硫代磷酸酯缓蚀剂在金属表面成膜行为研究  

A STUDY ON THE ADSORPTION BEHAVIOR OF THIO-PHOSPHATE INHIBITOR ON THE METAL SURFACE

作　　者：张玉芳[1] 路民旭[1] 朱雅红[1] 白真权[1] 

机构地区：[1]中国石油天然气集团公司石油管材研究所,石油管力学与环境行为重点实验室,西安710065

出　　处：《中国腐蚀与防护学报》2002年第5期282-285,共4页Journal of Chinese Society For Corrosion and Protection

基　　金：中国石油天然气集团公司技术开发项目 ( 990 0 0 816- 0 4)

摘　　要：模拟环烷酸高温腐蚀环境 ,通过对自行合成的硫代磷酸酯缓蚀剂性能评价 ,利用电镜和X射线能谱分析对该缓蚀剂的吸附膜形态与结构进行了分析研究 .结果表明 :硫代磷酸酯在金属表面吸附成膜属反应沉积与吸附覆盖的共同作用 .随着腐蚀溶液中硫代磷酸酯缓蚀剂浓度增加 ,表面膜逐渐由反应沉积型转化为吸附覆盖型 .The inhibition performance and adsorption mechanism of thio -phosphate inhibitor on the carbon steel surface in high temperature naphthenic acid/white oil solution has been studied with chemical?SEM and X-ray analysis methods.It is shown that,in naphthenic acid / white oil solution,thio -phosphate can be adsorbed on the metal surface by both reacting sediment and molecules adsorbing cover .At the lower inhibitor concentration,the surface film is formed by reacting sediment type,but at higher concentration,it will be formed by adsorbing cover type.When the concentration is 1000 mg/L,the inhibition efficiency of thio -phosphate will be upon 94%.

关 键 词：硫代磷酸酯 缓蚀剂 环烷酸腐蚀 表面吸附 

分 类 号：TG174.42[金属学及工艺—金属表面处理]