Mukerji, Joydeb and Prakash, Brahm (1998) Wear of nitrogen ceramics and composites in contact with bearing steel under oscillating sliding condition. Ceramics International, 24 (1). pp. 19-24. ISSN 0272-8842

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Abstract

The wear of nitrogen based ceramics in contact with bearing steel balls (SAE 52100) was investigated under reciprocating sliding conditions at a velocity of 0.1 m/s, and 20 N, 40 N and 100 N load. Three types of ceramics were studied: viz. hot pressed silicon nitride (:HPSN) sintered with selected liquid in the system yttria-aluminium nitride-silica and composites of HPSN with BN and TIG; SiAlON formulated with different amounts of alumina and silica; and alumina-titanium nitride composite having 60mol% TIN. Among the HPSM composites, HPSN 15 vol% TiC had the lowest average wear factor (K) of 2.0 x 10(-5) mm(3)/m/N. The SiAlONs, in general, had the highest K and this increased with increasing O concentration. The lowest K value for SiAlON ceramic was 6.9 x 10(-5) mm(3)/m/N. The high K value of SiAlON is attributed to O substitution, which promotes adhesive wear resulting in mutual material transfer. The lowest wear of all the ceramics tested was found for the alumina-titanium nitride composite, the wear factor being of the order of 4.4 x 10(-7) mm(3)/m/N, which is one order of magnitude lower than the other nitrogen ceramics. In the case of HPSN and alumina-titanium nitride composites, abrasive wear and wear due to microfracture were the main wear mechanisms. Wear of the steel ball was lowest when in contact with HPSN-TiC composites, being almost equal to that of the ceramic, whereas the alumina-titanium nitride composite wore away the steel almost 20 times faster than the ceramic and will thus be unsuitable as a counterface material for 52100 steel. (C) 1997 Elsevier Science Limited and Techna S.r.l.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	12 Jul 2012 07:26
Last Modified:	12 Jul 2012 07:26
URI:	http://cgcri.csircentral.net/id/eprint/1568

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