2010•Materials Science and Engineering of Powder MetallurgyRequires access

Sliding friction wear behaviors of C/C composites coupled with GH4169 alloy and high-strength graphite

Yicheng Ge

Abstract

Using a M-2000 wear machine,the tribology properties of C/C composite with rough lamination/smooth lamination/resin carbon(RL/SL/RC) matrix and two kinds of high-strength graphite which were used as seal ring of airplane engine main axis were studied with GH4169 alloy as couple.The results show that the friction coefficient of high-strength graphite was 0.23?0.28,while that of the C/C composite was only 0.11?0.18 under pressure of 60?180 N.It indicated that compared with the high-strength graphite,the C/C composite had lower and more stable friction coefficient,smaller bulk worn loss and more suitable to be used as the seal ring of the main axis of aeroplane engine.

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Key concepts: Materials science, Graphite, Lamination, Composite material, Composite number, Alloy, Tribology, Seal (emblem)