Inhibition action of benzimidazole and benzitriazole on 12Kh18N10T steel corrosion in sulfuric acid

Rate of 12Kh18N10T steel corrosion in working solutions is determined and protection action of benzimidazole (BIA) and benzotriazole (BTA) heteroaromatic additions is calculated. Stainless steel does not practically corrode in 5% H2SO4 and protection action of BIA and BTA does not manifest itself. In pure 20% acid R=3.5 g/(m2·h), while with additions of BIA and BTA - 2.5 and 0.008 g/(m2·h) that corresponds to protection degree equal to 31.25 and 99.44% at 5% concentration of BIA the rate of corrosion is equal to 07006 g/(m2·h)