为开发适用于循环冷却海水/不锈钢体系的绿色缓蚀剂,采用电化学阻抗谱、极化曲线及表面腐蚀形貌分析,研究了聚环氧琥珀酸(PESA)、Na2MoO4在模拟2倍浓缩海水中对304不锈钢的缓蚀作用。结果表明:在模拟2倍浓缩海水中,PESA与Na2MoO4均能在304不锈钢表面形成保护膜,产生缓蚀作用;PESA为阳极吸附型缓蚀剂,单独使用时缓蚀效果有限;Na2M004为阳极沉淀膜型缓蚀剂;2种缓蚀剂同时作用,对抑制304不锈钢点蚀能够产生明显的协同增效作用,模拟2倍浓度海水中含100mg/LPESA和10mg/L Na2MoO4时,304不锈钢点蚀击穿电位比只含100ms/LPESA时提升了约120mV。
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