Physicomechanical Properties of Ceramic Materials Prepared with Chemical Dispersion of Aluminum Alloy Grade AK12

An aluminum hydroxide residue forms during chemical dispersion of aluminum alloy grade AK12, containing a considerable amount of Na ions. These ions affect the structure and phase composition of ceramic specimens, since as a result of sintering they form a second phase, i.e., nepheline, which is uni...

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Veröffentlicht in:	Refractories and industrial ceramics 2013-11, Vol.54 (4), p.288-290
Hauptverfasser:	Shlyapin, A. D., Omarov, A. Yu, Tarasovskii, V. P., Trifonov, Yu. G., Airikh, A. I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alumina hydrate Aluminum alloys Aluminum hydroxide Aluminum oxide Ceramic materials Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Composites Energy conservation Glass Materials Science Natural Materials Porosity Powders Sintering Specialty metals industry
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Zusammenfassung:	An aluminum hydroxide residue forms during chemical dispersion of aluminum alloy grade AK12, containing a considerable amount of Na ions. These ions affect the structure and phase composition of ceramic specimens, since as a result of sintering they form a second phase, i.e., nepheline, which is uniformly distributed over Al 2 O 3 grain boundaries. The effect of degree of washing of original Al 2 O 3 powder on physicomechanical properties of ceramics from these powders, such as ultimate strength in bending, impact strength, density, porosity, and crack resistance, is studied.
ISSN:	1083-4877 1573-9139
DOI:	10.1007/s11148-013-9594-7