Investigation on the Surface Structure and Tribological Characterization of 10 wt.% ZrO 2 -Reinforced Alumina Prepared by Flame Spray Coating-Reference-Cited by-同舟云学术

Investigation on the Surface Structure and Tribological Characterization of 10 wt.% ZrO 2 -Reinforced Alumina Prepared by Flame Spray Coating

Published:2024-02-20 Issue:2 Volume:17 Page:
ISSN:1946-3979
Container-title:SAE International Journal of Materials and Manufacturing
language:en
Short-container-title:SAE Int. J. Mater. Manf.

Author:

Younes Rassim¹,Baiamonte Lidia²,Idir Abdelhek¹,Dalibon Eugenia³,Sadeddine Abdelhamid¹,Bradai Mohand Amokrane¹

Affiliation:

1. University of Bejaia, Laboratory of Mechanics, Materials, and Energetic, Faculty of Technology, Algeria

2. Sapienza University of Rome – INSTM Reference Laboratory for Engineering of Surface Treatments, Department of Chemical Engineering, Materials and Environment, Italy

3. Universidad Tecnológica Nacional (UTN-FRCU), Surface Engineering Group, Uruguay

Abstract

<div>In this study, we have investigated the microstructural characteristics, the mechanical properties, and the dry sliding wear behavior of a ceramic coating consisting of zirconia (ZrO2) and alumina (Al2O3) deposited by flame spraying. A series of wear tests were carried out under a variety of loads and at two different sliding speeds. The evaluation included an examination of the coating microstructure, microhardness, coefficient of friction (COF), and wear resistance of the flame-sprayed coating. The results showed that the coatings had a perfectly structured micro-architecture and were metallurgically bonded to the substrate. The Al2O3 coating exhibited a fine granular structure with pores and oxides. The microstructure of Al2O3-10 wt.% ZrO2, on the other hand, showed a blocky structure with a uniform distribution of ZrO2 inclusions in the composite coating. X-ray diffraction (XDR) results showed that the phases in both coatings were predominantly α-Al2O3 with a minor presence of γ-Al2O3. However, in addition to residual ZrO2 in the tetragonal phase, the ZrO2-Al2O3 coating showed a predominance of ZrO2 in the monoclinic structure. To elucidate the intricacies of the wear mechanism and the characteristics of the wear debris, a comprehensive analysis of the wear performance of flame-sprayed ceramic coatings was carried out.</div>

Publisher

SAE International

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