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CN105369256B 一种在汽车冷却液中的镁合金缓蚀剂及其应用 失效 - 权利终止

一种在汽车冷却液中的镁合金缓蚀剂及其应用
摘要：
本发明涉及金属材料防腐技术领域，具体涉及一种在汽车冷却液中的镁合金缓蚀剂。该镁合金缓蚀剂采用磷酸氢二铵和木质素磺酸钠以1:1复配。本发明采用有机和无机物复配，利用缓蚀物质间的协同效应，其在25℃下电化学性能测试证明缓蚀效率高达93.16%。由于木质素磺酸钠是一种价格低、来源广泛、无污染的有机物，与无机物磷酸氢二铵进行有机和无机物复配，有良好的协同效应。此复配型缓蚀剂在常温和高温时都有良好的缓蚀效果：在25℃下电化学性能测试证明缓蚀效率高达93.16%，在88℃下电化学性能测试证明缓蚀效率高达99.38%。对镁合金在汽车冷却液中具有优异的耐腐蚀性能。
摘要（英）：

The invention relates to the technical field of corrosion prevention of metal materials, in particular to a magnesium alloy corrosion inhibitor in car cooling liquid. According to the magnesium alloy corrosion inhibitor, diammonium hydrogen phosphate and sodium lignin sulfonate are adopted to be compounded according to the proportion of 1:1. Organic matter and inorganic matter are compounded, and by means of the synergistic effect of corrosion inhibition matter, it is proven that the corrosion inhibition efficiency reaches up to 93.16% through an electrochemical performance test at the temperature of 25 DEG C. Due to the fact that sodium lignin sulfonate is organic matter low in price, wide in source and free of pollution, sodium lignin sulfonate and organic matter of diammonium hydrogen phosphate are subjected to organic matter and inorganic matter compounding, and the good synergistic effect is achieved. The compounded corrosion inhibitor has the good corrosion inhibition effect at normal temperature and high temperature, it is proven that the corrosion inhibition efficiency reaches up to 93.16% through the electrochemical performance test at the temperature of 25 DEG C, and it is proven that the corrosion inhibition efficiency reaches up to 99.38% through an electrochemical performance test at the temperature of 88 DEG C. The corrosion inhibitor has excellent corrosion resistance in the car cooling liquid for magnesium alloy.

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