表面技术2017，Vol.46Issue(2)：27-32,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.02.004
单宁酸复配缓蚀剂在铁质文物上的应用研究
Application of Modified Tannic Inhibitor in the Iron Relics
摘要
Abstract
The work aims to make up the shortcomings of the single tannic inhibitor through modification, so as to improve its corrosion-inhibition efficiency on the iron relics. The inhibition efficiency of the tannic acid and its modified inhibitor on five kinds of simulated iron relic samples was compared and evaluated through the weight loss experiment, SEM-EDS and potenti-odynamic polarization method. These inhibitors were applied for tests on the iron relics. The modified tannic inhibitor had ex-cellent inhibition effect to the low sulfur cast iron, slightly lower for the high sulfur cast iron in the corrosion system of 3.5% NaCl aqueous solution. The inhibition film layer was uneven and unstable after inhibited by tannic acid, but homogeneous and stable after inhibited by modified tannic inhibitor. The passivation of the samples occurred due to the improved formula of tan-nic acid containing sodium silicate, zinc dihydrogen phosphate and ethanolamine. Its corrosion current was greatly lower than those of the non-inhibitor solution and tannic acid. The practical application results showed that the iron relics treated with mod-ified tannic inhibitor had better corrosion resistance than those treated with tannic acid. The modified tannic inhibitor has solved the problem that the acidity of tannic acid potentially impacts the iron relics, overcome the shortage of incomplete and unstable thin film made by the tannic acid, and of changing the appearance color of cultural relics, and greatly improved the inhibition ef-ficiency.关键词
单宁酸/单宁酸复配缓蚀剂/铁质文物Key words
tannic acid/modified tannic inhibitor/iron relics分类
矿业与冶金引用本文复制引用
张治国,马清林..单宁酸复配缓蚀剂在铁质文物上的应用研究[J].表面技术,2017,46(2):27-32,6.基金项目
国家科技支撑计划资助(2006BAK20B03)Supported by National Science and Technology Support Project(2006BAK20B03) （2006BAK20B03）
