Mechanical Properties and Thermal Shock Resistance of Fine-Grained Nd:YAG/SiC Ceramics

– We have studied the thermal shock resistance of fine-grained Y 2.5 Nd 0.5 Al 5 O 12 yttrium aluminum garnet (Nd:YAG) based composite ceramics reinforced with α-SiC particles (10–40 vol %), which are thought to be potentially attractive inert matrix fuel materials for nuclear power engineering. The...

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Veröffentlicht in:	Inorganic materials 2022-02, Vol.58 (2), p.199-204
Hauptverfasser:	Alekseeva, L. S., Nokhrin, A. V., Karazanov, K. O., Orlova, A. I., Boldin, M. S., Lantsev, E. A., Murashov, A. A., Chuvil’deev, V. N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Boundaries Ceramics Chemistry Chemistry and Materials Science Compressive properties Crack propagation Industrial Chemistry/Chemical Engineering Inorganic Chemistry Materials Science Mechanical properties Nuclear fuels Particulate composites Residual stress Shock resistance Silicon carbide Stress distribution Thermal resistance Thermal shock Yttrium-aluminum garnet
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Zusammenfassung:	– We have studied the thermal shock resistance of fine-grained Y 2.5 Nd 0.5 Al 5 O 12 yttrium aluminum garnet (Nd:YAG) based composite ceramics reinforced with α-SiC particles (10–40 vol %), which are thought to be potentially attractive inert matrix fuel materials for nuclear power engineering. The ceramics containing 10, 20, and 30% SiC have high thermal shock resistance due to the compressive internal stress field formed during sintering. Raising the thermal shock temperature causes stable crack growth in the Nd:YAG/40% SiC composite ceramic. This is due to predominant crack propagation along boundaries between silicon carbide particles, which have lower strength in comparison with Nd:YAG/Nd:YAG and Nd:YAG/SiC boundaries.
ISSN:	0020-1685 1608-3172
DOI:	10.1134/S0020168522020017