钛合金表面Si改性铝化物涂层制备及其高温氧化行为
刘国强, 冯长杰, 辛丽, 马天宇, 常皓, 潘钰璇, 朱圣龙

Preparation and High Temperature Oxidation Resistance of Si Modified Aluminide Coating on Titanium Alloy
LIU Guoqiang, FENG Changjie, XIN Li, MA Tianyu, CHANG Hao, PAN Yuxuan, ZHU Shenglong
表2 在900℃真空退火过程中可能发生反应的标准Gibbs自由能
Table 2 Standard Gibbs free energy changes of the reactions possibly took place during annealing at 900oC (ΔGθ )
Reaction equationΔGθ / kJ·mol-1No.
1/3Ti + Al = 1/3TiAl3-36.039(1)
Ti + Al = TiAl-62.408(2)
5/3Ti + Si = 1/3Ti5Si3-196.733(3)
Ti + Si = TiSi-129.430(4)
1/2Ti + Si = 1/2TiSi2-81.628(5)