ACID CORROSION-RESISTANCE OF BOILER STEELS

被引：0

作者：

HUYBREGTS, W

机构：

来源：

MATERIALS PERFORMANCE | 1977年 / 16卷 / 05期

关键词：

STEEL CORROSION - Boilers;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Four layer scales are noticed generally on corroded boiler tubes: (1) a porous ″sponge″ of oxide particles, (2) a salt layer (e. g. , sulfates, silicates), (3) a so-called top layer of more compact magnetite, and (4) a very laminated oxide crust. The salt and top layer create an occluded cell in which corrosive electrolytes can be concentrated. In case of condensor inleakages of sea water or acid forming river water, hydrochloric acid or ferrous chloride is present in the occluded cells. The acid corrosion resistance of 60 steel samples of different chemical composition was tested in autoclave experiments with ferrous chloride solution of various concentrations.

引用

页码：23 / 27

页数：5