钼酸钠对铝在磷酸中的缓蚀作用  

Inhibitive action of sodium molybdate on aluminium in phosphoric acid

作　　者：木冠南[1] 周俊[1] 李向红[1] 屈庆[1] 

机构地区：[1]云南大学化学系,云南昆明650091

出　　处：《清洗世界》2004年第12期1-3,共3页Cleaning World

基　　金：国家自然科学资金资助项目(50261004)

摘　　要：通过失重法和动电位极化曲线法研究了钼酸钠对铝在1mol/L磷酸溶液中的缓蚀作用。结果表明在磷酸溶液中,钼酸纳对铝有着良好的缓蚀作用,其缓蚀机理主要是抑制阳极反应;并用乔姆金吸附等温式探讨了钼酸纳在铝表面的吸附及其缓蚀作用。Theeffectivenessofsodiummolybdateasacorrosioninhibitorwasinvestigated bymeasuring corrosion weight losses and polarization curves of aluminum in 1 mol· L-1 phosphoric acid. The corrosion of aluminum was inhibited in accordance with the Temkin adsorption isotherm of sodium molybdate on the aluminum. The adsorption was believed to bea chemical adsorption resulting from the inhibition effect increasing as temperature increased. The inhibitor was mainly of anodic type.

关 键 词：磷酸 钼酸钠 并用 阳极反应 动电位极化曲线 缓蚀作用 表面 酸溶液 缓蚀机理 失重法 

分 类 号：TQ314.11[化学工程—高聚物工业] TG174.42[金属学及工艺—金属表面处理]