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Aluminum Oxide and Alumina Ceramics (review). Part 1. Properties of Al2O3 and Commercial Production of Dispersed Al2O3

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This paper provides a review of aluminum oxide properties associated with its use, varieties of commercial products, methods for producing aluminum oxide in a disperse state, in the form of polycrystalline ceramics and single-crystal products, as well as chemical aspects of the related technological processes.

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Notes

  1. A reference to aluminum oxide (Al2O3) in general often implies corundum (α-Al2O3), although in a stricter sense, Al2O3 includes all, even metastable modifications.

  2. There is an alternative classification, according to which materials with εr > 7 (silicon nitride), including Al2O3, are placed in the high dielectric permittivity group.

  3. There are also metastable aluminum orthosilicates Al2SiO5 (sillimanite, andalusite, and kyanite).

  4. According to Ref. [18], the composition, density and hardness of the specified corundum abrasives may differ somewhat from the data provided in Table 6.

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  28. GOST R 52381–2005. Abrasive materials. Granularity and grain composition of grinding powders. Control of grain structure, Standartinform, Moscow (2005), 11 p.

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This study was performed within the scope of the state assignment No. 10.8003.2017/8.9 of the Ministry of Education and Science of the Russian Federation.

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Correspondence to A. M. Abyzov.

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Translated from Novye Ogneupory, No. 1, January, pp. 16 – 23, 2019.

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Abyzov, A.M. Aluminum Oxide and Alumina Ceramics (review). Part 1. Properties of Al2O3 and Commercial Production of Dispersed Al2O3. Refract Ind Ceram 60, 24–32 (2019). https://doi.org/10.1007/s11148-019-00304-2

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