Effect of temperature change rate on the critical pitting temperature for duplex stainless steel

被引：9
|
作者：
Zhang, Lihua [1 ]
Jiang, Yiming [1 ]
Deng, Bo [1 ]
Sun, Daoming [1 ]
Gao, Juan [1 ]
Li, Jin [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2009年 / 39卷 / 10期
基金：
中国国家自然科学基金; 上海市科技启明星计划; 中国博士后科学基金;
关键词：
Duplex stainless steel; Pitting corrosion; Critical pitting temperature; Temperature change rate; The point defect model; BORATE BUFFER SOLUTION; ANODIC PASSIVE FILMS; POINT-DEFECT MODEL; CHLORIDE; BREAKDOWN; DEPENDENCE; ION;
D O I：
10.1007/s10800-009-9863-9
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effect of temperature change rate on the critical pitting temperature (CPT) for two kinds of duplex stainless steels (DSS, namely UNS S31803 and UNS S32750) in 1 mol L-1 NaCl solution was investigated using the potentiostatic current transient technique. The values of CPT for two DSSs all increased as the temperature change rate (upsilon) increased. A linear relationship between the CPT and the square root of temperature change rate (upsilon(1/2)) was found. Furthermore, deriving from the point defect model (PDM), this particular relationship received theoretical support at low temperature change rates.
引用
收藏
页码：1703 / 1708
页数：6
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