Wettability of TiAl alloy melt on ceramic moulds in electromagnetic field

来源期刊：中国有色金属学报(英文版)2008年第3期

论文作者：李邦盛 刘爱辉 南海 毕维生 郭景杰 傅恒志

文章页码：518 - 522

Key words：TiAl alloy; ceramic; electromagnetic field; wettability; interfacial reaction

Abstract: In the electromagnetic field, the wettability between Ti50Al alloy melt and oxide ceramic moulds was studied by the self-designed measuring apparatus. The thermodynamic and kinetic laws and mechanism on wetting were studied systematically. The results show that in the electromagnetic field, the order of contact angles for the molten Ti50Al alloy for the eight oxide materials is θ(Y₂O₃)＞θ(ZrO₂(Y₂O₃))＞θ(ZrO₂(CaO))＞θ(CaO)＞θ(ZrO₂(MgO))＞θ(Al₂O₃)＞θ(Zircon)＞θ(MgO). The wetting process of Ti₅0Al alloy and ceramic moulds includes the nonreactive wetting at the first stage, and the reactive wetting at the final stage. And the higher the ceramic chemical stability, the longer the nonreactive wetting time.

基金信息：the National Natural Science Foundation of China