Abstract
The wetting of refractory substrates by oxide alloys has been investigated using a high-temperature sessile drop bench. The aim of this study was to select the best crucible material for directional solidification processes such as the Bridgman, edge-defined film-fed growth or micro-pulling down methods. Contact angles and surface tension were determined via high-resolution imaging. The O2 partial pressure in the furnace atmosphere was also measured. Alumina and a eutectic ceramic called A/YAG/Z (Al2O3/Y3Al5O12/ZrO2) were studied by investigating the following systems: alumina/molybdenum, alumina/tungsten and alumina/iridium; A/YAG/Z–molybdenum, A/YAG/Z–tungsten and A/YAG/Z–iridium. The results show intermediate wetting for both oxides (30° < θ <50°). This is an original result for A/YAG/Z. Several previous studies reported good wetting (7° < θ <20°) for alumina. Accurate surface tension values could not be obtained by image processing. Therefore, the Wilhelmy method was used, giving γ = 0.63 ± 0.03 N m−1 for alumina, which is comparable to the value of 0.67 ± 0.03 N m−1 reported in the literature. The surface tension obtained for A/YAG/Z was 0.71 N m−1, but this value was influenced by the approximate density used. A metal-like layer was observed on the apex of the drops after solidification. According to an SEM–EDS analysis, most of these layers were composed of molybdenum, tungsten and oxygen. Based on thermodynamic calculations, a mechanism which takes into account the oxidation of Mo parts and the dissolution of oxides in the drop is proposed.
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References
Calderon-Moreno JM, Yoshimura M (2005) Al2O3–Y3Al5O12(YAG)–ZrO2 ternary composite rapidly solidified from the eutectic melt. J Eur Ceram Soc 25:1365–1368
Peña JI, Larsson M, Merino RI, de Francisco I, Orera VM, LLorca J, Pastor JY, Martín A, Segurado J (2006) Processing, microstructure and mechanical properties of directionally-solidified Al2O3–Y3Al5O12–ZrO2 ternary eutectics. J Eur Ceram Soc 26:3113–3121
Lee JH, Yoshikawa A, Fukuda T, Waku Y (2001) Growth and characterization of Al2O3/Y3Al5O12/ZrO2 ternary eutectic fibers. J Cryst Growth 231:115–120
Song K, Zhang J, Lin X, Liu L, Huang W (2014) Microstructure and mechanical properties of Al2O3/Y3Al5O12/ZrO2 hypereutectic directionally solidified ceramic prepared by laser floating zone. J Eur Ceram Soc 34:3051–3059
Bunoiu OM, Duffar T, Nicoara I (2010) Gas bubbles in shaped sapphire. Prog Cryst Growth Charact Mater 56:123–145
Kurlov VN, Epelbaum BM (1998) EFG growth of sapphire tubes up to 85 mm in diameter. J Cryst Growth 187:107–110
Kobayashi M, Tsukada T, Hozawa M (2003) Effect of wetting of melt against die surface on the edge-defined film-fed growth of oxide crystals. J Cryst Growth 249:230–239
Epelbaum BM, Schierning G, Winnacker A (2005) Modification of the micro-pulling-down method for high-temperature solution growth of miniature bulk crystals. J Cryst Growth 275:e867–e870
Yoshikawa A, Nikl M, Boulon G, Fukuda T (2007) Challenge and study for developing of novel single crystalline optical materials using micro-pulling-down method. Opt Mater 30:6–10
Yoon DH (2004) Crystal growth of the oxide fiber single crystal for optical applications. Optoelectron Rev 12:199–212
Garandet JP, Alboussière T (1999) Bridgman growth: Modelling and experiments. Prog Cryst Growth Charact Mater 38:133–159.
Duffar T (2010) Crystal growth processes based on capillarity: Czochralski, floating zone, shaping and crucible techniques. Wiley, Chichester
Chang Y-Y, Lin S-Y (2011) Surface tension measurement of glass melts using sessile or pendant drop methods. J Taiwan Inst Chem Eng 42:922–928
Bates JL, McNeilly CE, Rasmussen JJ (1971) Properties of molten ceramics. Mater Sci Res:11–26
Duffar T, Bochu O, Dusserre P (2009) Effect of oxygen on the molten BGO/Ir wetting and sticking. J Mater Sci 45:2140–2143. doi:10.1007/s10853-009-4041-3
Asadian M (2012) The influence of atmosphere on oxides crystal growth, modern aspects of bulk crystal and thin film preparation. In: Dr. Nikolai Kolesnikov (ed) Intech, Oxford. http://www.intechopen.com/books/modern-aspects-of-bulk-crystal-and-thin-film-preparation/theinfluence-of-atmosphere-on-oxides-crystal-growth
Eustathopoulos N (2005) Progress in understanding and modeling reactive wetting of metals on ceramics. Curr Opin Solid State Mater Sci 9:152–160
Eustathopoulos N (1998) Dynamics of wetting in reactive metal/ceramic systems. Acta Mater 46:2319–2327
Eustathopoulos N, Nicholas MG, Drevet B (1999) Wettability at high temperatures, 1st edn. Pergamon, Amsterdam
Elyutin VP, Kostikov VI, Mitin BS, Nagibin YA (1969) Viscosity of alumina. Russ J Phys Chem 43:316–319
Elyutin VP, Mitin BS, Nagibin YA (1972) Properties of molten alumina. Inorg Mater 8:477–480
Rasmussen JJ, Nelson RP (1971) Surface tension and density of molten aluminium oxide. J Am Ceram Soc 54:398–401
Maurakh MA, Kostikov VI, Levin VY, Mitin BS (1968) Wetting of metals with liquid oxide. Vzaimodeistvie Mater Vysok. Sredoi Sb Tr Vses Nauch Semin: 159–166
Kostikov VI, Levin VY, Maurakh MA, Mitin BS (1968) Reaction of liquid oxide with refractory metals. Sb Mosk Inst Stali Splav 49:125–138
Storozh BD (1974) Theory and technology of sintering, thermal, and chemicothermal treatment processes. Acad Sci Ukr SSR Transl Porosh-Kovaya Metall 9:27–32
Glorieux B, Millot F, Rifflet JC (2002) Surface tension of liquid alumina from contactless techniques. Int J Thermophys 23:1249–1257
Kaplan WD, Chatain D, Wynblatt P, Carter WC (2013) A review of wetting versus adsorption, complexions, and related phenomena: the rosetta stone of wetting. J Mater Sci 48:5681–5717. doi:10.1007/s10853-013-7462-y
Hartland S, Hartley R (1976) Axi-symmetric fluid liquid interfaces, Elsevier Scientific Pub. Co.
Chatain D (1982) Etude expérimentale de la tension interfaciale liquide du système Ga-Pb entre les temperatures monotectique et critique. J Chim Phys 79:8
Chatain D (1983) Contribution à l’étude des proprietes physico-chimiques des interfaces entre deux liquides metalliques immiscibles
Acknowledgements
The authors are grateful to Dr. N. Eustathopoulos and Dr. D. Chatain for their encouragement and the many discussions on measurement techniques. Thanks are also due to J. Calabro and F. Charlot for their invaluable assistance in the analysis of SEM–EDS data. The SIMAP laboratory is under the co-tutelage of the Grenoble Institute of Technology, the Université J. Fourier, and the CNRS, and is part of LabEx TEC21.
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Tandjaoui, A., Cherif, M., Carroz, L. et al. Investigation of liquid oxide interactions with refractory substrates via sessile drop method. J Mater Sci 51, 1701–1712 (2016). https://doi.org/10.1007/s10853-015-9504-0
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DOI: https://doi.org/10.1007/s10853-015-9504-0