Z31镁合金在不同环境中的摩擦特性研究

Z31 magnesium alloy exhibits significant application potential in numerous fields such as aerospace,automobile,and new energy due to its lightweight characteristics.However,their applications are restricted in humid friction environments due to its poor wear resistance and low corrosion properties.This paper investigates the synergistic between friction and corrosion of AZ31 magnesium alloy in dry friction,pure water,and 0.5% NaCl solution.A reciprocating friction tester was employed to measure the friction coefficients under different frequencies.Combined with surface morphology analysis and electrochemical testing,the wear mechanism and the synergistic effect of corrosion was explored.Results demonstrate that under the wear-corrosion condition of low frequency(1HZ) and low load(1N),the friction in 0.5% NaCl solution promotes the growth of filamentous corrosion into the matrix;the wear increment in the process of corrosion and wear accounts for more than 85% of the interaction.