Formation Mechanism of Al2O3/HfO2 Eutectic Coating on SiC Substrate Using Light Focusing Method

Shunkichi Ueno; Kyosuke Seya; Tohru Sekino

doi:10.4028/p-Edf5Vm

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HomeMaterials Science ForumMaterials Science Forum Vol. 1106Formation Mechanism of Al2O3/HfO2 Eutectic Coating...

Formation Mechanism of Al₂O₃/HfO₂ Eutectic Coating on SiC Substrate Using Light Focusing Method

Abstract:

In this paper, we discuss our previous experimental results and recent considerations on the preparation of solidified oxide eutectic coating on non-oxide ceramics by unidirectional solidification method using light focusing apparatus. As an example, an explanation is given here with regard to the formation mechanism of Al₂O₃-HfO₂ eutectic coatings on SiC substrate. The Al₂O₃ component in oxide melt easily reacts with SiC and primary HfO₂ phase solidified on SiC substrate. However, the solidified HfO₂ phase also react with SiC substrate and HfC-HfO₂ graded functional layer is formed on SiC substrate and Al₂O₃-HfO₂ eutectic microstructure is formed on the graded functional layer

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Periodical:

Materials Science Forum (Volume 1106)

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81-85

DOI:

https://doi.org/10.4028/p-Edf5Vm

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Online since:

December 2023

Authors:

Shunkichi Ueno*, Kyosuke Seya, Tohru Sekino

Keywords:

Al₂O₃-HfO₂ Eutectic Coating, Microstructure Formation Mechanism, Unidirectional Solidification

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References

[1] R. Naslain, Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview, Composites Science and Technology, 64, 155-170 (2004).

DOI: 10.1016/s0266-3538(03)00230-6

Google Scholar

[2] I. Yuri, T. Hisamatsu, Recession Rate Prediction for Ceramic Materials in Combustion Gas Flow, Proc. ASME Turbo Expo 2003, 633-642, GT2003-38886 (2003).

DOI: 10.1115/gt2003-38886

Google Scholar

[3] S. Ueno, T. Ohji and H.T. Lin, Recession Behavior of Yb2Si2O7 under High Speed Steam Jet at High Temperatures, Corrosion Science, 50, 178-182 (2008).

DOI: 10.1016/j.corsci.2007.06.014

Google Scholar

[4] S. Ueno, T. Ohji and H.T. Lin, Recession Behavior of a Silicon Nitride with Multi-layered Environmental Barrier Coating System, Ceram. Int., 33, 859-862 (2007).

DOI: 10.1016/j.ceramint.2006.01.012

Google Scholar

[5] Y. Waku, N. Nakagawa, T. Wakamoto, H. Ohtsubo, K. Shimizu, Y. Kohtoku, The Creep and Thermal Stability Characteristics of a Unidirectionally Solidified Al2O3/YAG Eutectic Composite, J. Mater. Sci., 33, 4943-4951 (1998).

DOI: 10.1023/a:1004377626345

Google Scholar

[6] S. Ueno, K. Seya, Y. Furukawa, T. Nishimura and B.K. Jang, Mater. Sci. Technol, Jpn, 53, 30-33 (2016).

Google Scholar

[7] K.A. Jackson and J.D. Hunt, Lamellar and Rod Eutectic Growth, Metal. Soc. AIME, 236, 1129-1141 (1966).

Google Scholar

[8] L.M. Lopato, A.V. Shevchenko and G.I. Gerasimyuk, System HfO2–Al2O3, Neorg. Mater., 12, 1623-1626 (1976).

Google Scholar

[9] K. Seya, S. Ueno and B.K. Jang, Preparation of Environmental Barrier Coating with Al2O3-HfO2 Eutectic Structure by Optical Zone Melting Method, Mater. Sci. Technol, Jpn, 51, 31-35 (2015).

Google Scholar

[10] R.H. Lamoreaux and D.L. Hildenbrand, High‐Temperature Vaporization Behavior of Oxides II. Oxides of Be, Mg, Ca, Sr, Ba, B, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Zn, Cd, and Hg, J. Phys. Chem. Ref. Data, 16, 419 (1987).

DOI: 10.1063/1.555799

Google Scholar

[11] R.S. Krishnan, R. Srinivasan and S. Devanarayanan, Thermal Expansion of Crystals, International Series in The Science of The Solid State Vol.12, Pergamon press, p.132 (1979).

Google Scholar