Process for self-propagating synthesis of alpha-sialon powder with stable rare earth ion

Process for self-propagating synthesis of alpha-sialon powder with stable rare earth ion

The invention relates to a process for self-propagating synthesis of alpha-sialon powder with stable rare earth ion by using mass percent no less than 99.0% of silicon nitride Si3N4 powder, aluminium nitride (AlN) powder, rare-earth oxide (RE2O3, RE=Ce, Pr and Eu) and yttrium oxide (Y2O3), and mass...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WANBAO HE, PEILING WANG, JIUXIN JIANG
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:The invention relates to a process for self-propagating synthesis of alpha-sialon powder with stable rare earth ion by using mass percent no less than 99.0% of silicon nitride Si3N4 powder, aluminium nitride (AlN) powder, rare-earth oxide (RE2O3, RE=Ce, Pr and Eu) and yttrium oxide (Y2O3), and mass percent no less then 98.0% of aluminium (Al) and silicon (Si) powder as raw material, using alpha-Sialon general formula Re[x]Si[12-(m+n)]Al[m+n]O[n]N[16-n] as parameter for batching, wherein m=2n=3x, x=0.3-0.6, RE is doped by any one of Ce, Pr or Eu or by different proportion for composite doping with element Y.