Abstract
In the present paper, the phase composition and morphology of lithium-titanium ferrospinel, synthesized by ceramic technology and subjected to thermal (T) and radiation-thermal (RT) annealing at a temperature of 1373 K, are studied. RT annealing of samples was performed by heating radiation of high-power electron beam pulses with energy 1.8 MeV. Bulk-density powders and powders compacted under a pressure of 1200 kg/cm2 were used as samples. The results obtained indicate the polyphase composition of initial powders. Annealing decreases the relative content of the secondary LiFeO2-based phase and increases the relative content of the master LiFe5O8-based phase. The efficiency of this process depends on the powder compactness and the heating regime. RT annealing significantly increases the rate of dissolution of the LiFeO2-based phase. An impact diffraction analysis has shown that the secondary phases have poly crystalline structures, whereas the LiFe5O8-based phase is formed by monocrystalline particles. Annealing of the compacted powder by an electron beam completely eliminates polycrystalline aggregates with ultradisperse grained structure.
| Original language | English |
|---|---|
| Pages (from-to) | 420-423 |
| Number of pages | 4 |
| Journal | Russian Physics Journal |
| Volume | 44 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jan 2001 |
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Electron-microscopic study of morphology and phase composition of lithium-titanium ferrites. / Surzhikov, Anatoly Petrovich; Pritulov, A. M.; Ivanov, Yu F.; Shabardin, R. S.; Usmanov, R. U.
In: Russian Physics Journal, Vol. 44, No. 4, 01.01.2001, p. 420-423.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electron-microscopic study of morphology and phase composition of lithium-titanium ferrites
AU - Surzhikov, Anatoly Petrovich
AU - Pritulov, A. M.
AU - Ivanov, Yu F.
AU - Shabardin, R. S.
AU - Usmanov, R. U.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - In the present paper, the phase composition and morphology of lithium-titanium ferrospinel, synthesized by ceramic technology and subjected to thermal (T) and radiation-thermal (RT) annealing at a temperature of 1373 K, are studied. RT annealing of samples was performed by heating radiation of high-power electron beam pulses with energy 1.8 MeV. Bulk-density powders and powders compacted under a pressure of 1200 kg/cm2 were used as samples. The results obtained indicate the polyphase composition of initial powders. Annealing decreases the relative content of the secondary LiFeO2-based phase and increases the relative content of the master LiFe5O8-based phase. The efficiency of this process depends on the powder compactness and the heating regime. RT annealing significantly increases the rate of dissolution of the LiFeO2-based phase. An impact diffraction analysis has shown that the secondary phases have poly crystalline structures, whereas the LiFe5O8-based phase is formed by monocrystalline particles. Annealing of the compacted powder by an electron beam completely eliminates polycrystalline aggregates with ultradisperse grained structure.
AB - In the present paper, the phase composition and morphology of lithium-titanium ferrospinel, synthesized by ceramic technology and subjected to thermal (T) and radiation-thermal (RT) annealing at a temperature of 1373 K, are studied. RT annealing of samples was performed by heating radiation of high-power electron beam pulses with energy 1.8 MeV. Bulk-density powders and powders compacted under a pressure of 1200 kg/cm2 were used as samples. The results obtained indicate the polyphase composition of initial powders. Annealing decreases the relative content of the secondary LiFeO2-based phase and increases the relative content of the master LiFe5O8-based phase. The efficiency of this process depends on the powder compactness and the heating regime. RT annealing significantly increases the rate of dissolution of the LiFeO2-based phase. An impact diffraction analysis has shown that the secondary phases have poly crystalline structures, whereas the LiFe5O8-based phase is formed by monocrystalline particles. Annealing of the compacted powder by an electron beam completely eliminates polycrystalline aggregates with ultradisperse grained structure.
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UR - http://www.scopus.com/inward/citedby.url?scp=52549102758&partnerID=8YFLogxK
U2 - 10.1023/A:1011904630910
DO - 10.1023/A:1011904630910
M3 - Article
AN - SCOPUS:52549102758
VL - 44
SP - 420
EP - 423
JO - Russian Physics Journal
JF - Russian Physics Journal
SN - 1064-8887
IS - 4
ER -