000 03787nlm1a2200409 4500
001 652687
005 20231030041150.0
035 _a(RuTPU)RU\TPU\network\18025
035 _aRU\TPU\network\17917
090 _a652687
100 _a20170123a2016 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aEffect of Mechanical Activation on the Phase Composition of Lanthanum Hexaboride Produced by SHS Method
_fO. Yu. Dolmatov [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 8 tit.]
330 _aBackground/Objectives: The work considers the effect of mechanical activation of the charge on the phase composition of the final product based on lanthanum hexaboride produced by the method of self-propagating high-temperature synthesis. Methods/Statistical analysis: To study the influence of mechanical activation on the SHS process a mixture of the following reagents was taken: Lanthanum oxide La2O3 and amorphous boron in the mass fractions of 2 to 1 respectively. Mechanical activation was carried out on a planetary ball mill AGO-2S. Findings: The mechanical activation results in particle size reduction, but it has a “saturation threshold”. Optimal parameters of mechanical activation are selected for the most complete conversion of the charge to the desired product of lanthanum hexaboride. It is established that mechanical activation has a “saturation threshold” after which further processing does not bring positive results, the sample either undergoes a thermo-mechanical destruction or the sample is converted to the finished product incompletely, so it is necessary to select the parameters of mechanical activation for each reagent mixture (charge). Optimal average particle size of the charge - 2.52 ?m (activation mode with a frequency of 20 Hz and a processing time of 15 minutes) was defined experimentally at which the most complete conversion of the sample to the finished product occurs. Applications/ Improvements: Due to the development of accelerator equipment for various purposes, the main direction of the development of thermal cathodes is the provision of good emission characteristics in harsh environments
461 _tIndian Journal of Science and Technology
463 _tVol. 8, iss. 36
_v[4 p.]
_d2016
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aгексаборид лантана
610 1 _aмеханическая активация
610 1 _aфазовый состав
610 1 _aускорительное оборудование
610 1 _aсамораспространяющийся высокотемпературный синтез
701 1 _aDolmatov
_bO. Yu.
_cPhysicist
_cCandidate of physical and mathematical sciences
_f1967-
_gOleg Yurevich
_2stltpush
_3(RuTPU)RU\TPU\pers\32619
701 1 _aKolyadko
_bD. K.
_gDaniil Konstantinovich
701 1 _aKuznetsov
_bM. S.
_cphysicist
_cSenior Lecturer of Tomsk Polytechnic University
_f1984-
_gMikhail Sergeyevich
_2stltpush
_3(RuTPU)RU\TPU\pers\31208
701 1 _aChursin
_bS. S.
_cnuclear physicist
_claboratory assistant of Tomsk Polytechnic University
_f1991-
_gStanislav Sergeevich
_2stltpush
_3(RuTPU)RU\TPU\pers\34213
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bФизико-технический институт (ФТИ)
_bКафедра физико-энергетических установок (№ 21) (ФЭУ)
_h48
_2stltpush
_3(RuTPU)RU\TPU\col\18730
801 2 _aRU
_b63413507
_c20170202
_gRCR
856 4 _uhttp://dx.doi.org/10.17485/ijst%2F2015%2Fv8i36%2F90572
942 _cCF