文献类型：期刊文献

英文题名：Corona discharge assisted shear thickening polishing: non-Newtonian elastohydrodynamics and electrostatics

作者：Yao, Weifeng[1,2];Chen, Zhan[1];Lyu, Binghai[3];Jiang, Liang[4];Zhang, Lihui[1]

机构：[1]Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Inst Artificial Intelligence, Shaoxing 312000, Peoples R China;[3]Zhejiang Univ Technol, Ultraprecis Machining Ctr, Hangzhou 310014, Peoples R China;[4]Southwest Jiaotong Univ, Sch Mech Engn, Chengdu 610031, Peoples R China

年份：2025

卷号：289

外文期刊名：INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

收录：SCI-EXPANDED(收录号：WOS:001429454900001)、、EI(收录号：20250817902907)、Scopus(收录号：2-s2.0-85217897296)、WOS

基金：This research was supported by the Zhejiang Provincial Natural Science Foundation of China [grant No LZY23E050002] ; China Post-doctoral Science Foundation [grant No 2024M752897] ; National Nat-ural Science Foundation of China [grant No 51935008, U24A20124, 52175441] .

语种：英文

外文关键词：Centerless polishing; Hydrodynamic modeling; Ceramic; Slurry film; Onset voltage; Ductile removal

外文摘要：The corona discharge, which is a kind of gas discharge technique producing electrostatic charges, is commonly applied in industrial fields such as precipitation, spray, and droplet manipulation. In this paper, a novel finishing method for cylindrical workpieces is proposed based on the combination of the centerless shear thickening polishing and the corona discharge. According to analytical computation and experimental verification upon the non-Newtonian elastohydrodynamics and the electrostatics, this method exhibited two distinguishing features: first, the slurry film was generated as a "flexible abrasives tool" under the non-Newtonian elastohydrodynamic pressure, benefiting the improvement of surface quality owing to the ductile removal; second, the abrasives slurry was charged by the corona discharge, contributing to the reduction of surface roughness deviation attributed to the charges repulsion leading to the inhibition of abrasives or particles agglomeration. The experiments of polishing Si3N4 ceramic bearing rollers on the self-made machine demonstrate that the good surface of the workpiece with a roughness of Sa 25.75 nm and few cracks was finally achieved from the initial Sa 123.70 nm.