Pitting Corrosion Behavior of Sintered SUS444 Stainless Steel in MgCl2 Solution
Pitting Corrosion Behavior of Sintered SUS444 Stainless Steel in MgCl2 Solution
复制标题
烧结SUS444不锈钢在MgCl2溶液中的点蚀行为
DOI：
10.4028/www.scientific.net/msf.539-543.3255
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
K. Majima
中科院分区：
文献类型：
--
作者：
S. Sunada;Y. Miyazaki;K. Majima
研究了孔隙率分别为13.3%、9.11%和6.88%的烧结态SUS 444不锈钢（P/M试样）在MgCl 2水溶液中的点蚀行为，并与常规处理态SUS 444不锈钢（I/M试样）进行了比较。孔蚀电位随孔隙率的增加而线性下降，且I/M试样的孔蚀起始抗力最好。扫描电镜观察的点蚀形貌表明，孔隙率大的试样上出现的小点蚀坑较多，孔隙率小的试样上出现的小点蚀坑数量较少，但直径较大; I/M试样上的点蚀坑数量最少，但最大、最深。
The pitting corrosion behavior of sintered SUS 444 stainless steels (P/M specimens) with different kinds of porosity ratios of 13.3, 9.11 and 6.88 % was studied in an aqueous solution containing MgCl2 compared with a conventionally processed SUS 444 stainless steel(I/M specimen). The pitting corrosion potential decreased almost linearly as porosity ratio increased, and the I/M specimen showed the best resistance against the initiation of pitting corrosion. The pitting corrosion morphology by SEM observation showed that more small pits were observed on the specimen with larger porosity ratio while less number but larger diameter pits were observed on the specimen with smaller porosity ratio, and it was also confirmed that the I/M specimen had the least number but the largest and deepest pits.