PARVIN Nader Amirkabir University of Technology

Investigating the Effect of Type and Thickness of the Oxide Layer Produced by Steam Treatment on Wear Behavior of Sintered Steel Compacts

Co-authors HASHEMI Zahra, PEIGHAMBARZADEH Seyyed Mohammad Hossein, NAEIMI Mohammad

Steam treatment is a significant method for modifying the surface properties and sealing porosity and improving aesthetics in sintered iron components. Steam treatment as a promising approach increases the weight, size, density, and hardness of the parts. In the present work, the effect of steam treatment on the wear behavior of a Fe base alloy processed by powder metallurgy was investigated. Wear tests were carried out to evaluate the durability of steam oxidized layer and its effect on wear mechanism. Pin-on-disc tribological tests according to ASTM G-99 standard were conducted at a normal load of 50N and a constant speed of 0.1 m/s in dry conditions and at room temperature. The wear rate was measured. The microstructure and worn surfaces were also studied. Results showed that steam treatment by producing a magnetite layer on the surface and in the pore network makes a remarkable change on hardness and modifies the wear behavior of the compacts.

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