TC4合金表面Zr增效硅化物涂层的组织及高温摩擦磨损性能

李轩, 田进, 田伟, 谢文玲, 李秀兰

Structure and High-temperature Wear Behavior of Zr Modified Silicide Coatings Prepared on TC4 Alloy

Xuan LI, Jin TIAN, Wei TIAN, Wen-Ling XIE, Xiu-Lan LI

表1 渗包中被渗元素氟化物在1000℃时的标准吉布斯形成自由能和平衡气相分压

Table 1 Standard Gibbs formation energies and vapor pressures of the co-deposited species in the pack at 1000℃

Species ΔfG/(kJ•mol-1) Vapor pressure /(1.013×105 Pa) ZrF4 -757.2 3.55×10-5 ZrF3 -701.0 9.77×10-7 ZrF2 -569.7 3.68×10-4 ZrF -81.2 1.58×10-9 SiF4 -716.5 1.11×10-6 SiF3 -624.8 3.29×10-11 SiF2 -631.5 6.46×10-8 SiF -309.6 5.83×10-13