界面活性剤の合成および性能に関する研究 (第7報)
陽イオン界面活性剤の酸洗抑制能に関する研究
1963 年 12 巻 6 号 p. 365-371
詳細
1963 年 12 巻 6 号 p. 365-371
The “Pickling” of steel or iron comprises removal of metal oxide on the surface by immersion in an acid. It has been found that the addition of cationic surface active agents (CSA) which have been called “Inhibitor” to acid decreases the rate of corrosion.
In order to study the relationship between chemical construction of CSA and corrosion inhibitive property, various CSA were tested.
CSA containing I-anion, was superior to others in inhibitive characteristics and luster after acid-cleaning. This comes from the action of HI formed by the double decomposion. of CAS and acid for cleaning. Same results were obtained in case using CSA together with HI.
There has been no CSA that was effective in H3PO4, but the addition of HI when used together with CSA was greatly effective.
Chemical construction of cationic parts of CSA did not so affect as were anionic parts.
