Rheological properties of Y3Al5O12 powder obtained by preceramic organoyttroxanealumoxanesстатья

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Дата последнего поиска статьи во внешних источниках: 28 октября 2020 г.

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[1] Rheological properties of y3al5o12 powder obtained by preceramic organoyttroxanealumoxanes / D. D. Titov, E. A. Gumennikova, K. D. Danilin et al. // IOP Conference Series. — 2020. — Vol. 848. — P. 012090. Submicron powder Y3Al5O12 (YAG) aluminium yttrium garnet was synthesized from an Al-Y-ceramic-forming precursor, according to the method developed in the State Research Institute for Chemistry and Technology of Organoelement Compounds (SRICTO). The advantage of the method is the possibility of obtaining close to the stoichiometric phase and obtaining high purity nanopowder. In this work, we studied the effect of the pyrolysis temperature of the polymer (700o, 800o and 900oC) and grinding time on the rheological properties of the powder. It was shown that after pyrolysis at 700o and 800oC, the powder has an amorphous structure, the ultimate strain, in this case, being 6.1 and 8.1% of the initial size. The compressibility modulus decreases with increasing temperature from 34.5 to 19.4 MPa. Due to the formation of YAG crystals after pyrolysis at 900oC, the compressibility of the powder increases and the compacts become denser. [ DOI ]

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