T92钢700 ℃下料浆渗铝机理研究

龚兵兵, 刘光明, 安春香, 梅林波, 张帮彦

Growth Mechanism of Aluminide Coating on T92 Steel Prepared by Slurry Aluminizing at 700 ℃

GONG Bingbing, LIU Guangming, AN Chunxiang, MEI Linbo, ZHANG Bangyan

表4 Fe和Al反应的摩尔熵变与温度的关系式

Table 4 Relationships between molar entropy change and temperature for the reactions of Fe and Al

Reaction T / K ΔrS相 / (J·mol-1) (933-1298K) Fe+Al→B2 298-933 -4.74-11.20lnT / 298-0.0338(T-298) 933-1298 -4.74-11.20lnT / 298-0.0338(T-298)-10467 / T 2Fe+5Al→η 298-933 -42.34-109.17lnT / 298-0.1152(T-298) 933-1298 -42.34-109.17lnT / 298-0.1152(T-298)-52335 / T Fe+3Al→θ 298-933 -16.85-50.74lnT / 298-0.0638(T-298) 933-1298 -16.85-50.74lnT / 298-0.0638(T-298)-31401 / Τ