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


Vural E., ÖZEL S., ÖZDALYAN B.

OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, cilt.8, ss.515-520, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 8
  • Basım Tarihi: 2014
  • Dergi Adı: OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
  • Sayfa Sayıları: ss.515-520

Özet

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, alpha-Al2O and gamma-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.