[1] [1] CHEN Y, DAVE C, CHENG X, et al. The influence of polymer content and sintering temperature on yttria face-coat moulds for TiAl casting[J]. Eur Ceram Soc, 2012, 32(16): 4041-4049.

[2] [2] APPEL F, CLEMENS H, FISCHER F D. Modeling concepts for intermetallic titanium aluminides[J]. Prog Mater Sci, 2016, 81: 55-124.

[3] [3] JOHNSON D R, INUI H, MUTO S, et al. Microstructural development during directional solidification of α-seeded TiAl alloys[J]. Acta Mater, 2006, 54(4): 1077-1085.

[4] [4] BEWLAY B P, NAG S, SUZUKI A, et al. TiAl alloys in commercial aircraft engines[J]. Mater High Temp, 2016, 33(4): 549-559.

[5] [5] KUANG J P, HARDING R A, CAMPBELL J. A study of refractories as crucible and mould materials for melting and casting γ-TiAl alloys[J]. Int J Cast Met Res, 2001, 13(5): 277-292.

[6] [6] CUI Y S, TANG X X, GAO M, et al. Interactions between TiAl alloy and different oxide moulds under high-temperature and long-time condition[J]. High Temp Mater Processes, 2013, 32(3): 295-302.

[7] [7] JIA Q, CUI Y Y, YANG R. A study of two refractories as mould materials for investment casting TiAl based alloys[J]. J Mater Sci, 2006, 41(10): 3045-3049.

[8] [8] ZHANG H R, TANG X X, ZHOU C G, et al. Comparison of directional solidification of γ-TiAl alloys in conventional Al2O3 and novel Y2O3-coated Al2O3 crucibles[J]. J Eur Ceram Soc, 2013, 33(5): 925-934.

[9] [9] CHEN G Y, LAN B B, XIONG F H, et al. Pilot-scale experimental evaluation of induction melting of Ti-46Al-8Nb alloy in the fused BaZrO3 crucible[J]. Vacuum, 2019, 159: 293-298.

[10] [10] LI C H, HE J, WEI C, et al. Solidification and interface reaction of titanium alloys in the BaZrO3 shell-mould[J]. Mater Sci Forum, 2015,

[11] [11] LI C H, LI M Y, ZHANG H, et al. Fabrication of Y2O3 doped BaZrO3 coating on Al2O3 applied to solidification of titanium alloy[J]. Surf Coat Technol, 2017, 320: 146-152.

[12] [12] LI K, XIONG F H, CHEN G Y, et al. Directional solidification of Ti-46Al-8Nb alloy in BaZrO3 coated Al2O3 composite mould[J]. Intermetallics, 2018, 102: 106-113.

[13] [13] KUANG J P, HARDING R A, CAMPBELL J. A study of refractories as crucible and mould materials for melting and casting γ-TiAl alloys[J]. Int J Cast Met Res, 2001, 13(5): 277-292.

[14] [14] SMALLMAN R E, BISHOP R J. Metals and materials: science, processes, applications[M]. Great Britain: Butterworth-Heinemann Ltd, 1995: 180-183.

[15] [15] SAHA R L, NANDY T K, MISRA R D K, et al. Evaluation of the reactivity of titanium with mould materials during casting[J]. Mater Sci Bull, 1989, 12(5): 481-493.

[16] [16] CUI R J, GAO M, ZHANG H, et al. Interactions between TiAl alloys and yttria refractory material in casting process[J]. J Mater Process Technol, 2010, 210(9): 1190-1196.

[19] [19] SAHA R L, NANDY T K, MISRA R, et al. On the evaluation of stability of rare earth oxides as face coats for investment casting of titanium[J]. Metall Trans B, 1990, 21(3): 559-566.

[21] [21] SUSUMU M, MASATOSHI W, TAKAYUKI N, et al. Deoxidation of NiTi Alloy Melts Using Metallic Barium[J]. Mater Trans, 2008, 49(2): 289-293.

[22] [22] SCHAFFONER S, ANEZIRIS C G, BEREK H, et al. Corrosion behavior of calcium zirconate refractories in contact with titanium aluminide melts[J]. J Eur Ceram Soc, 2015, 35(3): 1097-1106.

[23] [23] CHENG X, SUN X D, YUAN C, et al. An investigation of a TiAlO based refractory slurry face coat system for the investment casting of Ti-Al alloys[J]. Intermetallics, 2012, 29: 61-69.

[24] [24] KOTVAL P S, CALDER R W. In situ identification of the silicide phase in super-α titanium alloys[J]. Metall Trans, 1972, 3(5): 1308-1311.

[25] [25] CHEN X F, REVIERE R D, OLIVER B F, et al. The site location of Zr atoms dissolved in TiAl[J]. Scr Metall Mater, 1992, 27(1): 45-49.

[26] [26] YUAN C, CHENG X, HOLT G S, et al. Investment casting of Ti-46Al-8Nb-1B alloy using moulds with CaO-stabilized zirconia face coat at various mould pre-heat temperatures[J]. Ceram Int, 2015, 41(3): 4129-4139.

[27] [27] DE F A C R, FLOWER H M. Microstructure and phase relationships in Ti—Al—Si system[J]. Met Sci J, 1999, 15(8): 869-877.

[28] [28] LAPIN J, GABALCOVA Z, PELACHOVA T. Effect of Y2O3 crucible on contamination of directionally solidified intermetallic Ti-46Al-8Nb alloy[J]. Intermetallics, 2011, 19(3): 396-403.