Table of Contents
Conference Papers in Science
Volume 2015, Article ID 919308, 8 pages
http://dx.doi.org/10.1155/2015/919308
Conference Paper

Tribological Characteristics of the Magnesium Matrix-Glassy Carbon Particles Composite Manufactured by Different Casting Methods

Institute of Materials Science, Faculty of Materials Science and Metallurgy, Silesian University of Technology, Ulica Krasińskiego 8, 40-019 Katowice, Poland

Received 5 July 2014; Accepted 2 December 2014

Academic Editor: Martin Dienwiebel

This Conference Paper is based on a presentation given by Bartosz Hekner at “European Symposium on Friction, Wear, and Wear Protection” held from 6 May 2014 to 8 May 2014 in Karlsruhe, Germany.

Copyright © 2015 Anita Olszówka-Myalska et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A particulate composite with a magnesium matrix (Mg3Al) and glassy carbon particles (GCp) obtained under industrial conditions from a gravity cast and pressure die cast suspension was examined. The influence of the casting procedure on the microstructure and mechanical properties was revealed. Sliding friction tests by the pin-on-disc method for different loads (2.3, 5, and 9.3 N) and speeds (0.06, 0.09, and 0.14 m/s) were performed. Regardless of the technology, the sliding friction coefficient’s value strongly depended on the load and speed. Its value was changing (0.35–0.13) and was usually higher for the pressure die cast material, yet the wear resistance of the composite processed in that way was considerably better compared with the gravity cast. The results of the worn surface observation by SEM with EDS showed an influence of the initial Mg3Al-GCp composite’s microstructure on the processes of its wear.