A study of the structure of an Aln-based ceramic obtained from ultrafine powders
Scientific Investigations
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Conclusions
The specimens obtained by hot pressing plasma-chemical AlN powder contain a mixture of AlN of the hexagonal modification and AlON of the cubic modification.
Lattice deformation of the hexagonal phase of AlN takes place during the hot pressing process of the AlN specimens. This is accompanied by a reduction of the lattice parameters in the direction of thea and c axes.
The lattice parameters of the hexagonal phase of AlN increase after vacuum-annealing in the 1200–1600°C range.
A decrease in the content of AlON and its lattice parameter takes place in the temperature range 1300–1600°C. This is related to the change in the chemical composition of the oxynitride phase.
Keywords
Hexagonal Hexagonal Phase Lattice Deformation Oxynitride Pressing Process
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Literature cited
- 1.G. V. Samsonov, in: Nitrides [in Russian], Naukova Dumka, Kiev (1969), pp. 259–279.Google Scholar
- 2.G. V. Samsonov, in: Chemistry and Physics of Nitrides [in Russian], Naukova Dumka, Kiev (1968), pp. 180–182.Google Scholar
- 3.M. A. Kuzenkova, P. S. Kislyi, G. N. Makarenko, et al., Poroshk, Metall., No. 4, 25–29 (1978).Google Scholar
- 4.M. R. Gordova, I. G. Kuznetsova, and D. N. Poluboyarinov, Silicates: Trans. D. I. Mendeleev Moscow Chemical Technology Institute, MKhTI im. D. I. Mendeleeva, Iss. 72, 83–85 (1973).Google Scholar
- 5.M. A. Kuzenkova, A. V. Kurdyumov, G. N. Makarenko, et al., Poroshk, Metall., No. 10, 35–40 (1981).Google Scholar
- 6.Powder Diffraction File, Scarch Monnol Inorganic, Published by the Joint Committee on Powder Diffraction Standards, USA (1973), 8–262, 18–52.Google Scholar
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© Plenum Publishing Corporation 1986