| 000 | 04239nlm1a2200409 4500 | ||
|---|---|---|---|
| 001 | 644627 | ||
| 005 | 20231030040625.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\9710 | ||
| 090 | _a644627 | ||
| 100 | _a20151123a2015 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aNL | ||
| 135 | _adrnn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aThermal analysis study of solid-phase synthesis of zinc- and titanium-substituted lithium ferrites from mechanically activated reagents _fE. N. Lysenko [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: p. 1353 (2 tit.)] | ||
| 330 | _aThe solid-phase synthesis of Li0.4Fe2.4Zn0.2O4 and Li0.6Fe2.2Ti0.2O4 lithium-substituted ferrites from mechanically activated Li2CO3–Fe2O3–ZnO and Li2CO3–TiO2–Fe2O3 initial reagent mixtures was investigated using X-ray powder diffraction (XRD) and thermal analysis (TG/DSC) techniques. The mechanical milling of powder mixtures was carried out by a planetary ball mill with a rotation speed of 2220 rpm for 5 or 60 min. According to the XRD data, the crystallite sizes of initial reagents decrease by increasing the milling time. From thermal analysis for both unmilled mixtures, it was shown that the mass loss process due to CO2 evaporation occurs in the temperature range 500–730 °C and corresponds to the interaction between reagents and lithium carbonate decomposition. As for milled samples, the mass loss process starts at room temperature, and by increasing the milling time, the end process shifts toward lower temperatures up to 500 °C for 60-min milled ferrites. Thus, a preliminary mechanical activation of the initial reagents considerably enhances the reactivity of the solid-phase system and thus reduces the temperature of the thermal synthesis of lithium-substituted ferrites. It was established that lithium–zinc and lithium–titanium ferrites can be obtained at 700 °C (at least 200 °C lower than in the case of using unmilled reagents) for 120 min from mechanically activated 60-min milled reagents. Moreover, reactivity of the solid system remains high for a long time (at least no less than 2 years). | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tJournal of Thermal Analysis and Calorimetry | ||
| 463 |
_tVol. 122, iss. 3 _v[P. 1347-1353] _d2015 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aлитиевые ферриты | |
| 610 | 1 | _aтвердофазный синтез | |
| 610 | 1 | _aмеханоактивация | |
| 701 | 1 |
_aLysenko _bE. N. _cSpecialist in the field of electrical engineering _cHead of the laboratory of Tomsk Polytechnic University, Candidate of physical and mathematical sciences _f1972- _gElena Nikolaevna _2stltpush _3(RuTPU)RU\TPU\pers\32050 |
|
| 701 | 1 |
_aSurzhikov _bA. P. _cphysicist _cProfessor of Tomsk Polytechnic University, doctor of physical and mathematical sciences (DSc) _f1951- _gAnatoly Petrovich _2stltpush _3(RuTPU)RU\TPU\pers\30237 |
|
| 701 | 1 |
_aVlasov _bV. A. _cPhysicist _cSenior researcher of Tomsk Polytechnic University, Candidate of physical and mathematical sciences _f1975- _gVitaliy Anatolievich _2stltpush _3(RuTPU)RU\TPU\pers\31405 |
|
| 701 | 1 |
_aMalyshev _bA. V. _cSpecialist in the field of electrical engineering _cSenior researcher at Tomsk Polytechnic University, Candidate of Physics and Mathematics (PhD Phys.-Math.) _f1978- _gAndrei Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\30965 |
|
| 701 | 1 |
_aNikolaev _bE. V. _cspecialist in the field of electrical engineering _cengineer of Tomsk Polytechnic University _f1989- _gEvgeny Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\34529 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут неразрушающего контроля (ИНК) _bКафедра физических методов и приборов контроля качества (ФМПК) _h68 _2stltpush _3(RuTPU)RU\TPU\col\18709 |
| 801 | 2 |
_aRU _b63413507 _c20160226 _gRCR |
|
| 856 | 4 | _uhttp://dx.doi.org/10.1007/s10973-015-4849-9 | |
| 942 | _cCF | ||