Kinetic and structural aspects of tantalum hydride formation
Tantalum hydrides of various composition were synthesized by equilibrating tantalum with hydrogen at six different temperatures from 573 to 823 K under a constant hydrogen pressure of 1 bar. Both the exact Ta/H mole ratios and the kinetic parameters of hydriding were determined on the basis of the d...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2003-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2003/0352-51390309657S.pdf |
| _version_ | 1818560140481134592 |
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| author | Simonović B.R. Mentus Slavko V. Dimitrijević Radovan Ž. |
| author_facet | Simonović B.R. Mentus Slavko V. Dimitrijević Radovan Ž. |
| author_sort | Simonović B.R. |
| collection | DOAJ |
| description | Tantalum hydrides of various composition were synthesized by equilibrating tantalum with hydrogen at six different temperatures from 573 to 823 K under a constant hydrogen pressure of 1 bar. Both the exact Ta/H mole ratios and the kinetic parameters of hydriding were determined on the basis of the dependence of the H/Ta mole ratio on time. The influence of stoichiometry on the appearance of X-ray powder diffractograms at room temperature was studied. As a consequence of hydriding, for ratios H/Ta > 0.2, the original bcc Ta-lattice undergoes distortion, manifesting itself as both a shift and a splitting of the X-ray patterns in the X-ray diffractograms. For samples with H/Ta < 0.2, the appearance of some superstructure reflections at low Bragg angles was noted, which suggests a long range ordering of hydrogen with orthorhombic symmetry. |
| first_indexed | 2024-12-14T00:34:36Z |
| format | Article |
| id | doaj.art-a3976e78f17f460b98b9d374594a95c7 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-14T00:34:36Z |
| publishDate | 2003-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-a3976e78f17f460b98b9d374594a95c72022-12-21T23:24:42ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212003-01-01688-965766310.2298/JSC0309657S0352-51390309657SKinetic and structural aspects of tantalum hydride formationSimonović B.R.0Mentus Slavko V.1Dimitrijević Radovan Ž.2Holding Institute of General and Physical Chemistry, Studentski trg 12, 11000 BelgradeFaculty of Physical Chemistry, University of Belgrade, Studentski trg 12, 11000 BelgradeFaculty of Mining and Geology, University of Belgrade, Djušina 7, 11000 Belgrade, Serbia and MontenegroTantalum hydrides of various composition were synthesized by equilibrating tantalum with hydrogen at six different temperatures from 573 to 823 K under a constant hydrogen pressure of 1 bar. Both the exact Ta/H mole ratios and the kinetic parameters of hydriding were determined on the basis of the dependence of the H/Ta mole ratio on time. The influence of stoichiometry on the appearance of X-ray powder diffractograms at room temperature was studied. As a consequence of hydriding, for ratios H/Ta > 0.2, the original bcc Ta-lattice undergoes distortion, manifesting itself as both a shift and a splitting of the X-ray patterns in the X-ray diffractograms. For samples with H/Ta < 0.2, the appearance of some superstructure reflections at low Bragg angles was noted, which suggests a long range ordering of hydrogen with orthorhombic symmetry.http://www.doiserbia.nb.rs/img/doi/0352-5139/2003/0352-51390309657S.pdftantalumhydriding isothermhydriding capacityx-ray diffractometry. |
| spellingShingle | Simonović B.R. Mentus Slavko V. Dimitrijević Radovan Ž. Kinetic and structural aspects of tantalum hydride formation Journal of the Serbian Chemical Society tantalum hydriding isotherm hydriding capacity x-ray diffractometry. |
| title | Kinetic and structural aspects of tantalum hydride formation |
| title_full | Kinetic and structural aspects of tantalum hydride formation |
| title_fullStr | Kinetic and structural aspects of tantalum hydride formation |
| title_full_unstemmed | Kinetic and structural aspects of tantalum hydride formation |
| title_short | Kinetic and structural aspects of tantalum hydride formation |
| title_sort | kinetic and structural aspects of tantalum hydride formation |
| topic | tantalum hydriding isotherm hydriding capacity x-ray diffractometry. |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2003/0352-51390309657S.pdf |
| work_keys_str_mv | AT simonovicbr kineticandstructuralaspectsoftantalumhydrideformation AT mentusslavkov kineticandstructuralaspectsoftantalumhydrideformation AT dimitrijevicradovanz kineticandstructuralaspectsoftantalumhydrideformation |