最先研究钝化现象的是法拉第, 当时他从事的 是钢铁腐蚀和防护问题的研究

The first to study the phenomenon of passivation is Faraday, when he was engaged in research and steel corrosion protection issues. In the course of the study, he found that when the Faraday iron into concentrated nitric acid (70%) of the inside, concentrated nitric acid do not react with iron, and the iron into dilute nitric acid, it is easy to react vigorously and the reaction .

The first to study passivation was Faraday, who was working on steel corrosion and protection. In the course of his research , Faraday found that when he put the iron block in the thick nitric acid ( 70 % ) , iron and concentrated nitric acid did not react , and put the iron block into the dilute nitric acid , it is very prone to reaction and violent reaction .

Faraday was the first to study passivation. At that time, he was engaged in the research of steel corrosion and protection. During the research, Faraday found that when he put iron into concentrated nitric acid (70%), iron did not react with concentrated nitric acid, but when he put iron into dilute nitric acid, it was easy to react and the reaction was violent.<br>