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采用恒电位测试方法研究了当载荷范围为5~20 N、电位范围为–0.6~0.3 V时镍基合金K4169/氧化铝陶瓷球摩擦副在人工海水中的腐蚀磨损行为,并根据试验数据获得了K4169合金的腐蚀磨损图(总损失图、磨损机理图和交互作用图).结果表明:K4169合金在室温下的人工海水中有良好的耐腐蚀性能,腐蚀速率为0.004 2 mm/a;磨损量Wc为总损失量T值的87.1%~96.8%,表明腐蚀磨损中K4169合金的损失以机械磨损为主,腐蚀损失量Cw很小.以ΔCw/ΔWc为判据可知:协同作用、加和作用和对抗作用均存在于K4169合金在人工海水的腐蚀磨损中.
The corrosion and wear behavior of Ni-based alloy K4169 / alumina ceramic ball friction pair in artificial sea water was investigated by potentiostatic test at a load range of 5-20 N and a potential range of -0.6-0.3 V, and based on the experimental data The corrosion wear diagram of K4169 alloy (total loss diagram, wear mechanism diagram and interaction diagram) shows that K4169 alloy has good corrosion resistance in artificial seawater at room temperature with an erosion rate of 0.004 2 mm / a; wear The amount Wc is 87.1% ~ 96.8% of the total loss T value, which indicates that the wear of K4169 alloy is dominated by mechanical wear and the corrosion loss Cw is very small.With ΔCw / ΔWc as criterion, it can be known that the synergistic effect, The role and antagonism exist in the corrosive wear of K4169 alloy in artificial seawater.