期刊
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
卷 93, 期 8, 页码 1152-1159出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1070427220080078
关键词
in situ synthesis; copper; corrosion inhibitors; chlorides; 3-(N-arylamino)-5-amino-1H-1; 2; 4-triazoles
资金
- Ministry of Education and Science of the Russian Federation [4.3633.2017/4.6]
- Science and Engineering Research Board (SERB, New Delhi, India) [SB/FT/CS101/2014]
A series of 3-(N-arylamino)-5-amino-1H-1,2,4-triazoles were prepared by the reaction ofS,S-dimethyl cyanodithioimidocarbamate with appropriate anilines. The inhibiting effect of the products on the corrosion of copper of M1 grade in acidic and neutral chloride-containing media was studied using electrochemical and accelerated electroless methods. The maximal degree of protection ensured by commercially available 3,5-diamino-1H-1,2,4-triazole and the synthesized 3-phenylamino, 3-(4-methylphenylamino), 3-(4-chlorophenylamino), and 3-(3-chlorophenylamino) derivatives of 5-amino-1H-1,2,4-triazole reaches 70-87%. In acid solutions, the synthesized compounds show higher performance than the 3,5-diamino derivative, ensuring up to 92-96% protection. Similar results were obtained in experiments in a salt fog chamber.
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