The oxidation kinetics study of ultrafine iron powders by thermogravimetric analysis; Journal of Thermal Analysis and Calorimetry; Vol. 115, iss. 2
| Parent link: | Journal of Thermal Analysis and Calorimetry Vol. 115, iss. 2.— 2014.— [P. 1447-1452] |
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| Körperschaften: | , |
| Weitere Verfasser: | , , , , , |
| Zusammenfassung: | Title screen The oxidation kinetics of ultrafine metallic iron powder to hematite (a-Fe2O3) up to temperatures 800 °C were studied in air using non-isothermal and isothermal thermogravimetric (TG) analysis. The powders with average particles size of 90, 200, and 350 nm were made by the electric explosion of wire. It was observed that the reactivity of the iron powder is increased with the decreasing particle size of powder. The experimental TG curves clearly suggest a multi-step process for the oxidation, and therefore a model-fitting kinetic analysis based on multivariate non-linear regressions was conducted. The complex reaction can be best described with a three-step reaction scheme consisting of two concurrent and one parallel reaction step. In one reaction pathway Fe is oxidized to a-Fe2O3. The other pathway is described by the oxidation of Fe to magnetite (Fe3O4). At higher temperatures the formed Fe3O4 is further oxidized in a a-Fe2O3. It is established that the best fitting three-step mechanism employed a branching set of n-order equations for each step. Режим доступа: по договору с организацией-держателем ресурса |
| Sprache: | Englisch |
| Veröffentlicht: |
2014
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| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1007/s10973-013-3456-x |
| Format: | Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=639326 |
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| 200 | 1 | |a The oxidation kinetics study of ultrafine iron powders by thermogravimetric analysis |f E. N. Lysenko, A. P. Surzhikov, S. P. Zhuravkov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: p. 1452 (19 tit.)] | ||
| 330 | |a The oxidation kinetics of ultrafine metallic iron powder to hematite (a-Fe2O3) up to temperatures 800 °C were studied in air using non-isothermal and isothermal thermogravimetric (TG) analysis. The powders with average particles size of 90, 200, and 350 nm were made by the electric explosion of wire. It was observed that the reactivity of the iron powder is increased with the decreasing particle size of powder. The experimental TG curves clearly suggest a multi-step process for the oxidation, and therefore a model-fitting kinetic analysis based on multivariate non-linear regressions was conducted. The complex reaction can be best described with a three-step reaction scheme consisting of two concurrent and one parallel reaction step. In one reaction pathway Fe is oxidized to a-Fe2O3. The other pathway is described by the oxidation of Fe to magnetite (Fe3O4). At higher temperatures the formed Fe3O4 is further oxidized in a a-Fe2O3. It is established that the best fitting three-step mechanism employed a branching set of n-order equations for each step. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Thermal Analysis and Calorimetry | ||
| 463 | |t Vol. 115, iss. 2 |v [P. 1447-1452] |d 2014 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a Ultrafine iron powders | |
| 610 | 1 | |a Electric explosion of wire | |
| 610 | 1 | |a Oxidation kinetic | |
| 610 | 1 | |a TG method | |
| 701 | 1 | |a Lysenko |b E. N. |c Specialist in the field of electrical engineering |c Professor of Tomsk Polytechnic University, Doctor of technical sciences |f 1972- |g Elena Nikolaevna |3 (RuTPU)RU\TPU\pers\32050 |9 16097 | |
| 701 | 1 | |a Surzhikov |b A. P. |c physicist |c Professor of Tomsk Polytechnic University, doctor of physical and mathematical sciences (DSc) |f 1951- |g Anatoly Petrovich |3 (RuTPU)RU\TPU\pers\30237 |9 14617 | |
| 701 | 1 | |a Zhuravkov |b S. P. |c chemist |c Leading Researcher, Associate Professor of Tomsk Polytechnic University, Candidate of Chemical Sciences |f 1961- |g Sergey Petrovich |3 (RuTPU)RU\TPU\pers\31297 |9 15475 | |
| 701 | 1 | |a Vlasov |b V. A. |c Physicist |c Senior researcher of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1975- |g Vitaliy Anatolievich |3 (RuTPU)RU\TPU\pers\31405 |9 15577 | |
| 701 | 1 | |a Pustovalov |b A. V. |c specialist in the field of electrical engineering |c Associate Scientist of Tomsk Polytechnic University |f 1986- |g Aleksey Vitalievich |3 (RuTPU)RU\TPU\pers\33698 |9 17329 | |
| 701 | 1 | |a Yavorovsky |b N. A. |c physicist |c Head of the laboratory of Tomsk Polytechnic University, Candidate of technical sciences |f 1941- |g Nikolay Aleksandrovich |3 (RuTPU)RU\TPU\pers\31935 | |
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