Knowledge of the hardness of abrasive particles that are used in polishing is a key to the fundamental understanding of the mechanisms of material removal. The magnetorheological-finishing process uses both magnetic and nonmagnetic abrasive particles during polishing. The nanohardnesses of the micrometer-sized magnetic carbonyl iron and nonmagnetic abrasive particles have been measured successfully by use of novel, to our knowledge, sample-preparation and nanoindentation techniques. Some of the results reported compare favorably with existing microhardness data found in the literature, whereas other results are new.
© 2000 Optical Society of America
Original Manuscript: January 28, 2000
Revised Manuscript: July 6, 2000
Published: October 1, 2000
Aric B. Shorey, Kevin M. Kwong, Kerry M. Johnson, and Stephen D. Jacobs, "Nanoindentation hardness of particles used in magnetorheological finishing (MRF)," Appl. Opt. 39, 5194-5204 (2000)