In order to enhance the wear resistance of gun steel surface,hard Cr coating and soft Cr/hard Cr coating were deposited on the gun steel surface by arc ion plating technology.Scanning e-lectron microscope,energy dispersive spectrometer and X-ray diffractometer were used to character-ize the microscopic morphology,composition and phase composition of the gun steel and coatings.The results showed that,in terms of hardness and abrasion resistance,both the hard Cr coating and the soft Cr/hard Cr coating showed significant improvement over the gun steel and higher H/E and H3/E2 values.The gun steel showed the highest abrasion,followed by the hard Cr coating,while the soft Cr/hard Cr coating showed the lowest wear.The wear of the gun steel were mainly from adhe-sive and abrasive wear,the wear of the hard Cr coating from slight oxidative and abrasive wear,and the wear of the soft Cr/hard Cr coating from adhesive,abrasive and oxidative wear.
gun steelCr coatingarc ion platingfriction and wear
万方数据
维普
