Effect of sintering temperature on tribological behavior of Ce-TZP/Al2O3-aluminum nanocomposite

SAGE Publications - Tập 49 Số 28 - Trang 3507-3514 - 2015
Amin Bahrami1, N. Soltani1,2, M.I. Pech‐Canul1
1Centro de Investigación y de Estudios Avanzados del IPN Unidad Saltillo, Av. Industria Metalúrgica, No. 1062, Parque Industrial Ramos Aripe-Saltillo, Ramos Arizpe, Coahuila, México, 25900
2Department of Materials Science and Engineering, Sharif University of Technology, Iran.

Tóm tắt

10Ce-TZP/Al2O3 nanoparticles as reinforcement can be a good substitute in aluminum matrix composites prepared through powder metallurgy. In this work, the effects of sintering temperature on the hardness, friction, and wear characteristics of Al-10Ce-TZP/Al2O3 composites have been investigated. Ce-TZP/Al2O3 nanocomposites were synthesized by the aqueous combustion method. About 7 wt% 10Ce-TZP/Al2O3-aluminum composites in the form of cylindrical samples were prepared at the sintering temperatures of 400℃, 450℃, and 500℃ under an applied pressure of 600 MPa for 60 min. The experimental results show that the distribution of Ce-TZP/Al2O3 nanocomposite into the metal matrix is homogenous and that at 450℃ the hardness and wear resistance improved considerably. Formation of an oxide layer is a manifestation that in nanocomposites produced at 450℃, worn surfaces were smoother and the total depth of deformations were not severe.

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