Influence of Al 2O 3 reinforcement on the abrasive wear characteristic of Al 2O 3/PA1010 composite coatings

Abstract

In the present study, the abrasive wear characteristics of Al 2O 3/PA1010 composite coatings were tested on the turnplate abrasive wear testing machine. Steel 45 (quenched and low-temperature tempered) was used as a reference material. The experimental results showed that when the Al 2O 3 particles have been treated with a silane coupling agent (γ-aminopropyl-triethoxysilane), the abrasive wear resistance of Al 2O 3/PA1010 composite coatings has a good linear relationship with the volume fraction of Al 2O 3 particles in Al 2O 3/PA1010 composite coatings and the linear correlation coefficient is 0.979. Under the experimental conditions, the size of Al 2O 3 particles (40.5–161.0 μm) has little influence on the abrasive wear resistance of Al 2O 3/PA1010 composite coatings. By treating the surface of Al 2O 3 particles with the silane coupling agent, the distribution of Al 2O 3 particles in PA1010 matrix is more homogeneous and the bonding state between Al 2O 3 particles and PA1010 matrix is better. Therefore, the Al 2O 3 particles make the Al 2O 3/PA1010 composite coatings have better abrasive wear resistance than PA1010 coating. The wear resistance of Al 2O 3/PA1010 composite coatings is about 45% compared with that of steel 45.