Autor:	Hailei Zhao, Keisuke Hiragushi, Yasuo Mizota
Rok vydání:	2003
Předmět:	Materials science Mullite General Chemistry Activation energy Condensed Matter Physics Electronic Optical and Magnetic Materials Biomaterials Matrix (chemical analysis) Colloid Chemical engineering Aluminosilicate Materials Chemistry Ceramics and Composites Composite material
Zdroj:	Journal of Sol-Gel Science and Technology. 27:287-291
ISSN:	0928-0707
Popis:	A hybrid aluminosilicate gel composed of a relatively small amount of single-phase gel in a diphasic matrix forms when a diphasic gel of AlOOH and SiO2 is heated at 700°C for 7 h. The formation of mullite from this hybrid gel is a sequential conversion process, but not of two entirely independent processes of single-phase gel and diphasic gel. The high commencement temperature (>1250°C) of mullite formation from this hybrid gel indicates that the dominant component (diphasic component) strongly affects or controls the mullite transformation behavior of the hybrid gel. The apparent activation energy for mullitization from this hybrid gel is 846 kJ/mol, which is somewhat lower than that of pure diphasic gel but much higher than that of pure single-phase gel.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::468124e2b8c30f29c4099911c53cb065 https://doi.org/10.1023/a:1024012802007 Zobrazit plný text záznamu Full text from SpringerLink