钼酸钠-磷酸盐对碳钢的协同缓蚀作用机理  

Synergistic Effect and Inhibition Mechanism of Molybdate-Phosphate for Carbon Steel

作　　者：郭良生[1] 黄霓裳[1] 余兴增[1] 

机构地区：[1]中国科学院福建物质结构研究所二部,厦门361012

出　　处：《材料保护》2000年第2期39-40,共2页Materials Protection

摘　　要：采用失重法、表面观察法、极化曲线法、氢离子刻蚀法和ＸＰＳ分析法研究钼酸钠－磷酸盐在自来水中对碳钢的协同缓蚀效应与作有理。结果发现：５０％钼酸钠＋５．０％磷酸盐（ＸＭ－２０２）在自来水中对碳钢具有明显的协同缓蚀效应。５０％钼酸钠＋５０％磷酸盐（ＸＭ２０２－）主要是阴极抑制型缓蚀剂。缓蚀膜主要是沉积膜，膜层的主要组份有Ｚｎ３（ＰＯ４）２、Ｆｅ－ＰＯ４、Ｆｅ２Ｏ３、ＭｏＯ２和 Ｎ［ＣＨ２ＣＨ２ＯＰＯ（ＯＨ）２］３等。The synergistic effect and inhibition mechanism of Molybdate-phosphate for carbon steel in tap water were studied by means of weight loss, surface observation polarization curves, argon ion sputtering and XPS. the results revealed that 50% molybdate + 50% phosphate (XM - 202) had obvious synergistic inhibition effect on carbon steel in sea water.' 50% molybdate + 50% phosphate' mainly was a ca- thodic inhibition. The inhibition film consisted of Zn3 (PO4) 2, FePO4, FeZO3, MoO2 and N [CH2CH2OPO (OH)2]3 was mainly a precipitation film.

关 键 词：缓蚀剂 钼酸钠 缓蚀机理 磷酸盐 碳钢 

分 类 号：TG174.42[金属学及工艺—金属表面处理] TG174.2[金属学及工艺—金属学]