中铬铁素体不锈钢18CrNb高温氧化行为

李鑫, 刘后龙, 毕洪运, 陈礼清

Oxidation Behavior of 18CrNb Ferritic Stainless Steel at Elevated Temperatures

LI Xin, LIU Houlong, BI Hongyun, CHEN Liqing

表2 试验用钢在700-1000℃的kp值、n值和氧化激活能Q值

Table 2 Values of kp, n, and Q of stainless steel 18CrNb at different temperatures

T/℃ kp/ g2cm-4s-1 n Q / (kJ/mol) 700 1.4 × 10-14 2.25 237 800 1.1 × 10-13 2.18 242 900 2.4 × 10-12 2.24 235 950 5.1 × 10-12 2.19 237 1000 5.3 × 10-10 2.27 200