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The selection of bearing steel surfaces for use with silicon nitride rolling elements within hybrid bearings is critical to the performance and life of such components, which have potential applications in advanced high speed aircraft. The wear and friction performance of these combinations is a major factor currently being considered for the next generation hybrid bearings. This paper reports on...
Friction and wear of pressureless sintered Ti(C,N)-WC ceramics were studied using a ball-on-reciprocating flat apparatus in open air. The silicon nitride ball and the cemented carbide (WC-Co) ball were used against the Ti(C,N)-WC plate samples. The friction coefficients of the Ti(C,N)-WC samples against the silicon nitride ball and the cemented carbide ball were about 0.57 and 0.3, respectively. The...
Erosion tests were conducted on silicon nitride containing uniaxially oriented large elongated grains using silicon carbide angular particles at impact angles from 45 to 90 o . Two different impact directions were selected to investigate the effect of elongated grain orientation on erosion behavior of self-reinforced silicon nitride. Erosion weight loss after impact of SiC particles was measured...
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