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3 Fe和Al反应摩尔相变焓与温度的关系式

Table 3 Relationships between molar phase transition enthalpy and temperature for the reactions of Fe and Al

Reaction T / K ΔrH相 / (J·mol-1) (933-1298 K) Fe+Al→B2 298-933 -48483.14-11.20(T-298)-0.0338(T 2-2982) 933-1298 -58950.14-11.20(T-298)-0.0338(T 2-2982) 2Fe+5Al→η 298-933 -201636.29-109.17(T-298)-0.1152(T 2-2982) 933-1298 -253971.29-109.17(T-298)-0.1152(T 2-2982) Fe+3Al→θ 298-933 -111368.88-50.74(T-298)-0.0638(T 2-2982) 933-1298 -142769.88-50.74(T-298)-0.0638(T 2-2982)