Morphology of Ground and Lapped Surfaces of Ferrite and Metal

[+] Author and Article Information
S. Chandrasekar, M. C. Shaw

Department of Mechanical Engineering, Arizona State University, Tempe, AZ

B. Bhushan

IBM Almaden Research Center, San Jose, CA

J. Eng. Ind 109(2), 83-86 (May 01, 1987) (4 pages) doi:10.1115/1.3187112 History: Received September 10, 1986; Online July 30, 2009


Scanning electron microscope pictures of ground and lapped ferrite (sinfered magnetic ceramic) and steel surfaces and chips are studied and compared. These reveal considerably more plastic action associated with the formation of metal chips in fine grinding than for ferrite chips. Individual chips are an order of magnitude larger for metals than for ferrites. These results are consistent with the much greater specific grinding energy for metals than for ferrites. The depth of the plastically deformed layer beneath a ground surface revealed by etching corresponds closely with the depth of residual surface stress.

Copyright © 1987 by ASME
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