In order to effectively inhibit the corrosion of leveling steel gasket on railway bridge under the action of many factors,through on-site research and analysis,the gas multicomponent diffusion technology is selected to modify the leveling steel gasket action surface,and electrochemical electric test is carried out for the treated leveling steel gas-kets.The electrochemical test results showed that the self-corrosion potential is up to-0.484 5 V and the self-corro-sion current density is as low as 1.187×10-6 mA.Using the process program including furnace temperature of 640℃,ammonium chloride flow rate of 4.4 mL/min,ammonia flow rate of 0.9 mL/min,the leveling steel gasket surface is modificated and treated,and trial service test is carried out.Trial service test shows that after treatment of the leveling steel gasket,there is no any rust point on its contact surface,the penetration layer is relatively complete,and its con-tact surface corrosion resistance is significantly enhanced.
Railway BridgeLeveling Steel GasketCorrosion ProtectionGas Multicomponent Diffusion Process
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