The pickling process of hot rolled ferritic stainless steel in sulfuric acid and nitric acid solution

被引：0
|
作者：
Tsuchinaga, M [1 ]
Abe, S [1 ]
机构：
[1] Nippon Steel Corp Ltd, Yawata R&D Lab, Tobata Ku, Kitakyushu, Fukuoka 8048501, Japan
来源：
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 2006年 / 92卷 / 01期
关键词：
stainless steel; pickling; dissolution rate; grain boundary corrosion; sulfuric acid; nitric acid; Cr depleted zone; P segregation; grain boundary;
D O I：
10.2355/tetsutohagane1955.92.1_10
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The removal of scales on hot rolled and annealed stainless steel coils is achieved only by the dissolution of matrix metal in the pickling process where the commercial pickling solution for Type 430 stainless steels is the sulfuric acid solution. It was found that the addition of nitric acid to the sulfuric acid solution increased the dissolution rate of the matrix metals 2 to 4 times. Also, the addition of nitric acid to the pickling sulfuric acid solution improved the surface smoothness by the decrease of grain boundary corrosion due to the segregation of P.
引用
收藏
页码：10 / 15
页数：6
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