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Technologies 2016, 4(3), 27; doi:10.3390/technologies4030027

Dry Sliding Wear Behavior of Spark Plasma Sintered Fe-Based Bulk Metallic Glass/Graphite Composites

1
College of Mechanical & Electrical Engineering, Hohai University, Changzhou 213022, China
2
School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Manoj Gupta
Received: 31 July 2016 / Revised: 24 August 2016 / Accepted: 29 August 2016 / Published: 2 September 2016
(This article belongs to the Special Issue Spark Plasma Sintering of Materials)
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Abstract

Bulk metallic glass (BMG) and BMG-graphite composites were fabricated using spark plasma sintering at the sintering temperature of 575 °C and holding time of 15 min. The sintered composites exhibited partial crystallization and the presence of distributed porosity and graphite particles. The effect of graphite reinforcement on the tribological properties of the BMG/graphite composites was investigated using dry ball-on-disc sliding wear tests. The reinforcement of graphite resulted in a reduction in both the wear rate and the coefficient of friction as compared to monolithic BMG samples. The wear surfaces of BMG/graphite composites showed regions of localized wear loss due to microcracking and fracture, as was also the case with the regions covered with graphite-rich protective film due to smearing of pulled off graphite particles. View Full-Text
Keywords: bulk metallic glass; spark plasma sintering; solid lubrication; graphite; wear; tribology bulk metallic glass; spark plasma sintering; solid lubrication; graphite; wear; tribology
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Ji, X.; Alavi, S.H.; Harimkar, S.P. Dry Sliding Wear Behavior of Spark Plasma Sintered Fe-Based Bulk Metallic Glass/Graphite Composites. Technologies 2016, 4, 27.

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