Effect of Y₂O₃ addition on microstructure and friction-wear performances of laser cladded CrNi coatings on AISI H13 steel

Abstract

Purpose

This paper aims to analyze the effect of Y₂O₃ mass fraction on the tribological performance of CrNi coating, which solved the problem of wear resistance on AISI H13 steel.

Design/methodology/approach

Y₂O₃ reinforced CrNi coatings were fabricated on AISI H13 steel. The microstructure and phases of obtained coatings were analyzed using a super-depth of field microscope and X-ray diffraction, respectively, and the effects of Y₂O₃ mass fraction on the microstructure and wear resistance were methodically investigated using a wear tester.

Findings

The average coefficients of friction and wear rates of Y₂O₃ reinforced CrNi coatings decrease with the increase of Y₂O₃ mass fraction, in which the Y₂O₃ plays a role of friction reduction and wear resistance. The wear mechanism of Y₂O₃ reinforced CrNi coating is primary abrasive wear, accompanied by adhesive wear, which is contributed to the grain refinement and dense structure by the Y₂O₃ addition.

Originality/value

The Y₂O₃ was added to the CrNi coating by laser cladding, and the effect mechanism of Y₂O₃ mass fraction on the tribological performance of CrNi coating was established by the wear model.

Citation

Wei, L. and Dejun, K. (2022), "Effect of Y₂O₃ addition on microstructure and friction-wear performances of laser cladded CrNi coatings on AISI H13 steel", Industrial Lubrication and Tribology, Vol. 74 No. 2, pp. 282-289. https://doi.org/10.1108/ILT-10-2021-0426