Study on Wear Mode of Silicon Nitride Balls in Lapping Process

• DOI: 10.4028/www.scientific.net/kem.304-305.403
• Publication Date: 2009-03-11T22:14:18Z
• Authors: Bing Hai Lv; Ju Long Yuan; Ying Xue Yao; Z.W. Wang; B.C. Tao; J.J. Zhen; Ping Zhao
• Keywords: 02 engineering and technology; 0210 nano-technology

To understand the mechanism involved in the lapping process of the silicon nitride balls, the wear mode is investigated in this paper. The abrasion tests were performed on a ball-plate wear test apparatus with different loads (0~2N/ball) and slurry concentrations (5%wt~30%wt W20 B4C3). The abraded surface is observed by optical telescope. A wear-mode map, which defines the regimes for two-body abrasion or three-body abrasion dominating in the micro-scale abrasion test, is plotted with two axes: load and concentration of abrasive. An empirical formula for the wear mode transition is adopted to calculate the transition point S*, which can then used to predict the wear mode in lapping process of silicon nitride ball.