著者

能登谷 武紀

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.27, no.12, pp.661-670, 1978-12-15 (Released:2009-10-30)

参考文献数

130

被引用文献数

17 15

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This article is a review of recent literature on corrosion inhibitors for copper and copper alloys. Inhibitors are divided into two categories; (i) inorganic inhibitors, such as chromates, phosphates, and ferrous ions and (ii) organic inhibitors which include heterocyclic organic compounds, i. e., benzotriazole (BTA) and mercaptobenzothiazole (MBT) and their relative compounds. At present these are the most effective and widely used inhibitors in a variety of systems. The BTA derivatives such as tolyltriazole (TTA) and benzotriazole carboxylic acid will be the most promising inhibitors for copper and copper alloys. It is suggested that dimercaptothiadiazole (DMTDA) and triazinedithiol (TDT) and its derivatives may be used as a substitute of BTA. Effectiveness of both DMTDA and TDT is found to be better than BTA in some corrosive environments. Significant role of oxide films present on the metal surfaces is stressed in order to clarify the mechanism of protection performance of inhibitors. Long chain thio-compounds as film forming inhibitors are also described