304不锈钢表面复合硅烷膜的制备及其耐蚀性能  

Preparation and corrosion resistance of composite silane film on the surface of 304 stainless steel

作　　者：宋健 刘耀倩 杨光 海中 周家栋 王昌松 SONG Jian;LIU Yaoqian;YANG Guang;HAI Zhong;ZHOU Jiadong;WANG Changsong(State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China)

机构地区：[1]南京工业大学化工学院材料化学工程国家重点实验室

出　　处：《南京工业大学学报（自然科学版）》2020年第1期67-73,共7页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家重点基础研究发展规划(973计划)(2013CB733503);江苏高校优势学科建设工程(PAPD)

摘　　要：本文利用1,2双(三乙氧基硅基)乙烷(BTSE)和1H,1H,2H,2H全氟癸基三氯硅烷(FDTS)两种硅烷自组装修饰304不锈钢表面,制备BTSE、FDTS硅烷膜和BTSE FDTS复合硅烷膜。通过原子力显微镜(AFM)、X线能谱分析(EDS)和静态接触角(WCA)对样品进行表征。实验表明:与单层BTSE和FDTS硅烷膜相比,BTSE FDTS复合硅烷膜厚度更大(平均厚度为30 nm),F元素分布均匀且更致密,疏水性更强,静态接触角达到120°。极化曲线和加速腐蚀试验表明BTSE FDTS复合硅烷膜的抗腐蚀性能优于单层硅烷膜和未修饰的不锈钢。与未修饰的不锈钢相比,复合硅烷膜的缓蚀效率达到84.2%,腐蚀损失率减少72.8%。1H,1H,2H,2H-perfluorodecyltrichlorosilane(FDTS),1,2-bis(trimethylsilyl)ethane(BTSE)and FDTS-BTSE composite films were prepared on 304 stainless steel surface.The samples was characterized by atomic force microscope(AFM),energy dispersive X-ray spectroscopy(EDS)and water contact angle(WCA).Results showed that the thickness average was 60 nm with the uniformity and compactness of F element distribution,and the hydrophobicity(WCA up to 120°)of the FDTS-BTSE composite silane film was higher and better than that of the only BTSE or FDTS.The polarization curves and accelerated corrosion tests proved that the corrosion resistances on the composite silane film surface were more apparent than these on the single film or the untreated 304 stainless steel.Comparing with these of the untreated 304 stainless steel,the corrosion inhibition efficiency of the composite silane film was increased by 84.2%,and the corrosion weight loss rate was reduced by 72.8%.

关 键 词：复合硅烷膜 1H 1H 2H 2H全氟癸基三氯硅烷 1 2双(三乙氧基硅基)乙烷 耐腐蚀性 

分 类 号：TQ638[化学工程—精细化工]