采用电化学腐蚀测试技术对钒与V-5Cr-5Ti合金在氯离子溶液中的电化学腐蚀行为进行了研究.结果表明,在50 μg/g Cl-的氯化钾溶液中,钒的腐蚀电位高于V-5Cr-5Ti合金而具有更好的热力学稳定性 ;相对于V-5Cr-5Ti合金,钒具有较大的极化电阻和较小的腐蚀电流 ;钒与V-5Cr-5Ti合金具有相似的阴极极化行为 ;在阳极极化过程中,钒主要表现为Tafel行为,而V-5Cr-5Ti合金具有“伪钝化”和钝化行为 ;二者均具有负的循环极化滞后环 ;钒的抗腐蚀性能优于V-5Cr-5Ti合金.
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