Aluminum alloy low temperature anticorrosion protection agent and anticorrosion method

Abstract

The present invention relates to an aluminum alloy low temperature anticorrosion protection agent and an anticorrosion method. The aluminum alloy low temperature anticorrosion protection agent comprises 2-mercaptobenzothiazole (MBT), 2-mercaptobenzimidazole (MBI), 2-mercaptobenzoxazole (MBO), benzotriazole (BTA), a lubricant and a surfactant, wherein a weight ratio of the MBT to the MBI to the MBO to the BTA is 2.5:1:0.5:1.

Description

Technical field [0001] The invention belongs to the field of anticorrosives, and particularly refers to a low-temperature anticorrosion protective agent and anticorrosion method for aluminum alloy surface. Background technique [0002] Metal corrosion is widespread in various fields of the national economy and national defense construction, and the harm is very serious. First, corrosion can cause significant direct or indirect economic losses. According to the statistics of industrially developed countries [5], the economic losses caused by corrosion accounted for about 1.5% -4.2% of the GDP of the year. Secondly, metal corrosion, especially stress corrosion and corrosion fatigue, often cause catastrophic major accidents and endanger personal safety. Moreover, corrosion not only consumes a large amount of metal, but also wastes a lot of energy, which consumes 10%-20% of metal every year due to corrosion. In addition, in the industrial production of petroleum, chemical industry...

AI Technical Summary

Problems solved by technology

However, corrosion inhibitor technology has obvious limitations. In the liquid medium where corrosion inhibitors are most widely used, corrosion inhibitors must have a certain solubility and must reach a certain concentration.

Traditional corrosion inhibitors have polluted the environment due to their high toxicity; at the same time, due to the small amount of corrosion inhibitors used, small changes in the outside world will have a greater impact on the system, which also brings new challenges to the study of corrosion inhibition mechanisms. These factors have limited the further development of corrosion inhibitors