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The investigation of microstructure and mechanical properties of oxide powders coated on engine pistons surface

ERDINÇ VURAL1, SERKAN ÖZEL2,* , BÜLENT ÖZDALYAN3

Affiliation

  1. Bitlis Eren University, Vocational School of Technical Sciences, 13000-Bitlis, Turkey
  2. Bitlis Eren University, Faculty of Engineering Architecture, Dept. of Mechanical Eng., 13000-Bitlis, Turkey
  3. Karabuk University, Faculty of Engineering, Department of Automotive Engineering, 78100-Karabük, Turkey

Abstract

In this study, the surface of a piston (AlSi12CuNi) belonging to a diesel engine was coated with ZrO2+MgO/Al2O3 powders by using plasma spray technique. The coating layers were examined with optical microscopy, SEM, EDS and XRD analysis. The adhesive strength and microhardness were measured. In XRD studies, such compounds as ZrO2 (Tetragonal), ZrO2 (Monoclinic), MgO, Al3Zr5, α-Al2O and γ-Al2O3 have been identified on ZrO2+MgO/Al2O3 coating layers. The best adhesion strength and maximum hardness value have been determined in the sample coated with ZrO2+MgO+ 50wt. %Al2O3 powder..

Keywords

Piston, Plasma Spraying, Coating, ZrO2 + MgO /Al2O3.

Citation

ERDINÇ VURAL, SERKAN ÖZEL, BÜLENT ÖZDALYAN, The investigation of microstructure and mechanical properties of oxide powders coated on engine pistons surface, Optoelectronics and Advanced Materials - Rapid Communications, 8, 5-6, May-June 2014, pp.515-520 (2014).

Submitted at: April 2, 2014

Accepted at: May 15, 2014