In situ measurement of high-temperature thermal diffusivity in a combustion-synthesized ceramic

被引：0

作者：

D. Vrel

S. Dubois

E.M. Heian

N. Karnatak

M.-F. Beaufort

机构：

[1] Laboratoire d'Ingénierie des Matériaux et des Hautes Pressions,

[2] 99 avenue J.-B. Clément,undefined

[3] 93430 Villetaneuse,undefined

[4] France,undefined

[5] Laboratoire de Métallurgie Physique,undefined

[6] bâtiment SP2MI,undefined

[7] BP 30179,undefined

[8] boulevard M. et P. Curie,undefined

[9] 86962 Futuroscope Cedex,undefined

[10] France,undefined

[11] Groupe Français d'Autocombustion,undefined

[12] GDR 2391,undefined

[13] J.-C. Niepce,undefined

[14] LRRS,undefined

[15] BP 47870,undefined

[16] 21078 Dijon,undefined

[17] France,undefined

来源：

The European Physical Journal B - Condensed Matter and Complex Systems | 2003年 / 33卷

关键词：

PACS. 44.30.+v Heat flow in porous media – 81.20.Ka Chemical synthesis; combustion synthesis – 61.10.-i X-ray diffraction and scattering;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A simple method to calculate thermal diffusivity in situ after a combustion synthesis reaction is presented. The combustion reaction was analyzed via time-resolved X-ray diffraction analysis and infrared thermography. Thermal diffusivity was estimated and used to calculate temperature profiles based on temperature profiles one second earlier. For a sample of TiC formed from Ti and C, a value of 2.00×10-6±0.20×10-6 m2 s-1 was calculated for temperatures between 1000 and 1900 K. This method is rapid and can avoid some problems associated with furnace-based measurements of thermal diffusivity, such as recrystallization and destruction of non-equilibrium phases.

引用

页码：31 / 39

页数：8

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