N-烃基-α-氨基苯亚甲基膦酸在不同pH值条件下对A_3钢的缓蚀性能研究

Study on character of N-alkyl-α-amino benzylidene phosphonic acid inhibiting corrosion for A_3 steel under different pH medium

研究了以苯甲醛、水杨醛系列化合物合成的10 种含烃基取代的α-氨基苯亚甲基膦酸(NAABP)对A3 钢在不同pH值条件下的缓蚀性能,试验结果表明:这种取代的含芳环的膦酸在碱性介质中对A3 钢是有效的缓蚀剂,这种抑制腐蚀的过程实际上是阴极钝化过程,NAABP是一种阴极型的缓蚀剂.

Character of N Alkyl α amino benzylidene phosphonic acid inhibiting corrosion for A 3 steel under different pH medium has been investigated. Result shown that the substitute phosphonic acid containing benzyl group is an effective corrosion inhibitor for A 3 steel in basic medium.