New approach forβ-SiC powder synthesis by combustion method

Autor:	C. W. Won, Y. B. Hou, H. H. Lee, Hayk H. Nersisyan
Rok vydání:	2009
Předmět:	Exothermic reaction Diffraction Materials science Scanning electron microscope Metals and Alloys Mineralogy Condensed Matter Physics Combustion Grinding Chemical engineering Mechanics of Materials Specific surface area Materials Chemistry Ceramics and Composites Leaching (metallurgy) BET theory
Zdroj:	Powder Metallurgy. 52:233-237
ISSN:	1743-2901 0032-5899
DOI:	10.1179/174329008x315548
Popis:	The effect of KClO3+3Mg additive concentration on the combustion ability of Si+C 'weekly exothermic' mixture has been studied. The critical concentration of KClO3+3Mg mixture for combustion to occur has been found to be 0·02 mol. The morphological and structural characteristics of products have been investigated as a function of the additive concentration, reaction pressure and the initial sample diameter. The reaction products have been analysed by X-ray diffraction, scanning electron microscopy and BET surface area analysis methods. It has been shown that β-SiC hollow globules composed of submicrometre size particles have been formed during the combustion reaction. After leaching and grinding of final products ultrafine and single phase β-SiC powders with particles size less than 0·5 μm, and specific surface area of 18·5 m2 g–1 have been synthesised.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e65021c82253a0dbbf98ef631a263155 https://doi.org/10.1179/174329008x315548 Zobrazit plný text záznamu Plný text ve formátu PDF