Abstract
The high-temperature (to 1450°C) oxidation of AlN-ZrB2-ZrSi2 powders and compact ceramic materials with different contents of ZrB2-ZrSi2 solid solution in air is examined using scanning electron microscopy and differential thermal, thermogravimetric, x-ray phase, and x-ray spectrum microanalyses. It is established that the hot-pressed (practically porousless) ceramic materials have high corrosion resistance up to 1350–1400°C when scale components (individual oxides) interact with each other to form solid solutions based on aluminum oxide, zirconium oxide, and aluminum borate. These phases become sintered in the presence of the liquid B2O3 phase, self-reinforced scale being formed.
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Translated from Poroshkovaya Metallurgiya, Vol. 47, No. 1–2 (459), pp. 196–203, 2008.
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Lavrenko, V.A., Panasyuk, A.D. & Podchernyaeva, I.A. High-temperature oxidation of composite AlN-ZrB2-ZrSi2 ceramics. Powder Metall Met Ceram 47, 151–156 (2008). https://doi.org/10.1007/s11106-008-0020-5
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DOI: https://doi.org/10.1007/s11106-008-0020-5