A high-entropy silicide (HES), (Ti0.2Zr0.2Nb0.2Mo0.2W0.2)Si2 with close-packed hexagonal structure is successfully manufactured through reactive spark plasma sintering at 1300 °C for 15 min. The elements in this HES are uniformly distributed in the specimen based on the energy dispersive spectrometer analysis except a small amount of zirconium that is combined with oxygen as impurity particles. The Young’s modulus, Poisson’s ratio, and Vickers hardness of the obtained (Ti0.2Zr0.2Nb0.2Mo0.2W0.2)Si2 are also measured.
Petrovic JJ, Vasudevan AK. Key developments in high temperature structural silicides. Mat Sci Eng A 1999, 261: 1–5.
Shah DM, Berczik D, Anton DL, et al. Appraisal of other silicides as structural materials. Mat Sci Eng A 1992, 155: 45–57.
Petrovic JJ, Vasudevan AK. Overview of high temperature structural silicides. Mater Res Soc Symp P 1993, 322: 3–8.
Jeng YL, Lavernia EJ. Processing of molybdenum disilicide. J Mater Sci 1994, 29: 2557–2571.
Mckamey CG, Tortorelli PF, Devan JH, et al. A study of pest oxidation in polycrystalline MoSi2. J Mater Res 1992, 7: 2747–2755.
Zhang GJ, Yue XM, Watanabe T. Synthesis of Mo(Si,Al)2 alloy by reactive hot pressing at low temperatures for a short time. J Mater Sci 1999, 34: 593–597.
Alman DE, Govier RD. Influence of Al additions on the reactive synthesis of MoSi2. Scripta Mater 1996, 34: 1287–1293.
Zhang GJ, Yue XM, Watanabe T, et al. In situ synthesis of Mo(Si,Al)2–SiC composites. J Mater Sci 2000, 35: 4729–4733.
Cook J, Khan A, Lee E, et al. Oxidation of MoSi2-based composites. Mat Sci Eng A 1992, 155: 183–198.
Yeh JW, Chen SK, Lin SJ, et al. Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes. Adv Eng Mater 2004, 6: 299–303.
Tsai MH, Yeh JW. High-entropy alloys: A critical review. Mater Res Lett 2014, 2: 107–123.
Yong Z, Zuo TT, Tang Z, et al. Microstructures and properties of high-entropy alloys. Pros Mater Sci 2014, 61: 1–93.
Miracle DB, Senkov ON. A critical review of high entropy alloys and related concepts. Acta Mater 2017, 122: 448–511.
Egami T, Ojha M, Khorgolkhuu O, et al. Local electronic effects and irradiation resistance in high-entropy alloys. Jom 2015, 67: 2345–2349.
Granberg F, Nordlund K, Ullah MW, et al. Mechanism of radiation damage reduction in equiatomic multicomponent single phase alloys. Phys Rev Lett 2016, 116: 135504.
Yan XL, Constantin L, Lu YF, et al. (Hf0.2Zr0.2Ta0.2Nb0.2Ti0.2) C high-entropy ceramics with low thermal conductivity. J Am Ceram Soc 2018, 101: 4486–4491.
Zhou JY, Zhang JY, Zhang F, et al. High-entropy carbide: A novel class of multicomponent ceramics. Ceram Int 2018, 44: 22014–22018.
Braic V, Balaceanu M, Braic M, et al. Characterization of multi-principal-element (TiZrNbHfTa)N and (TiZrNbHfTa) C coatings for biomedical applications. J Mech Behav Biomed 2012, 10: 197–205.
Hong QJ, Walle AVD. Prediction of the material with highest known melting point from ab initio molecular dynamics calculations. Phys Rev B 2015, 92: 020104(R).
Castle E, Csanádi T, Grasso S, et al. Processing and properties of high-entropy ultra-high temperature carbides. Sci Rep-UK 2018, 8: 8609.
Sarker P, Harrington T, Toher C, et al. High-entropy high-hardness metal carbides discovered by entropy descriptors. Nat Commun 2018, 9: 4980.
Gild J, Zhang YY, Harrington T, et al. High-entropy metal diborides: A new class of high-entropy materials and a new type of ultrahigh temperature ceramics. Sci Rep-UK 2016, 6: 37946.
Rost CM, Sachet E, Borman T, et al. Entropy-stabilized oxides. Nat Commun 2015, 6: 8485.
Bérardan D, Franger S, Dragoe D, et al. Colossal dielectric constant in high entropy oxides. Phys Status Solidi 2016, 10: 328–333.
Unal O, Petrovic JJ, Carter DH, et al. Dislocations and plastic deformation in molybdenum disilicide. J Am Ceram Soc 1990, 73: 1752–1757.
Liu GH, Li JT, Chen KX. Combustion synthesis of refractory and hard materials: A review. Int J Refract Met H 2013, 39: 90–102.
Kim HC, Park CD, Jeong JW, et al. Synthesis of dense MoSi2 by high-frequency induction heated combustion and its mechanical properties. Met Mater Int 2003, 9: 173–178.
Ko I Y, Kim BR, Nam KS, et al. Pulsed current activated combustion synthesis and consolidation of ultrafine NbSi2 from mechanically activated powders. Met Mater Int 2009, 15: 399–403.
Oh DY, Kim HC, Yoon JK, et al. Synthesis of dense WSi2 and WSi2-xvol.% SiC composites by high-frequency induction heated combustion and its mechanical properties. Met Mater Int 2006, 12: 307.
Sonber JK, Murthy TSRC, Sairam K, et al. Effect of TiSi2 addition on densification of cerium hexaboride. Ceram Int 2016, 42: 891–896.
Jérôme C, Jérôme Z, Julie B, et al. Composite zirconium silicides through an in situ process. In J Appl Ceram Tec 2006, 3: 23–31.
Harrington TJ, Gild J, Sarker P, et al. Phase stability and mechanical properties of novel high entropy transition metal carbides. Acta Mater 2019, 166: 271–280.
Financial support from the National Natural Science Foundation of China (Nos. 51532009 and 51872045), and the Science and Technology Commission of Shanghai Municipality (No. 18ZR1401400) are gratefully acknow-ledged.
About this article
Cite this article
Qin, Y., Liu, JX., Li, F. et al. A high entropy silicide by reactive spark plasma sintering. J Adv Ceram 8, 148–152 (2019). https://doi.org/10.1007/s40145-019-0319-3
- high-entropy ceramics
- high-entropy silicide
- spark plasma sintering