Tribological Properties of Boron Carbide Reinforced Copper Based Composites

Year 2017, Volume: 2 Issue: 1, 102 - 107, 25.02.2017

Huseyin Ipek

Abstract

In
this study, a boron carbide (B4C) reinforced copper based Metal Matrix
Composites (MMCs) manufactured by powder metallurgy method and tribological
behavior of compacted composites were investigated. B4C reinforcement was
selected at different ratio from 2%wt to 10%wt. Powders was compacted under 735±1 MPa pressure in a
die with cold pressing method. Sintering of the samples was performed at two
different sintering time as 1 hour and 3 hours under Ar gas atmosphere at 900 °C. Tribological tests
were performed by using a computer aided pin-on-disc experimental setup under
dry sliding conditions. Tribological tests were performed from 1 hour to 5
hours. And wearing surfaces were investigated in a Scanning Electron Microscope
SEM) and mechanisms of the wear were detected. In addition to that tribological
behavior and porosity properties of the manufactured samples were investigated.
It was found that the porosity of the samples was increased with increasing B4C
content. Nevertheless, wear resistivity increased with increasing reinforcement
content.

Keywords

Metal Matrix Composites (MMC’s), B4C, Tribology, Copper Based Composites

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