structured diamond abrasives pad and the NaOH solution. The softened workpiece's surface under the chemical reaction was demonstrated by means of Raman spectrum, indentation and scratching tests. The analytical model of surface roughness and fracture cracks is established based on the synthesis of geometry and kinematics, contact mechanics, material removal and indentation fracture mechanics. The surface roughness of coating was reduced from initial S-a 3.293 mu m down to final S-a 0.049 mu m in the WCMG process with grain size 3 mu m and pH 12.01, mostly attributed to the ductile removal of chemically softened coating surface.