The Investigation of Tribological Behaviour Fe Matrix Hybrid Composites by Powder Metallurgy
AbstractThis study reports the effect of different size of particulates on wear behaviour of iron (Fe) matrix composites. Fe / 5 wt. % Al2O3 , Fe / 5 wt. % B4C and Fe 2.5 wt. % Al2O3 -2.5 wt. % B4C composites were produced thorough powder metallurgy. The samples were compacted under load of 500 MPa and followed by sintering at 1050 ºC for 1.5 h. The dry sliding wear behaviour of the samples were investigated by reciprocating wear tests under loads of 10, 20 and 40 N. In order to clarify wear mechanisms, worn surfaces were analysed by Scanning Electron Microscopy. The hybrid Fe 2.5 Al2O3 -2.5 B4C composites has the highest wear resistance. Oxidation and delamination are the main wear mechanisms.