在环烷酸中影响亚磷酸三苯酯缓蚀性能的因素  

CORROSIVE INHIBITION PERFORMANCE OF TRIPHENYL PHOSPHITE IN NAPHTHENIC ACID

作　　者：高延敏[1] 戴安伦[1] 陈家坚[2] 吴维弢[2] 

机构地区：[1]江苏科技大学材料学院,镇江212003 [2]中国科学院腐蚀与防护国家重点实验室

出　　处：《石油炼制与化工》2007年第4期66-69,共4页Petroleum Processing and Petrochemicals

摘　　要：采用静态挂片和SEM方法,考察了亚磷酸三苯酯在环烷酸腐蚀体系中的缓蚀性能。结果表明,亚磷酸三苯酯具有很好的缓蚀性能,它可以在金属表面形成致密的膜,该膜在不添加缓蚀剂的情况下,在环烷酸中可以保持48h左右的耐腐蚀性能;利用扩散方程描述了膜在环烷酸中的溶解过程,并求得了相应的扩散系数(D)为1.05×10-4m2/s。The corrosive inhibition performance of triphenyl phosphite in naphthenic acid system was investigated by static strip weight-loss method and SEM technique. The test results showed that triphenyl phosphite provided excellent inhibition function in naphthenic acid corrosion system by forming a fine protected film on the metal surface. Said film could effectively suppress the corrosion of metal by naphthenic acid for 48 h without adding fresh corrosion inhibitor. The dissolution of film in naphthenic acid was discussed by diffusion equation,and a diffusion coefficient of 1.05×10^-4 m^2/s was obtained.

关 键 词：环烷酸 缓蚀剂 薄膜 

分 类 号：TE986[石油与天然气工程—石油机械设备]