LI Weidong， ZHANG Zai， LI Wenhui， YANG Shengqiang
（School of Mechanical Engineering， Shanxi Key Laboratory of Precision Machining， Taiyuan University of Technology， Taiyuan 030024， China）
Abstract：In order to improve the stability of water-based fluid magnetic abrasives, sodium hexametaphosphate (SHMP) and PAA were selected as complex dispersants, nano-Si O2 was used as a adjuvant. The surface of solid phase particles in suspension was modified and the mechanism of its stability was studied. The single solid particles were analyzed to characterize its physical properties on a micro level, and the stability of the modified water-based fluid magnetic abrasives was studied with sedimentation rate and zero magnetic field viscosity as an index.The results show that the optimum formula ratio of sodium hexametaphosphate, PAA and nano-Si O2 is 0.19:0.40:0.41, and its stability is the best.
Keywords：fluid magnetic abrasives; stability; compound dispersant
文章编号：1008-5548（2018）03-0039-05
DOI：10.13732/j.issn.1008-5548.2018.03.008
收稿日期：2017-10-18， 修回日期：2018-01-12，在线出版时间：2018-05-08。
基金项目：国家自然科学基金项目，编号：51175365；山西省自然科学基金项目，编号：201701D121076。
第一作者简介：李唯东（1974—），男，博士，研究方向为机械零件表面光整加工。E-mail：liweidong@tyut.edu.cn。
