On the Possibility of Chemo-Mechanical Action in Magnetic Float Polishing of Silicon Nitride
Author:
Komanduri R.1, Umehara N.1, Raghunandan M.1
Affiliation:
1. Mechanical & Aerospace Engineering, Oklahoma State University, Stillwater, OK 74074
Abstract
Chromium oxide abrasive has been reported in the literature to provide efficient chemo-mechanical polishing action for silicon nitride ceramic. Since aluminum oxide and chromium oxide abrasives are nearly of the same hardness, magnetic float polishing tests were conducted on silicon nitride balls with these two abrasives to investigate mechanical versus chemo-mechanical aspects of polishing. Tests results show higher removal rates and smoother surface texture (with fewer pits) with chromium oxide abrasive compared to aluminum oxide abrasive. Formation of pits due to brittle fracture seems to be the more predominant mode of material removal with aluminum oxide abrasive than with chromium oxide abrasive. While there may be some mechanical action (abrasion) with chromium oxide abrasive initially, subsequent removal is believed to be due to chemo-mechanical action. This could be due to degeneration of the chromium oxide abrasive (both mechanical and chemical) during polishing. Various hypotheses for the material removal mechanism (both mechanical and chemo-mechanical) were considered. Based on that, the higher removal rates and smoother surface texture on the silicon nitride balls with chromium oxide abrasive in semifinish polishing is interpreted here as possibly due to chemo-mechanical action. Higher chemical stability of aluminum oxide abrasive (compared to chromium oxide abrasive) and the known role of chromium oxide as a catalyst for the oxidation of silicon nitride are some of the reasons attributed for this action.
Publisher
ASME International
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference45 articles.
1. Akazawa M. , and KatoK., 1988, “Wear Properties of Si3N4 in Rolling-Sliding Contact,” Wear, Vol. 124, pp. 123–132. 2. Akazawa M. , KatoK., and UmeyaK., 1986, “Wear Properties of Silicon Nitride in Rolling Contact,” Wear, Vol. 110, pp. 285–293. 3. Bifano T. G. , DowT. A., and ScattergoodR. O., 1991, “Ductile Regime Grinding: A New Technology for Machining Brittle Materials,” ASME JOURNAL OF TRIBOLOGY, Vol. 113, pp. 184–189. 4. Childs T. H. C. , JonesD. A., MahmoodS., KatoK., ZhangB., and UmeharaN., 1994a, “Magnetic Fluid Grinding Mechanics,” Wear, Vol. 175, pp. 189–198. 5. Childs T. H. C. , MahmoodS., and YoonH. J., 1994b, “The Material Removal Mechanism in Magnetic Fluid Grinding of Ceramic Ball Bearings,” Proc. of the I. Mech. E., Vol. 208 B1, pp. 47–59.
Cited by
23 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. Advances in ultra-precision machining of bearing rolling elements;The International Journal of Advanced Manufacturing Technology;2022-09-21 2. Recent Advancements in Machining With Abrasives;Journal of Manufacturing Science and Engineering;2020-09-17 3. Polishing Wear;Friction, Lubrication, and Wear Technology;2017-12-31 4. Deterministic Polishing of Smooth and Structured Molds;Lecture Notes in Production Engineering;2013 5. Magnetic Abrasive Finishing (MAF);Micromanufacturing Processes;2012-09-27
|
|