Effect of Surface Roughness on the Corrosion Behavior of 304 Stainless Steel in Seawater

被引：0

作者：

Liu, Xuehui ^{[1
,2
]}

Zhang, Huixia ^{[1
,2
]}

Tong, Hongtao ^{[1
,2
]}

Sui, Yongqiang ^{[1
,2
]}

Li, Xiangbo ^{[1
,2
]}

Hou, Jian ^{[1
,2
]}

机构：

[1] Natl Key Lab Marine Corros & Protect, Qingdao 266237, Shandong, Peoples R China

[2] Luoyang Ship Mat Inst, 37 Wenhai Middle Rd, Qingdao 266237, Shandong, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2024年

关键词：

passive film; pitting potential; 304 stainless steel; surface roughness; x-ray photoelectron spectroscopy; STAINLESS-STEEL; PASSIVE FILM; PITTING CORROSION; RESISTANCE; TEMPERATURE;

D O I：

10.1007/s11665-024-10527-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, three different average surface roughness (Ra ) (0.023 mu m, 0.143 mu m and 0.334 mu m) were used to study the effect of surface roughness on the pitting behavior of 304 stainless steel. It was characterized by electrochemical and surface analytical methods. The specimen with Ra of 0.023 mu m showed higher corrosion resistance. With the increase of Ra, the pitting potential (Ep) decreased linearly, while the donor density (ND) of passive film on the surface of 304 stainless steel increased linearly. The smooth surface of 304 SS reduced the risk of pitting corrosion by increasing the Cr/Fe atomic ratio in the passive film. Accordingly, the pitting corrosion resistance was enhanced as surface roughness decreased.

引用

页数：11

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