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Wear of Nitrogen Ceramics and Composites in contact with Bearing Steel under Oscillating Sliding Conditions
Central Glass and Ceramic Research Institute (CGCRI), Calcutta.
1998 (English)In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 24, no 1, p. 19-24Article in journal (Refereed) Published
Abstract [en]

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 TiC; SiAlON formulated with different amounts of alumina and silica; and aluminatitanium nitride composite having 60 mol% TiN. Among the HPSN composites, HPSN 15vol% TiC had the lowest average wear factor (K) of 2.0 × 10- 5mm3/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 × 10-5mm3/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 × 10-7mm3/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.

Place, publisher, year, edition, pages
1998. Vol. 24, no 1, p. 19-24
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-7334DOI: 10.1016/S0272-8842(96)00070-3Local ID: 5b3d4220-9910-11dc-8ccb-000ea68e967bOAI: oai:DiVA.org:ltu-7334DiVA, id: diva2:980223
Note
Upprättat; 1998; 20071122 (brap)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-10Bibliographically approved

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Prakash, Braham

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