Abstract
An explosive method for producing ultrafine α-Al2O3 is developed and optimal synthesis parameters are determined. Particles of ultrafine α-Al2O3 have a spherical shape and are separated from one another. The size distribution is log-normal (number-averaged size 70 nm and variance 1.9). Special features of phase transitions in ultrafine aluminum oxide under shock-wave action are studied. Results of x-ray phase analysis suggest stabilization of the new high-pressure phase δ′-Al2O3 with a face-centered cubic lattice with a parameter a = 8.53 Å Key words: metastability, corundum, shock-wave synthesis, surface, modification.
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Bukaemskii, A.A., Avramenko, S.S. & Tarasova, L.S. Ultrafine α-Al2O3. Explosive Method of Synthesis and Properties. Combustion, Explosion, and Shock Waves 38, 478–483 (2002). https://doi.org/10.1023/A:1016275602777
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DOI: https://doi.org/10.1023/A:1016275602777