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Oxidative processes during heat treatment in intermetallic SmCo5 powder

Oksidacioni procesi pri zagrevanju praha intermetalnog jedinjenja SmCo5

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1996
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Аутори
Talijan, Nadežda M.
Milutinović Nikolić, Aleksandra
Jovanović, Žarko
Чланак у часопису (Објављена верзија)
,
Serbian Chemical Society / Srpsko hemijsko društvo
Метаподаци
Приказ свих података о документу
Апстракт
Understanding of the thermal stability of intermetallic SmCo5 powder is essential for designing the working atmosphere in all phases of the technological procedure in the production of sintered SmCo5 magnets to obtain maximal magnetic properties. The thermal stability of the SmCo5 powder with defined chemical composition and particle size was investigated in the interval from 20 to 900*C. It was found by thermogravimetic analysis (TGA) that up to 240*C, the oxidation of SmCo5 does not occur. X-Ray diffraction of the thermogravimetric experimental residue of the SmCo5 powder, heated at 240*C, yielded only the presence of the SmCo5 phase. By X-ray diffraction analysis different crystal forms were identified depending on the maximal heating temperature. The following phases were identified: Sm2O3, Co, CoO, Co3O4 and SmCoO3. According to TG and X-ray results, for each of the investigated temperatures, the corresponding chemical reactions were established. The experimental data from both ...the thermal and X-ray investigations confirm that the phases of pressing and aligning the SmCo5 powder, in the process of producing sintered SmCo5 magnets, may be performed without a protective atmosphere.

Кључне речи:
SmCo5 magnet / SmCo5 powder / oxidation / thermogravimetric analysis / X-ray analysis
Извор:
Journal of the Serbian Chemical Society, 1996, 61, 3, 189-195
Издавач:
  • Belgrade : Serbian Chemical Society / Beograd : Srpsko hemijsko društvo
Финансирање / пројекти:
  • Ministry of Science and Technology of Serbia (Project S. 3.03.26.029 1994/97)

ISSN: 0352-5139

Scopus: 2-s2.0-0040063692
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_cer_4136
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4136
Колекције
  • Radovi istraživača / Researchers' publications
Институција/група
IHTM
TY  - JOUR
AU  - Talijan, Nadežda M.
AU  - Milutinović Nikolić, Aleksandra
AU  - Jovanović, Žarko
PY  - 1996
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4136
AB  - Understanding of the thermal stability of intermetallic  SmCo5 powder is essential for designing the working atmosphere in all phases of the technological procedure  in the production of sintered SmCo5 magnets to obtain maximal magnetic properties. The thermal stability of the SmCo5 powder with defined chemical composition and particle size was investigated in the interval from 20 to 900*C. It was found by thermogravimetic analysis (TGA) that up to 240*C, the oxidation of SmCo5 does not occur. X-Ray diffraction of the thermogravimetric experimental residue of the SmCo5 powder, heated at 240*C, yielded only the presence of the SmCo5 phase. By X-ray diffraction analysis different crystal forms were identified depending on the maximal heating temperature. The following phases were identified: Sm2O3, Co, CoO, Co3O4 and SmCoO3. According to TG and X-ray results, for each of the investigated temperatures, the corresponding chemical reactions were established. The experimental data from both the thermal and X-ray investigations confirm that the phases of pressing and aligning the SmCo5 powder, in the process of producing  sintered SmCo5 magnets, may be performed without a protective  atmosphere.
PB  - Belgrade : Serbian Chemical Society / Beograd : Srpsko hemijsko društvo
T2  - Journal of the Serbian Chemical Society
T1  - Oxidative processes during heat treatment in intermetallic SmCo5 powder
T1  - Oksidacioni procesi pri zagrevanju praha intermetalnog jedinjenja SmCo5
VL  - 61
IS  - 3
SP  - 189
EP  - 195
UR  - https://hdl.handle.net/21.15107/rcub_cer_4136
ER  - 
@article{
author = "Talijan, Nadežda M. and Milutinović Nikolić, Aleksandra and Jovanović, Žarko",
year = "1996",
abstract = "Understanding of the thermal stability of intermetallic  SmCo5 powder is essential for designing the working atmosphere in all phases of the technological procedure  in the production of sintered SmCo5 magnets to obtain maximal magnetic properties. The thermal stability of the SmCo5 powder with defined chemical composition and particle size was investigated in the interval from 20 to 900*C. It was found by thermogravimetic analysis (TGA) that up to 240*C, the oxidation of SmCo5 does not occur. X-Ray diffraction of the thermogravimetric experimental residue of the SmCo5 powder, heated at 240*C, yielded only the presence of the SmCo5 phase. By X-ray diffraction analysis different crystal forms were identified depending on the maximal heating temperature. The following phases were identified: Sm2O3, Co, CoO, Co3O4 and SmCoO3. According to TG and X-ray results, for each of the investigated temperatures, the corresponding chemical reactions were established. The experimental data from both the thermal and X-ray investigations confirm that the phases of pressing and aligning the SmCo5 powder, in the process of producing  sintered SmCo5 magnets, may be performed without a protective  atmosphere.",
publisher = "Belgrade : Serbian Chemical Society / Beograd : Srpsko hemijsko društvo",
journal = "Journal of the Serbian Chemical Society",
title = "Oxidative processes during heat treatment in intermetallic SmCo5 powder, Oksidacioni procesi pri zagrevanju praha intermetalnog jedinjenja SmCo5",
volume = "61",
number = "3",
pages = "189-195",
url = "https://hdl.handle.net/21.15107/rcub_cer_4136"
}
Talijan, N. M., Milutinović Nikolić, A.,& Jovanović, Ž.. (1996). Oxidative processes during heat treatment in intermetallic SmCo5 powder. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society / Beograd : Srpsko hemijsko društvo., 61(3), 189-195.
https://hdl.handle.net/21.15107/rcub_cer_4136
Talijan NM, Milutinović Nikolić A, Jovanović Ž. Oxidative processes during heat treatment in intermetallic SmCo5 powder. in Journal of the Serbian Chemical Society. 1996;61(3):189-195.
https://hdl.handle.net/21.15107/rcub_cer_4136 .
Talijan, Nadežda M., Milutinović Nikolić, Aleksandra, Jovanović, Žarko, "Oxidative processes during heat treatment in intermetallic SmCo5 powder" in Journal of the Serbian Chemical Society, 61, no. 3 (1996):189-195,
https://hdl.handle.net/21.15107/rcub_cer_4136 .

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