[2] [2] PEREPEZKO J H. Materials science. The hotter the engine, the better［J］. Science, 2009, 326(5956): 1068-1069.

[3] [3] PADTURE N P. Advanced structural ceramics in aerospace propulsion［J］. Nature Materials, 2016, 15(8): 804-809.

[7] [7] WUCHINA E, OPILA E, OPEKA M, et al. UHTCs: ultra-high temperature ceramic materials for extreme environment applications［J］. The Electrochemical Society Interface, 2007, 16(4): 30-36.

[8] [8] FAHRENHOLTZ W G, HILMAS G E. Ultra-high temperature ceramics: materials for extreme environments［J］. Scripta Materialia, 2017, 129: 94-99.

[10] [10] NI D W, CHENG C, ZHANG Z, et al. Advances in ultra-high temperature ceramics, composites, and coatings［J］. Journal of Advanced Ceramics, 2022(1): 1-56.

[11] [11] GOLLA B R, MUKHOPADHYAY A, BASU B, et al. Review on ultra-high temperature boride ceramics［J］. Progress in Materials Science, 2020, 111: 100651.

[12] [12] FAHRENHOLTZ W G, HILMAS G E, TALMY I G, et al. Refractory diborides of zirconium and hafnium［J］. Journal of the American Ceramic Society, 2007, 90(5): 1347-1364.

[13] [13] JUSTIN J F, JANKOWIAK A. Ultra high temperature ceramics: densification, properties and thermal stability［J］. Aerospace Lab, 2011(3): 1-11.

[14] [14] ZHANG X H, HILMAS G E, FAHRENHOLTZ W G. Synthesis, densification, and mechanical properties of TaB2［J］. Materials Letters, 2008, 62(27): 4251-4253.

[15] [15] JAHAN N, ALI M A. A theoretical study of elastic, electronic, optical and thermodynamic properties of AlB2 and TaB2［J］. Condensed Matter, 2014.

[16] [16] BASU B, RAJU G B, SURI A K. Processing and properties of monolithic TiB2 based materials［J］. International Materials Reviews, 2006, 51(6): 352-374.

[17] [17] JIN X C, FAN X L, LU C S, et al. Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites［J］. Journal of the European Ceramic Society, 2018, 38(1): 1-28.

[18] [18] ZAPATA-SOLVAS E, JAYASEELAN D D, LIN H T, et al. Mechanical properties of ZrB2- and HfB2-based ultra-high temperature ceramics fabricated by spark plasma sintering［J］. Journal of the European Ceramic Society, 2013, 33(7): 1373-1386.

[19] [19] USHAKOV S V, NAVROTSKY A, HONG Q J, et al. Carbides and nitrides of zirconium and hafnium［J］. Materials, 2019, 12(17): 2728.

[20] [20] BUYAKOVA S P, DEDOVA E S, WANG D K, et al. Phase evolution during entropic stabilization of ZrC, NbC, HfC, and TiC［J］. Ceramics International, 2022, 48(8): 11747-11755.

[21] [21] COTTON J. Ultra-high-temperature ceramics［J］. Advanced Materials and Processes, 2010, 168(6): 26-28.

[22] [22] MALLICK A, CHAKRABORTY S, DAS P. Synthesis and consolidation of ZrC based ceramics: a review［J］. Reviews on Advanced Materials Science, 2016, 44(2): 109-133.

[23] [23] GUO Y L, CHEN J C, SONG W, et al. Electronic, mechanical and thermodynamic properties of ZrC, HfC and their solid solutions studied by first-principles calculation［J］. Solid State Communications, 2021, 338: 114481.

[25] [25] FARHADIZADEH A R, GHOMI H. Mechanical, structural, and thermodynamic properties of TaC-ZrC ultra-high temperature ceramics using first principle methods［J］. Materials Research Express, 2020, 7(3): 036502.

[26] [26] LVY F, HONES P, SCHMID P E, et al. Electronic states and mechanical properties in transition metal nitrides［J］. Surface and Coatings Technology, 1999, 120/121: 284-290.

[27] [27] LI D, TIAN F B, DUAN D F, et al. Mechanical and metallic properties of tantalum nitrides from first-principles calculations［J］. RSC Advances, 2014, 4(20): 10133-10139.

[28] [28] MEI Z G, BHATTACHARYA S, YACOUT A M. First-principles study of fracture toughness enhancement in transition metal nitrides［J］. Surface and Coatings Technology, 2019, 357: 903-909.

[29] [29] HARRISON R W, LEE W E. Processing and properties of ZrC, ZrN and ZrCN ceramics: a review［J］. Advances in Applied Ceramics, 2016, 115(5): 294-307.

[30] [30] IONESCU E, KLEEBE H J, RIEDEL R. Silicon-containing polymer-derived ceramic nanocomposites (PDC-NCs): preparative approaches and properties［J］. Chemical Society Reviews, 2012, 41(15): 5032-5052.

[31] [31] IONESCU E, BERNARD S, LUCAS R, et al. Polymer-derived ultra-high temperature ceramics (UHTCs) and related materials［J］. Advanced Engineering Materials, 2019, 21(8): 1900269.

[32] [32] JIANG J M, WANG S, LI W, et al. Low-temperature synthesis of tantalum carbide by facile one-pot reaction［J］. Ceramics International, 2016, 42(6): 7118-7124.

[33] [33] CHENG Z, FOROUGHI P, BEHRENS A. Synthesis of nanocrystalline TaC powders via single-step high temperature spray pyrolysis from solution precursors［J］. Ceramics International, 2017, 43(3): 3431-3434.

[34] [34] SHIMADA S, INAGAKI M, MATSUI K. Oxidation kinetics of hafnium carbide in the temperature range of 480 to 600 ℃［J］. Journal of the American Ceramic Society, 1992, 75(10): 2671-2678.

[35] [35] DESMAISON-BRUT M, ALEXANDRE N, DESMAISON J. Comparison of the oxidation behaviour of two dense hot isostatically pressed tantalum carbide (TaC and Ta2C) Materials［J］. Journal of the European Ceramic Society, 1997, 17(11): 1325-1334.

[36] [36] ZHANG J, WANG S, LI W, et al. Understanding the oxidation behavior of Ta-Hf-C ternary ceramics at high temperature［J］. Corrosion Science, 2020, 164: 108348.

[39] [39] NAZAROVA S Z, KURMAEV E Z, MEDVEDEVA N I, et al. Physical properties and electronic structure of TaC-HfC solid solutions［J］. Russian Journal of Inorganic Chemistry, 2007, 52(2): 233-237.

[40] [40] CHENG J, DONG Z J, ZHU H, et al. Synthesis and ceramisation of organometallic precursors for Ta4HfC5 and TaHfC2 ultra-fine powders through a facile one-pot reaction［J］. Journal of Alloys and Compounds, 2022, 898: 162989.

[41] [41] LU Y, SUN Y N, ZHANG T Z, et al. Polymer-derived Ta4HfC5 nanoscale ultrahigh-temperature ceramics: synthesis, microstructure and properties［J］. Journal of the European Ceramic Society, 2019, 39(2/3): 205-211.

[43] [43] PELLEGRINI C, BALAT-PICHELIN M, RAPAUD O, et al. Oxidation resistance of Zr- and Hf-diboride composites containing SiC in air plasma up to 2 600 K for aerospace applications［J］. Ceramics International, 2022, 48(2): 2177-2190.

[44] [44] XU X T, PAN X H, NIU Y R, et al. Difference evaluation on ablation behaviors of ZrC-based and ZrB2-based UHTCs coatings［J］. Corrosion Science, 2021, 180: 109181.

[45] [45] TALMY I G, ZAYKOSKI J A, OPEKA MM, et al. Oxidation of ZrB2 ceramics modified with SiC and group IV-VI transition metal diborides［J］. Proceedings-Electrochemical Society, 2001.

[46] [46] XIE Y L, SANDERS JR T H, SPEYER R F. Solution-based synthesis of submicrometer ZrB2 and ZrB2-TaB2［J］. Journal of the American Ceramic Society, 2008, 91(5): 1469-1474.

[47] [47] NIU Y R, PU H, HUANG L P, et al. Microstructure and ablation property of TaC-SiC composite coatings［J］. Key Engineering Materials, 2016, 697: 535-538.

[49] [49] LU Y, CHEN F H, AN P F, et al. Polymer precursor synthesis of TaC-SiC ultrahigh temperature ceramic nanocomposites［J］. RSC Advances, 2016, 6(91): 88770-88776.

[50] [50] CAI T, LIU D, QIU W F, et al. Polymer precursor-derived HfC-SiC ultrahigh-temperature ceramic nanocomposites［J］. Journal of the American Ceramic Society, 2018, 101(1): 20-24.

[51] [51] PATRA N, LEE W E. Facile precursor synthesis of HfC-SiC ultra-high-temperature ceramic composite powder for potential hypersonic applications［J］. ACS Applied Nano Materials, 2018, 1(9): 4502-4508.

[52] [52] WANG X Z, ZHANG L Y, WANG Y F. Preparation of HfC-SiC ultra-high-temperature ceramics by the copolycondensation of HfC and SiC precursors［J］. Journal of Materials Science, 2022, 57(7): 4467-4480.

[53] [53] BAI W C, JIAN K, SHI Y L. The preparation of LPVCS with high ceramic yield and low oxygen content［J］. Advances in Applied Ceramics, 2018, 117(6): 369-375.

[54] [54] CHENG J, WANG X Z, WANG H, et al. Preparation and high-temperature behavior of HfC-SiC nanocomposites derived from a non-oxygen single-source-precursor［J］. Journal of the American Ceramic Society, 2017, 100(11): 5044-5055.

[55] [55] GAO Q, HAN C, WANG X Z, et al. Stepwise synthesis of a Zr-C-Si main chain polymer precursor for ZrC/SiC/C composite ceramics［J］. RSC Advances, 2022, 12(4): 2253-2261.

[56] [56] WANG H, CHEN X B, GAO B, et al. Synthesis and characterization of a novel precursor-derived ZrC/ZrB2 ultra-high-temperature ceramic composite［J］. Applied Organometallic Chemistry, 2013, 27(2): 79-84.

[57] [57] SHEN J, TANG Z C, TUSIIME R, et al. Effects of hafnium sources and hafnium content on the structures and properties of SiBNC-Hf ceramic precursors［J］. Journal of the American Ceramic Society, 2023, 106(5): 3239-3251.

[59] [59] AMORS P, BELTRN D, GUILLEM C, et al. Synthesis and characterization of SiC/MC/C ceramics (M = Ti, Zr, Hf) starting from totally non-oxidic precursors［J］. Chemistry of Materials, 2002, 14(4): 1585-1590.

[60] [60] YU Z J, YANG Y J, MAO K W, et al. Single-source-precursor synthesis and phase evolution of SiC-TaC-C ceramic nanocomposites containing core-shell structured TaC@C nanoparticles［J］. Journal of Advanced Ceramics, 2020, 9(3): 320-328.

[61] [61] WEN Q B, XU Y P, XU B B, et al. Single-source-precursor synthesis of dense SiC/HfCxN1-x-based ultrahigh-temperature ceramic nanocomposites［J］. Nanoscale, 2014, 6(22): 13678-13689.

[63] [63] WEN Q B, YU Z J, RIEDEL R, et al. Single-source-precursor synthesis and high-temperature evolution of a boron-containing SiC/HfC ceramic nano/micro composite［J］. Journal of the European Ceramic Society, 2021, 41(5): 3002-3012.

[64] [64] WEN Q B, YU Z J, RIEDEL R, et al. Significant improvement of high-temperature oxidation resistance of HfC/SiC ceramic nanocomposites with the incorporation of a small amount of boron［J］. Journal of the European Ceramic Society, 2020, 40(10): 3499-3508.

[65] [65] JAYASEELAN D D, ZAPATA-SOLVAS E, CHATER R J, et al. Structural and compositional analyses of oxidised layers of ZrB2-based UHTCs［J］. Journal of the European Ceramic Society, 2015, 35(15): 4059-4071.

[66] [66] YU Z J, LV X, LAI S Y, et al. ZrC-ZrB2-SiC ceramic nanocomposites derived from a novel single-source precursor with high ceramic yield［J］. Journal of Advanced Ceramics, 2019, 8(1): 112-120.

[67] [67] YU Z J, PEI Y X, LAI S Y, et al. Single-source-precursor synthesis, microstructure and high temperature behavior of TiC-TiB2-SiC ceramic nanocomposites［J］. Ceramics International, 2017, 43(8): 5949-5956.

[68] [68] CHENG J, WANG J, WANG X Z, et al. Preparation and high-temperature performance of HfC-based nanocomposites derived from precursor with Hf-(O, N) bonds［J］. Ceramics International, 2017, 43(9): 7159-7165.

[69] [69] FENG B, PETER J, FASEL C, et al. High-temperature phase and microstructure evolution of polymer-derived SiZrCN and SiZrBCN ceramic nanocomposites［J］. Journal of the American Ceramic Society, 2020, 103(12): 7001-7013.

[70] [70] YUAN J, HAPIS S, BREITZKE H, et al. Single-source-precursor synthesis of hafnium-containing ultrahigh-temperature ceramic nanocomposites (UHTC-NCs)［J］. Inorganic Chemistry, 2014, 53(19): 10443-10455.