Antiwear additives as retarding agents of elements with ceramic coatings wear

Abstract

Purpose

The purpose of this paper is to determine the appropriate conditions for the chemical deposition of Ni‐P‐Al₂O₃ composite coatings, deposited on metalic matrix.

Design/methodology/approach

Auto catalytic reduction of Ni in nickel sulfate and sodium hypophosphate bath, including 10 percent volume fractions of nanodispersive Al₂O₃ particles is treated in the alloy steel 100Cr6. The wear resistance and friction coefficient of the coatings are determined using tester T‐01M, a ball‐disc tester for mitigated solid friction conditions, in model lubricants: oil bases, oil bases with antiwear additives AW.

Findings

The analysis of the properties of the Ni‐P‐Al₂O₃ deposits confirms that the presence of the dispersion phase of aluminium oxide determines the coating wearability.

Practical implications

The paper presents some indications of proper selection of antiwear coating generation methods (their parameters and conditions).

Originality/value

Investigations show that tribocatalytic effect of nickel coatings influence the intensity of antiwear layers generation in zinc dialkyldithiophosphates (ZDDP) tribochemical interaction in model lubricants and that tribochemical, adsorption, and reaction‐diffusion effect of ZDDP, decided on great effectiveness of generated antiwear surface layers, which was confirmed by the results of tribological investigation.

Citation

Ozimina, D., Madej, M. and Styp‐Rekowski, M. (2010), "Antiwear additives as retarding agents of elements with ceramic coatings wear", Industrial Lubrication and Tribology, Vol. 62 No. 5, pp. 275-278. https://doi.org/10.1108/00368791011064428