植酸在金属防腐中的应用研究  

Application of non-toxic phytic acid in metal protection

作　　者：刘泓[1] 沈月敏[1] 

机构地区：[1]上海师范大学化学系,上海201418

出　　处：《应用化工》2009年第11期1701-1702,共2页Applied Chemical Industry

摘　　要：用失重法研究了植酸对金属的阻蚀性。分别以0.1 mol/L HCl、0.1 mol/L NaCl或0.1 mol/L NaOH为介质,配置不同植酸浓度的(空白自来水,0.5%,1%,1.5%,2%)溶液,并与相同介质下1.5%亚硝酸钠或1.5%磷酸二氢锌的溶液相比较。实验表明,对于铝、锌和铁三种金属,植酸对铝的防腐率最为显著,其中尤以植酸在NaCl介质中对铝的防腐性能最优,最佳防腐浓度为0.5%;对于锌、铁,防腐作用最佳的是空白自来水介质的1.5%磷酸二氢锌钝化液。The application of phytic acid in metal protection was researched by weight-loss method. Using 0. 1 mol/L HC1, 0. 1 mol/L NaCI or 0. 1 mol/L NaOH respectively as the medium, different concentrations of phytic acid （ blank water, 0.5%, 1%, 1.5% , 2% ） were prepared, compared with the solution of 1.5 % NaNO2 or 1.5 % Zn （H2PO4 ）2. The result of the experiment is as follows：for A1, Zn and Fe, the corrosion rate of phytic acid to AI is the best, and its best media is NaCl,the best concentration is 0.5%. For Zn and Fe, its best media is 1.5% Zn（H2PO4） 2 of blank water.

关 键 词：植酸 金属 防腐 

分 类 号：TG178[金属学及工艺—金属表面处理]