High-temperature tribological properties of Ni-P alloy coatings deposited by electro-brush plating
来源期刊：Rare Metals2011年第6期
论文作者：LI Zhiminga, QIAN Shiqianga, WANG Weia, SHEN Hongweib, and LONG Hesunb a College of Material Engineering, Shanghai University of Engineering Science, Shanghai , China b Shanghai Electric Power Generation Equipment Co., Ltd. Turbine Works, Shanghai , China
文章页码：669 - 675
摘 要：High-temperature tribological properties of Ni-P alloy coatings processed by electro-brush plating on 20CrMo steel have been investigated. A ball-on-disc configuration was employed and 4 mm diameter Si3N4 balls were used as static counterpart. All the wear tests were carried out at 450°C for 180 min without lubricants. The electro-brush plating Ni-P coating is amorphous in as-deposited condition, and it becomes polycrystalline with the formation of Ni and Ni3P after heat treatment at 450°C for 1 h. The friction coefficient of the Ni-P coating is just 50% of that of the 20CrMo steel at the friction temperature of 450°C. A mild adhesive wear mechanism was found for the electro-brush plating Ni-P coating tested at 450°C, whereas for the 20CrMo steel at the same temperature a mixed adhesive and abrasive wear mechanism was observed.
LI Zhiminga, QIAN Shiqianga, WANG Weia, SHEN Hongweib, and LONG Hesunb a College of Material Engineering, Shanghai University of Engineering Science, Shanghai 201620, China b Shanghai Electric Power Generation Equipment Co., Ltd. Turbine Works, Shanghai 200240, China
摘 要：High-temperature tribological properties of Ni-P alloy coatings processed by electro-brush plating on 20CrMo steel have been investigated. A ball-on-disc configuration was employed and 4 mm diameter Si3N4 balls were used as static counterpart. All the wear tests were carried out at 450°C for 180 min without lubricants. The electro-brush plating Ni-P coating is amorphous in as-deposited condition, and it becomes polycrystalline with the formation of Ni and Ni3P after heat treatment at 450°C for 1 h. The friction coefficient of the Ni-P coating is just 50% of that of the 20CrMo steel at the friction temperature of 450°C. A mild adhesive wear mechanism was found for the electro-brush plating Ni-P coating tested at 450°C, whereas for the 20CrMo steel at the same temperature a mixed adhesive and abrasive wear mechanism was observed.
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