Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796-xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity

A. G. Popov; V. S. Gaviko; V. V. Popov; O. A. Golovnia; A. V. Protasov; E. G. Gerasimov; A. V. Ogurtsov; M. K. Sharin; R. Gopalan

doi:10.1007/s11837-018-3240-2

Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796-xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity

A. G. Popov, V. S. Gaviko, V. V. Popov, O. A. Golovnia, A. V. Protasov, E. G. Gerasimov, A. V. Ogurtsov, M. K. Sharin, R. Gopalan

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The structure and temperature stability of high-temperature permanent magnets Sm(Co_0.796−xFe_0.177Cu_xZr_0.027)_6.63 (x = 0.117 and 0.130) were studied using x-ray diffraction analysis, thermomagnetic analysis, and scanning and transmission electron microscopy. The magnets have a nanocrystalline cellular structure composed of the R2:17 cell phase, 1:5 boundary phase (27–28% by volume), and Z-phase platelets. The 1:5 phase is formed in the course of isothermal annealing at 850°C and exists in the entire temperature range from 850°C to 400°C. The Curie temperature of the R2:17 and 1:5 phases is approximately 815°C and 580°C, respectively. The magnets have the following hysteresis properties at room temperature: B_r = 890–920 mT, _JH_c = 2.4–2.6 MA/m, _BH_c = 629–676 kA/m, and (BH)_m = 143–159 kJ/m³. In the temperature range of 20–500°C, the temperature coefficients of B_r and _JH_c of the magnets (x = 0.117 and 0.130) do not exceed |− 0.070| and |− 0.172|%/°C, respectively.

Original language	English
Pages (from-to)	559-566
Number of pages	8
Journal	JOM
Volume	71
Issue number	2
DOIs	https://doi.org/10.1007/s11837-018-3240-2
State	Published - Feb 2019
Externally published	Yes

Access to Document

10.1007/s11837-018-3240-2

Cite this

Popov, A. G., Gaviko, V. S., Popov, V. V., Golovnia, O. A., Protasov, A. V., Gerasimov, E. G., Ogurtsov, A. V., Sharin, M. K., & Gopalan, R. (2019). Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796-xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity. JOM, 71(2), 559-566. https://doi.org/10.1007/s11837-018-3240-2

@article{264616b2ad724318a7ef6a6e31890b49,

title = "Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796-xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity",

abstract = "The structure and temperature stability of high-temperature permanent magnets Sm(Co0.796−xFe0.177CuxZr0.027)6.63 (x = 0.117 and 0.130) were studied using x-ray diffraction analysis, thermomagnetic analysis, and scanning and transmission electron microscopy. The magnets have a nanocrystalline cellular structure composed of the R2:17 cell phase, 1:5 boundary phase (27–28\% by volume), and Z-phase platelets. The 1:5 phase is formed in the course of isothermal annealing at 850°C and exists in the entire temperature range from 850°C to 400°C. The Curie temperature of the R2:17 and 1:5 phases is approximately 815°C and 580°C, respectively. The magnets have the following hysteresis properties at room temperature: Br = 890–920 mT, JHc = 2.4–2.6 MA/m, BHc = 629–676 kA/m, and (BH)m = 143–159 kJ/m3. In the temperature range of 20–500°C, the temperature coefficients of Br and JHc of the magnets (x = 0.117 and 0.130) do not exceed |− 0.070| and |− 0.172|\%/°C, respectively.",

author = "Popov, \{A. G.\} and Gaviko, \{V. S.\} and Popov, \{V. V.\} and Golovnia, \{O. A.\} and Protasov, \{A. V.\} and Gerasimov, \{E. G.\} and Ogurtsov, \{A. V.\} and Sharin, \{M. K.\} and R. Gopalan",

note = "Publisher Copyright: {\textcopyright} 2018, The Minerals, Metals \& Materials Society.",

year = "2019",

month = feb,

doi = "10.1007/s11837-018-3240-2",

language = "אנגלית",

volume = "71",

pages = "559--566",

journal = "JOM",

issn = "1047-4838",

publisher = "Minerals, Metals and Materials Society",

number = "2",

}

Popov, AG, Gaviko, VS, Popov, VV, Golovnia, OA, Protasov, AV, Gerasimov, EG, Ogurtsov, AV, Sharin, MK & Gopalan, R 2019, 'Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796-xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity', JOM, vol. 71, no. 2, pp. 559-566. https://doi.org/10.1007/s11837-018-3240-2

TY - JOUR

T1 - Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796-xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity

AU - Popov, A. G.

AU - Gaviko, V. S.

AU - Popov, V. V.

AU - Golovnia, O. A.

AU - Protasov, A. V.

AU - Gerasimov, E. G.

AU - Ogurtsov, A. V.

AU - Sharin, M. K.

AU - Gopalan, R.

PY - 2019/2

Y1 - 2019/2

N2 - The structure and temperature stability of high-temperature permanent magnets Sm(Co0.796−xFe0.177CuxZr0.027)6.63 (x = 0.117 and 0.130) were studied using x-ray diffraction analysis, thermomagnetic analysis, and scanning and transmission electron microscopy. The magnets have a nanocrystalline cellular structure composed of the R2:17 cell phase, 1:5 boundary phase (27–28% by volume), and Z-phase platelets. The 1:5 phase is formed in the course of isothermal annealing at 850°C and exists in the entire temperature range from 850°C to 400°C. The Curie temperature of the R2:17 and 1:5 phases is approximately 815°C and 580°C, respectively. The magnets have the following hysteresis properties at room temperature: Br = 890–920 mT, JHc = 2.4–2.6 MA/m, BHc = 629–676 kA/m, and (BH)m = 143–159 kJ/m3. In the temperature range of 20–500°C, the temperature coefficients of Br and JHc of the magnets (x = 0.117 and 0.130) do not exceed |− 0.070| and |− 0.172|%/°C, respectively.

AB - The structure and temperature stability of high-temperature permanent magnets Sm(Co0.796−xFe0.177CuxZr0.027)6.63 (x = 0.117 and 0.130) were studied using x-ray diffraction analysis, thermomagnetic analysis, and scanning and transmission electron microscopy. The magnets have a nanocrystalline cellular structure composed of the R2:17 cell phase, 1:5 boundary phase (27–28% by volume), and Z-phase platelets. The 1:5 phase is formed in the course of isothermal annealing at 850°C and exists in the entire temperature range from 850°C to 400°C. The Curie temperature of the R2:17 and 1:5 phases is approximately 815°C and 580°C, respectively. The magnets have the following hysteresis properties at room temperature: Br = 890–920 mT, JHc = 2.4–2.6 MA/m, BHc = 629–676 kA/m, and (BH)m = 143–159 kJ/m3. In the temperature range of 20–500°C, the temperature coefficients of Br and JHc of the magnets (x = 0.117 and 0.130) do not exceed |− 0.070| and |− 0.172|%/°C, respectively.

UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_api01&SrcAuth=WosAPI&KeyUT=WOS:000457406800015&DestLinkType=FullRecord&DestApp=WOS_CPL

U2 - 10.1007/s11837-018-3240-2

DO - 10.1007/s11837-018-3240-2

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

SN - 1047-4838

VL - 71

SP - 559

EP - 566

JO - JOM

JF - JOM

IS - 2

ER -

Structure and Magnetic Properties of Heat-Resistant Sm(Co<sub>0.796-<i>x</i></sub>Fe<sub>0.177</sub>Cu<i><sub>x</sub></i>Zr<sub>0.027</sub>)<sub>6.63</sub> Permanent Magnets with High Coercivity

Abstract

Access to Document

Other files and links

Fingerprint

Cite this