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http://dx.doi.org/10.3740/MRSK.2005.15.12.824

The Characteristics of Wear Resistance of Cu-TiB2 Composites Reinforced by TiB2 Powders  

Lee Tae-Woo (Department of Materials Science and Engineering, Seoul National University of Technology)
Choi Jong-Un (Department of Materials Science and Engineering, Seoul National University of Technology)
Kang Kae-Myung (Department of Materials Science and Engineering, Seoul National University of Technology)
Publication Information
Korean Journal of Materials Research / v.15, no.12, 2005 , pp. 824-828 More about this Journal
Abstract
In this study the effect of the content of $TiB_2$ on wear properties was investigated. $Cu-TiB_2$ composites have been fabricated by hot extrusion. Sliding wear tests were peformed by a pin-on-disk type wear test machine under dry condition and loads varied with from 20N to 80N at sliding speed 3.5Hz. The test results showed that the wear losses and the friction coefficients decreased with increasing $Cu-TiB_2$ volume fraction and increasing the size of $Cu-TiB_2$ particle. Wear property of $10{\mu}m,\;5 vol\%\; TiB_2$ specimen was excellent all of the wear specimens. It is thought that the increase of plastic flow resistivity due to uniform distribution of $10{\mu}m,\;5 vol\%\; TiB_2$ wear specimen would improve wear property. The worn surface and wear debris were examined by optical microscope and scanning electron microscope.
Keywords
composites; wear debris; pin-on-disk type wear test; frictiion coefficient;
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