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5 Fe和Al反应的摩尔Gibbs自由能变化与温度的关系式

Table 5 Relationships between molar Gibbs free energy change and temperature for the reactions of Fe and Al

Reaction ΔrG相 / (J·mol-1) (298-1298 K) Fe+Al→B2 -48483.14-21.2724(T-298)+4.74+11.20TlnT / 298 2Fe+5Al→η -201636.29-143.4996(T-298)+42.34+109.17TlnT / 298 Fe+3Al→θ -111368.88-69.7524(T-298)+16.85+50.74TlnT / 298