Aluminum alloy corrosion inhibitor

Abstract

The invention belongs to the technical field of corrosion prevention of aluminum alloy. An aluminum alloy corrosion inhibitor is characterized in that: one gram of the aluminum alloy corrosion inhibitor consists of 0.05 to 0.10 microgram of potassium nitrite, 1.0 to 4.0 micrograms of calcium gluconate, 0.05 to 0.2 microgram of mercaptobenzothiazole, 0.05 to 0.2 microgram of borate and 0.05 to 0.10 microgram of hexadecane amine. The aluminum alloy corrosion inhibitor formed according to the ratio is economic, effective, low in toxicity and high in applicability, protects the original process flow from being damaged, and is the saline medium aluminum alloy corrosion inhibitor without additional equipment.

Description

[0001] [0002] Technical field: the invention belongs to the technical field of anticorrosion of aluminum alloys. [0003] Background technique: [0004] Aluminum alloy has the advantages of light weight, corrosion resistance, easy processing and high mechanical strength, which makes its application field gradually expand. For example: with the development of the ocean by humans, a large number of aluminum alloy equipment is used for marine operations; in addition, with the wide application of aluminum alloy in heat exchangers, water tanks, pipes, water pumps, containers, etc. Seawater corrosion inhibitors are required for the corrosion of metal equipment. In addition, among various refrigerants, industrial calcium chloride and sodium chloride aqueous solutions are widely used in various refrigerators and equipment and occasions that need to lower the freezing point due to their low freezing point and low price. Since industrial calcium chloride and sodium chloride aqueou...

AI Technical Summary

Problems solved by technology

However, if there are corrosion products or scale deposits on the metal surface, it is difficult to form a good corrosion inhibition film

[0007] Aiming at the problems of low corrosion inhibition rate, large dosage, some toxicity and high price of corrosion inhibitors in salt water medium at the present stage, the present invention has developed an economical, effective, low toxicity and strong applicability for the first time, and protects the original The corrosion inhibitor of aluminum alloy in brine medium without any additional equipment is not damaged, and can be widely used in various production sectors of the national economy