Characterisation of oxidation and wear oxidised surfaces of H13 steel/brass in dry sliding conditions
by Mohamed Kchaou; Amel Alimi; Riadh Elleuch; Yannick Desplanques
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 8, No. 4/5, 2013

Abstract: Although oxide scale has significant influence on surface quality of hot-worked products, deformation of the scale during hot working has not been understood sufficiently. The authors propose an experimental study to analyse the oxidation and the tribological behaviour of a ferrous alloy (X40CrMoV5-1, H13 steel) and non ferrous alloy (CuZn39Pb3, brass alloys) in dry sliding conditions. The tribological behaviour of the pair of materials is carried out on a pin-on disk wear tester after oxidation at 600°C for 70 h. It was found that: i) a loose oxide film wholly covered the surface of the steel; ii) Fe₂O₃ as the main oxide was identified except for a small amount of Fe₃O₄; iii) during friction, a compacted oxide film was established on the worn surface of the steel. The analysis of the worn surface showed two regions: a delamination region due to the delamination of tribo-oxide during wear and an undelamination region characterised by the dominance of Fe₃O₄ tribo-oxides on the worn surface.

Online publication date: Mon, 07-Oct-2013

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