Technological Aspects of Lithium-Titanium Ferrite Synthesis by Electron-Beam Heating
| Parent link: | Materials Vol. 16, iss. 2.— 2023.— [604, 14 p.] |
|---|---|
| Autor corporatiu: | |
| Altres autors: | , , , , |
| Sumari: | Title screen Solid-phase synthesis of lithium-titanium ferrite by electron-beam heating of a Fe2O3-Li2CO3-TiO2 initial reagents mixture with different history (powder, compact, mechanically activated mixture) was studied using X-ray diffraction, thermomagnetometric and specific saturation magnetization analyses. Ferrite was synthesized using an ILU-6 pulsed electron accelerator; it generated electrons with electron energy of 2.4 MeV to heat samples to temperatures of 600 and 750 °C. The isothermal holding time upon reaching the synthesis temperature was 0-120 min. The efficiency of ferrite synthesis by electron-beam heating was evaluated via comparison of the characteristics of the obtained samples with those synthesized by conventional ceramic technology under similar temperature-time conditions. It was found that the rate of ferrite formation depends on the heating method, temperature, synthesis time, density, and activity of the initial mixture. It was shown that sample compaction provides the preferential formation of unsubstituted lithium ferrite of Li0.5Fe2.5O4 composition with a Curie temperature of at ca. 630 °C in both synthesis methods. High-energy electron-beam heating of the mechanically activated mixture significantly accelerates synthesis of Li0.6Fe2.2Ti0.2O4 substituted ferrite, for which the Curie temperature and specific saturation magnetization were recorded as 534 °C and 50 emu/g, respectively. Therefore, LiTi ferrites can be obtained at a lower temperature (750 °C) and with a shorter synthesis time (120 min) compared to traditional ceramic technology. |
| Idioma: | anglès |
| Publicat: |
2023
|
| Matèries: | |
| Accés en línia: | http://earchive.tpu.ru/handle/11683/132549 https://doi.org/10.3390/ma16020604 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669495 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 669495 | ||
| 005 | 20250917155050.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\40735 | ||
| 035 | |a RU\TPU\network\40734 | ||
| 090 | |a 669495 | ||
| 100 | |a 20230522d2023 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a CH | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Technological Aspects of Lithium-Titanium Ferrite Synthesis by Electron-Beam Heating |f E. N. Lysenko, V. A. Vlasov, E. V. Nikolaev [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 49 tit.] | ||
| 330 | |a Solid-phase synthesis of lithium-titanium ferrite by electron-beam heating of a Fe2O3-Li2CO3-TiO2 initial reagents mixture with different history (powder, compact, mechanically activated mixture) was studied using X-ray diffraction, thermomagnetometric and specific saturation magnetization analyses. Ferrite was synthesized using an ILU-6 pulsed electron accelerator; it generated electrons with electron energy of 2.4 MeV to heat samples to temperatures of 600 and 750 °C. The isothermal holding time upon reaching the synthesis temperature was 0-120 min. The efficiency of ferrite synthesis by electron-beam heating was evaluated via comparison of the characteristics of the obtained samples with those synthesized by conventional ceramic technology under similar temperature-time conditions. It was found that the rate of ferrite formation depends on the heating method, temperature, synthesis time, density, and activity of the initial mixture. It was shown that sample compaction provides the preferential formation of unsubstituted lithium ferrite of Li0.5Fe2.5O4 composition with a Curie temperature of at ca. 630 °C in both synthesis methods. High-energy electron-beam heating of the mechanically activated mixture significantly accelerates synthesis of Li0.6Fe2.2Ti0.2O4 substituted ferrite, for which the Curie temperature and specific saturation magnetization were recorded as 534 °C and 50 emu/g, respectively. Therefore, LiTi ferrites can be obtained at a lower temperature (750 °C) and with a shorter synthesis time (120 min) compared to traditional ceramic technology. | ||
| 461 | |t Materials | ||
| 463 | |t Vol. 16, iss. 2 |v [604, 14 p.] |d 2023 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a lithium-titanium ferrite | |
| 610 | 1 | |a X-ray diffraction analysis | |
| 610 | 1 | |a mechanical activation | |
| 610 | 1 | |a radiation-thermal heating | |
| 610 | 1 | |a electron beam | |
| 610 | 1 | |a литий-титановые ферриты | |
| 610 | 1 | |a рентгеноструктурный анализ | |
| 610 | 1 | |a механическая активация | |
| 610 | 1 | |a радиационно-термический нагрев | |
| 610 | 1 | |a электронные лучи | |
| 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 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 Nikolaev |b E. V. |c specialist in the field of electrical engineering |c engineer of Tomsk Polytechnic University |f 1989- |g Evgeny Vladimirovich |3 (RuTPU)RU\TPU\pers\34529 |9 17910 | |
| 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 Gyngazov (Ghyngazov) |b S. A. |c specialist in the field of electronics |c Professor of Tomsk Polytechnic University, Doctor of technical sciences |f 1958- |g Sergey Anatolievich |3 (RuTPU)RU\TPU\pers\33279 |9 17024 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Институт неразрушающего контроля |b Проблемная научно-исследовательская лаборатория электроники, диэлектриков и полупроводников |3 (RuTPU)RU\TPU\col\19033 |
| 801 | 2 | |a RU |b 63413507 |c 20230522 |g RCR | |
| 856 | 4 | |u http://earchive.tpu.ru/handle/11683/132549 |z http://earchive.tpu.ru/handle/11683/132549 | |
| 856 | 4 | |u https://doi.org/10.3390/ma16020604 | |
| 942 | |c CF | ||