Kinetics of oxidation for beta-sialon in diphase beta-sialon/Al2O3 composite

Authors
Li, YF Hong, YR Zhong, XC Li, TS
Citation
Yf. Li et al., Kinetics of oxidation for beta-sialon in diphase beta-sialon/Al2O3 composite, J MAT SCI T, 15(1), 1999, pp. 21-24
Citations number
12
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN journal
10050302 → ACNP
Volume
15
Issue
1
Year of publication
1999
Pages
21 - 24
Database
ISI
SICI code
1005-0302(199901)15:1<21:KOOFBI>2.0.ZU;2-Z
Abstract
Non-isothermal kinetic research has been carried out on oxidation behavior of beta-Sialon in diphase beta-Sialon/Al2O3 composite at high temperatures. A kinetic formula is established for nonisothermal oxidation process of be ta-Sialon. The rate of oxidation process is controlled by chemical reaction at the initial stage and then by diffusion. The apparent activation energi es and apparent rate constants at different temperatures are determined by treating TG data of the overall process.