不同Cr含量的奥氏体不锈钢在700℃煤灰/高硫烟气环境中的腐蚀行为

曹超, 蒋成洋, 鲁金涛, 陈明辉, 耿树江, 王福会

Corrosion Behavior of Austenitic Stainless Steel with Different Cr Contents in 700oC Coal Ash/High Sulfur Flue-Gas Environment

CAO Chao, JIANG Chengyang, LU Jintao, CHEN Minghui, GENG Shujiang, WANG Fuhui

表1 3种试样的化学成分 (mass fraction / %)

Table 1 Chemical compositions of three samples

Alloy Ni Cr Mn Nb Si N C B P Co Fe Low Cr 19.41 19.13 0.40 6.23 1.19 0.13 0.13 0.002 0.018 4.74 Bal. Medium Cr 20.31 22.78 0.61 1.04 1.20 0.19 0.092 0.002 0.03 1.02 Bal. High Cr 19.20 24.00 0.45 1.41 0.58 0.18 0.10 0.002 0.02 2.30 Bal.