# Tribocorrosion Behavior of NiCoCrMoCu Alloys Containing Different Carbides in Acidic Media at Various Applied Loads and Sliding Speeds

## TL;DR

This study examines how different carbide contents in NiCoCrMoCu alloys affect their wear and corrosion behavior in acidic environments under varying loads and speeds.

## Contribution

The paper introduces a systematic analysis of tribocorrosion behavior in NiCoCrMoCu alloys with varying carbide contents in acidic media.

## Key findings

- Tribocorrosion antagonistic effects were observed in both H2SO4 and HCl solutions.
- The wear rate reduction was more significant in H2SO4 than in HCl due to lubrication effects.
- COF depends on sliding speed, while wear rate depends on load and sliding speed.

## Abstract

In this study, the ball-on-disk sliding wear and tribocorrosion behavior in the H2SO4 and HCl solution of NiCoCrMoCu alloys with carbon additions of 0.2, 1, 1.5, and 2 wt.% with the Al2O3 ball as a counterpart was investigated systematically. Obvious tribocorrosion antagonistic effects were found after wear in both aqueous solutions. Compared with dry sliding wear conditions, the lubrication effect of the aqueous solution significantly reduces the wear rate of the alloy, and the reduction effect in the H2SO4 aqueous solution was more obvious than that in HCl. The antagonistic effects of the 0.2C and 1C alloys decrease with the load and sliding rate, while those of the 1.5C and 2C alloys increase. The (coefficient of friction) COF and wear rate under different loads and sliding rates were analyzed using the response surface analysis (RSM) method. It was found that the COF mainly showed dependence on the sliding rate, while the wear rate showed dependence on load and sliding speed.