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Research Article | Open Access

Interior-collapsing mechanism by hydrothermal process of the MgAl2O4/MgO porous ceramic

Yao YAO, Yue ZHANG( )
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China
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Abstract

Ceramic core is a critical component in the super-alloy turbine blade casting. In our previous work, a novel multi-phase MgAl2O4/MgO porous ceramic was prepared for this purpose. The most important property was that it crumbled completely after hydrothermal treatment in just pure water, due to the hydration of MgO. In this work, the hydration process of the MgO embedded in the inert matrix was investigated in detail. The collapse behaved as an interior destruction without any bulk expansion of the sample. The hydration percentage was the only factor related to the water-collapsibility. The morphology of hydration product indicated that the reaction advanced in particular direction. Based on the finite element analysis for the expansion effect on the porous structure, the interior-collapsing mechanism was proposed. During the hydration process, the MgO grains exerted pressure to the surrounding matrix and induced the collapse in the adjacent structure. This process took place throughout the matrix. Finally, the sample crumbled completely to the powders. No bulk dilatation was detected before the powdering, indicating that the collapse process would not exert pressure outward. Thus the alloy blade would not be damaged during the removal of the ceramic core. It was also predicted that the decrease in the MgO grain size was beneficial to the water-collapsibility.

Keywords

ceramic coresporous structureMgOhydrationinterior-collapsing mechanism

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References

[1]
Kanyo JE, Schafföner S, Uwanyuze RS, et al. An overview of ceramic molds for investment casting of nickel superalloys. J Eur Ceram Soc 2020, 40: 4955–4973.
Crossref Google Scholar
[2]
Kim EH, Park HY, Lee CL, et al. Single crystal casting of gas turbine blades using superior ceramic core. J Mater Res Technol 2020, 9: 3348–3356.
Crossref Google Scholar
[3]
Zheng W, Wu JM, Chen S, et al. Fabrication of high-performance silica-based ceramic cores through selective laser sintering combined with vacuum infiltration. Addit Manuf 2021, 48: 102396.
Crossref Google Scholar
[4]
Zhao G, Hu KH, Feng Q, et al. Creep mechanism of zircon-added silica ceramic cores formed by stereolithography. Ceram Int 2021, 47: 17719–17725.
Crossref Google Scholar
[5]
An GS, Choi SW, Kim TG, et al. Amino-functionalization of colloidal alumina particles for enhancement of the infiltration behavior in a silica-based ceramic core. Ceram Int 2017, 43: 157–161.
Crossref Google Scholar
[6]
Jiang WG, Li KW, Xiao JH, et al. Effect of silica fiber on the mechanical and chemical behavior of alumina-based ceramic core material. J Asian Ceram Soc 2017, 5: 410– 417.
Crossref Google Scholar
[7]
Tang SY, Yang L, Liu XW, et al. Direct ink writing additive manufacturing of porous alumina-based ceramic cores modified with nanosized MgO. J Eur Ceram Soc 2020, 40: 5758–5766.
Crossref Google Scholar
[8]
Li H, Liu YS, Liu YS, et al. Effect of sintering temperature in argon atmosphere on microstructure and properties of 3D printed alumina ceramic cores. J Adv Ceram 2020, 9: 220–231.
Crossref Google Scholar
[9]
Zhu WJ, Tian GQ, Lu Y, et al. Leaching improvement of ceramic cores for hollow turbine blades based on additive manufacturing. Adv Manuf 2019, 7: 353–363.
Crossref Google Scholar
[10]
Bae CJ, Kim D, Halloran JW. Mechanical and kinetic studies on the refractory fused silica of integrally cored ceramic mold fabricated by additive manufacturing. J Eur Ceram Soc 2019, 39: 618–623.
Crossref Google Scholar
[11]
Zheng W, Wu JM, Chen S, et al. Influence of Al2O3 content on mechanical properties of silica-based ceramic cores prepared by stereolithography. J Adv Ceram 2021, 10: 1381–1388.
Crossref Google Scholar
[12]
Zhang H, Lu ZL, Ji Z, et al. Basis for the alkaline removal process design of the alumina-based ceramic core. J Ceram Soc Jpn 2017, 125: 616–622.
Crossref Google Scholar
[13]
Yao Y, Hu SJ, Zhang Y. A novel MgAl2O4/MgO ceramic core with water-collapsibility. Mater Lett 2022, 306: 130810.
Crossref Google Scholar
[14]
Fruhwirth O, Herzog GW, Hollerer I, et al. Dissolution and hydration kinetics of MgO. Surf Technol 1985, 24: 301–317.
Crossref Google Scholar
[15]
Filippou D, Katiforis N, Papassiopi N, et al. On the kinetics of magnesia hydration in magnesium acetate solutions. J Chem Technol Biotechnol 1999, 74: 322–328.
Crossref
[16]
Rocha SD, Mansur MB, Ciminelli VS. Kinetics and mechanistic analysis of caustic magnesia hydration. J Chem Technol Biotechnol 2004, 79: 816–821.
Crossref Google Scholar
[17]
Feitknecht W, Braun H. Der mechanismus der hydratation von magnesiumoxid mit wasserdampf. Helvetica Chimica Acta 1967, 50: 2040–2053.
Crossref Google Scholar
[18]
Tang XJ, Guo L, Chen C, et al. The analysis of magnesium oxide hydration in three-phase reaction system. J Solid State Chem 2014, 213: 32–37.
Crossref Google Scholar
[19]
Salomão R, Arruda CC, Kawamura MA. A systemic investigation on the hydroxylation behavior of caustic magnesia and magnesia sinter. Ceram Int 2015, 41: 13998–14007.
Crossref Google Scholar
[20]
Vermilyea DA. The dissolution of MgO and Mg(OH)2 in aqueous solutions. J Electrochem Soc 1969, 116: 1179–1183.
Crossref Google Scholar
[21]
Wogelius RA, Refson K, Fraser DG, et al. Periclase surface hydroxylation during dissolution. Geochimica Cosmochimica Acta 1995, 59: 1875–1881.
Crossref Google Scholar
[22]
Hasselman DPH. Relation between effects of porosity on strength and on Young’s modulus of elasticity of polycrystalline materials. J Am Ceram Soc 1963, 46: 564–565.
Crossref Google Scholar
[23]
Chase MW. NIST-JANAF Thermochemical Tables, 4th edn. USA: American Institute of Physics, 1998.
[24]
Kelemen PB, Hirth G. Reaction-driven cracking during retrograde metamorphism: Olivine hydration and carbonation. Earth Planet Sci Lett 2012, 345–348: 81–89.
Crossref Google Scholar
[25]
Birchal VS, Rocha SDF, Mansur MB, et al. A simplified mechanistic analysis of the hydration of magnesia. Can J Chem Eng 2001, 79: 507–511.
Crossref Google Scholar
[26]
Kuleci H, Schmidt C, Rybacki E, et al. Hydration of periclase at 350 ℃ to 620 ℃ and 200 MPa: Experimental calibration of reaction rate. Mineral Petrol 2016, 110: 1– 10.10.1007/s00710-015-0414-2
Crossref Google Scholar
[27]
Langel W, Parrinello M. Ab initio molecular dynamics of H2O adsorbed on solid MgO. J Chem Phys 1995, 103: 3240–3252.
Crossref Google Scholar
[28]
Scamehorn CA, Hess AC, McCarthy MI. Correlation corrected periodic Hartree–Fock study of the interactions between water and the (001) magnesium oxide surface. J Chem Phys 1993, 99: 2786–2795.
Crossref Google Scholar
[29]
Mejias JA, Berry AJ, Refson K, et al. The kinetics and mechanism of MgO dissolution. Chem Phys Lett 1999, 314: 558–563.
Crossref Google Scholar
[30]
Kushwaha AK. Vibrational and elastic properties of aluminate spinel MgAl2O4. Phys B Condens Matter 2010, 405: 2795–2798.
Crossref Google Scholar
[31]
Jiang FM, Speziale S, Duffy TS. Single-crystal elasticity of brucite, Mg(OH)2, to 15 GPa by Brillouin scattering. Am Mineral 2006, 91: 1893–1900.
Crossref Google Scholar
[32]
Kuleci H, Ulven OI, Rybacki E, et al. Reaction-induced fracturing in a hot pressed calcite–periclase aggregate. J Struct Geol 2017, 94: 116–135.
Crossref Google Scholar
[33]
Guren MG, Sveinsson HA, Hafreager A, et al. Molecular dynamics study of confined water in the periclase–brucite system under conditions of reaction-induced fracturing. Geochimica Cosmochimica Acta 2021, 294: 13–27.
Crossref Google Scholar
Journal of Advanced Ceramics
Volume 11 Issue 5,
May 2022
Pages 814-824
DOI: 10.1007/s40145-022-0576-4
Cite this article:
YAO Y, ZHANG Y. Interior-collapsing mechanism by hydrothermal process of the MgAl2O4/MgO porous ceramic. Journal of Advanced Ceramics, 2022, 11(5): 814-824. https://doi.org/10.1007/s40145-022-0576-4

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Received: 19 December 2021
Revised: 17 January 2022
Accepted: 24 January 2022
Published: 20 April 2022
© The Author(s) 2022.

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