Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10638277 | Materials Chemistry and Physics | 2005 | 6 Pages |
Abstract
The oxidation kinetics and mechanism of gradient SiC coating/3D carbon fiber braid (coated braid, CB) in static air were studied through isothermal oxidation-weight loss, non-isothermal thermogravimetric (TG) and differential thermogravimetric (DTG) also. The results showed that the oxidation process of CB in isothermal condition was reaction-controlled in the first step and, gas diffusion and reaction-controlled in the second step. In non-isothermal condition, the characteristic of oxidation process was self-catalytic. The oxidation mechanism was one-dimensional diffusion. The kinetic parameters were: log A (minâ1) = 10.12 and Ea (kJ molâ1) = 224.96.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Pengzhao Gao, Hanning Xiao, Hongjie Wang, Zhihao Jin,