Si含量对四元Fe-20Ni-20Cr-ySi合金在900℃下氧化行为的影响

冯抗抗, 任延杰, 吕云蕾, 周梦妮, 陈荐, 牛焱

Effect of Si Content on Oxidation Behavior of Quaternary Fe-20Ni-20Cr- ySi Alloys in Oxygen at 900oC

FENG Kangkang, REN Yanjie, LV Yunlei, ZHOU Mengni, CHEN Jian, NIU Yan

表2 Fe-20Ni-20Cr-ySi (y = 0, 1, 3, 5, %)合金在900℃下1 atm O2 中氧化动力学拟合的抛物线速率常数

Table 2 Parabolic rate constants of the oxidation kinetics of Fe-20Ni-20Cr-ySi (y = 0, 1, 3, 5, %) alloys in 1 atm O2 at 900oC for 24 h (g2·cm-4·s-1)

Alloy Parabolic stages Ⅰ Ⅱ Ⅲ Fe-20Ni-20Cr 4.32 × 10-12 (0-3 h) 5.85 × 10-11 (3-9 h) 1.26 × 10-12 (9-24 h) Fe-20Ni-20Cr-1Si 4.56 × 10-12 (0-6 h) 9.97 × 10-13 (6-18 h) Fe-20Ni-20Cr-3Si 4.26 × 10-13 (0-12 h) Fe-20Ni-20Cr-5Si 1.17 × 10-12 (0-6 h) 8.76 × 10-13 (6-16 h)