DECLINE OF CORROSION RESISTANCE BY Cr-DEPLETION LAYER IN SUS 304 STAINLESS STEEL.

被引：0
|
作者：
Ogushi, Tetsutaro [1 ]
机构：
[1] Nippon Kinzoku Co, Technical, Research & Development Lab,, Tokyo, Jpn, Nippon Kinzoku Co, Technical Research & Development Lab, Tokyo, Jpn
来源：
| 1600年 / 34期
关键词：
PICKLING;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
When stainless steels are annealed in a gas burning furnace to form a surface oxide scale enriched in Cr, a Cr depletion zone is generated due to the delay of Cr diffusion from the matrix to the surface. Therefore, insufficient pickling causes lower corrosion resistance. After pickling, a depth-profile of Cr and corrosion resistance against Cl** minus ion were measured. Surface Cr concentration and corrosion resistance increased with increasing pickling time. It is concluded that a pickling time of 35-45 sec is suitable.
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