Abstract
The effect of a sintering aid, yttrium oxide, on the properties of ceramic materials based on lanthanum hexaaluminate synthesized by a sol–gel method is studied. The synthesis of a sol of ternary oxide composition conducted via hydrolysis of a mixed salt solution leads to the formation of particles with a “nucleus – shell”-type structure. The synthesis of lanthanum hexaaluminate with the participation of these particles proceeds at 1000 – 1100°C, and the sintering of ceramic at 1400 – 1500°C. Ceramic based on yttrium-containing lanthanum hexaaluminate exhibits improved strength properties.
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Dudkin, B.N., Bugaeva, A.Y., Zainullin, G.G. et al. The Effect of Yttrium Oxide on the Microstructure and Properties of Ceramics Based on Lanthanum Hexaaluminate Synthesized by the Sol–Gel Method. Refractories and Industrial Ceramics 45, 31–35 (2004). https://doi.org/10.1023/B:REFR.0000023348.19718.73
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DOI: https://doi.org/10.1023/B:REFR.0000023348.19718.73