In situ high-temperature X-Ray diffraction study of tantalum metal

被引：0

作者：

Si-Ahmed, Fariza ^{[1
]}

Afir, Arezki ^{[1
]}

Pialoux, Andre ^{[2
]}

Chikh, Houria ^{[1
]}

机构：

[1] Univ Sci & Technol Houari Boumediene, Lab Cristallog Thermodynam, Fac Chim, BP32, Al Alia 16111, Alger, Algeria

[2] Univ Paris Saclay, Lab Chim Gen, Batiment 462, F-91405 Orsay, France

来源：

MAIN GROUP CHEMISTRY | 2023年 / 22卷 / 03期

关键词：

Solid state reaction; thermal expansion; X-Ray methods; tantalum carbide; Ta-O-C phases diagram; OXIDATION MECHANISM; TA-N; CARBON; BEHAVIOR; CARBIDE; NIOBIUM; PARAMETER; PRESSURE; CO;

D O I：

10.3233/MGC-220105

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An in-situ thermal behavior study was conducted on the metallic tantalum under two conditions. The experimentation was carried out on tantalum pellets which were heated progressively "underwent reaction and under continuous pumping or under controlled monoxide pressure" in a graphite resistance high temperature X-ray diffractometer up to 2300 K. Through the in-situ study, a thermodynamic analysis showed that this involved the formation of Ta2O, Ta2O5 (low temperature modification) and Ta2C likely to be formed between 293 and 2300 K, in agreement with a reaction mechanism that we established to occur in four stages.

引用

页码：453 / 467

页数：15

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