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Friction and wear studies in N-implanted Al/sub 2/O/sub 3/, SiC, TiB/sub 2/, and B/sub 4/C ceramics

Journal Article · · J. Mat. Res.; (United States)
OSTI ID:6743919
Bulk polycrystalline samples of sintered Al/sub 2/O/sub 3/, and hot-pressed Al/sub 2/ O/sub 3/ , SiC, TiB/sub 2/ , and B/sub 4/ C ceramics were ion implanted at 77 K with 190 keV N/sup +/ to a dose of 3 x 10/sup 17/ N/cm/sup 2/. Nitrogen implantation resulted in reduced friction coefficients for SiC, TiB/sub 2/ , and B/sub 4/ C samples and a reduction in wear for TiB/sub 2/. Both Al/sub 2/ O/sub 3/ samples showed a significant increase in friction coefficients after nitrogen implantation. Nitrogen-implantation-induced changes in these properties appear to be correlated with the thermodynamic tendency of the sample to form ''nitridelike'' bonds.
Research Organization:
Los Alamos National Laboratory, Materials Science and Technology Division, Los Alamos, New Mexico 87545
OSTI ID:
6743919
Journal Information:
J. Mat. Res.; (United States), Journal Name: J. Mat. Res.; (United States) Vol. 3:6; ISSN JMREE
Country of Publication:
United States
Language:
English