The RE Compound Using in Corrosion Inhibitor of Copper Alloy

Based on neutral salt spray test and variance analysis, the RE salt compound using in the corrosion inhibitors of copper alloy has been studied. Synergistic effects among the RE salt, benzotriazole and sulfosalicylic acid were conducted through two orthogonal experiments. The results shows that the passive film has a better corrosion resistance after added RE salt,the synergistic effect is obvious in combined copper corrosion inhibitor.