植酸及植酸钙、镁、钠盐对铜在饮用水中的缓蚀研究(英文)  

The Inhibitive Effects of Phytic Acid and Ca,Mg and Na Salts of Phytic Acid on Copper Corrosion in Domestic Water

作　　者：王林[1,2] 尹建国[1,2] 

机构地区：[1]云南大学化学系 [2]昆士兰州理工大学化学系

出　　处：《云南大学学报（自然科学版）》1999年第4期275-278,共4页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：对植酸和植酸钙、镁、钠盐对铜在合成家庭饮用水中的缓蚀作用进行了研究，采用失重法，用ＩＣＰ－ＡＥＳ分析腐蚀液中的离子浓度．结果表明植酸钙、植酸镁有很好的缓蚀作用，缓蚀率可分别达到９３．７％和９２．２％．同时用ＸＰＳ对腐蚀样片的表面进行分析．The inhibition effects of phytic acid and Ca,Mg and Na salts derivations of phytic acid on copper corro sion have been studied in synthetic domestic water (SDW) (pH=6.8) containing 36.8mg·L -1 HCO 3 -,42.6mg·L -1 Cl -,76.8mg·L -1 SO 2- 4 and 100mg·L -1 ClO - at 30℃,Weight losses (by ICP AES) were made in SDW containing different levels of inhibitors from pH 6.5 to 9.2.In the presence of phytic acid or Na phytate,both inhibition and promotion of copper corrosion depend on the concentrations of inhibitors and solution pH.In any case of inhibition or promotion of copper corrosion,the surface films could be formed.As promotion corrosion,the films were formed firstly,then disolved.The inhibition efficiencies of Ca and Mg phytate saturated solutions on copper reach to 93.7% and 92.2% respectively and are better than them of phytic acid or Na salt at comparative concentrations.Surface analysis indicated the presence of Cu phytate or Cu Ca phytate films on the top of the copper oxides film.

关 键 词：植酸钙 植酸镁 植酸钠 铜 缓蚀剂 饮用水 

分 类 号：TG178[金属学及工艺—金属表面处理] TG174.42[金属学及工艺—金属学]