Effect of Bias Voltage on Microstructure and Mechanical Properties of Nanocomposite AlCrN/TiSiN Coatings
Multi-layer AlCrN/TiSiN composite coatings with functional layer biases of 40V,80V,120V,and 150V are prepared by arc ion plating+HiPiMS technology.Surface droplets are observed by SEM,coating hardness,coating adhesion and stress are measured,and cutting tests are conducted to explore the impact of functional layer bias changes on coating performance.It is found that as the bias voltage of the functional layer increases,the number of droplets decrease first and then increase,with the hardness and adhesion increase and then decrease.The hardness and adhesion reach their maximum at 120V,reaching 34.6GPa and 117.5N respectively.The internal stress increases with the increase of substrate bias of the functional layer.The cutting test results show that the longest service life is 8 hours with the 120V functional layer bias.
万方数据
维普
