Oxidation kinetics of a rough laminar pyrocarbon in O2-, H2O- and CO2-containing atmospheres

被引：3

作者：

Fradin, Marina ^{[1
,2
]}

Vignoles, Gerard L. ^{[1
]}

Ville, Charlotte ^{[1
]}

Couegnat, Guillaume ^{[1
]}

Ridard, Mathilde ^{[2
]}

Rebillat, Francis ^{[1
]}

机构：

[1] UMR 5801 CNRS Safran CEA Univ Bordeaux, Lab Compos ThermoStruct LCTS, 3 Allee La Boetie, F-33600 Pessac, France

[2] ArianeGroup SAS, 3 Rue Touban, F-33185 Le Haillan, France

来源：

CORROSION SCIENCE | 2023年 / 221卷

关键词：

C; oxidation; C. kinetic parameters; A. ceramic matrix composites; A; carbon; B. 3D computed tomography; B; SEM; CARBON-DIOXIDE; CARBON/CARBON COMPOSITES; WATER-VAPOR; BEHAVIOR; GASIFICATION; TEMPERATURE; PROTECTION; ABLATION; AIR; CO2;

D O I：

10.1016/j.corsci.2023.111300

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The originality of this work relies on the identification of kinetic parameters for a rough laminar pyrocarbon material under three different oxidizing atmospheres. Thermogravimetric analysis was used to carry out oxidation tests on a ex-CVI porous C/C composite under O-2-, H2O- and CO2-containing atmospheres at << low-temperatures >>. They were proven to be in a chemical reaction-controlled regime in the porous volume of the material and at its external surface through the use of X-rays micro-tomography characterization technique and simple analytical model-based considerations. Activation energies of 203.2 kJ.mol(-1), 253.9 kJ.mol(-1) and 302.2 kJ.mol(-1) were identified under O-2, H2O and CO2.

引用

页数：12

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