Fracture Strength and Surface Magnetic Flux Uniformity in an
Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet

J 2018

Fracture Strength and Surface Magnetic Flux Uniformity in an Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet

FARZAM MEHR, Navid, Sahand BEHRANGI, Milad AHMADI a Abbas KIANVASH

Základní údaje

Originální název

Fracture Strength and Surface Magnetic Flux Uniformity in an Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet

Autoři

FARZAM MEHR, Navid, Sahand BEHRANGI, Milad AHMADI a Abbas KIANVASH

Vydání

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, NEW YORK, SPRINGER, 2018, 1059-9495

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.476

DOI

http://dx.doi.org/10.1007/s11665-018-3494-4

UT WoS

000440433900018

Klíčová slova anglicky

magnetic properties; Nd-Fe-B; polymer-bonded ring-shaped magnets; surface magnetic flux uniformity; tensile fracture strength

Štítky

RIV ne

Změněno: 25. 11. 2021 16:08, Sahand Behrangi, M.Sc.

Anotace

V originále

Ring-shaped (RS) polymer-bonded magnets were produced from a mixture of an isotropic nanocrystalline Nd-Fe-B powder with a nominal composition of 59.8 wt.% Fe, 29 wt.% Nd, 5 wt.% Zr, 4.8 wt.% Co and 1.4 wt.% B and a variety of epoxy resins as binders, using a compaction-molding technique. The morphology and average particle size of the powders are determined by an SEM. The magnetic properties of the magnets were measured using a permeameter. Magnetic flux on the surface of the magnets was determined by a Gauss meter. The mechanical properties of the RS specimens were determined using a tensile fracture strength (FS) test. The effects of polymer type and amount, hardener amount, applied pressing pressure and curing temperature and time on FS were investigated. The experimental results showed that at optimal conditions of 8 wt.% solid epoxy, 3.5 wt.% solid hardener, a pressing pressure of 900 MPa and a curing time of 8 h at 170 degrees C, a maximum tensile strength of similar to 36 MPa was achieved. Surface magnetic flux uniformity in optimal mechanical conditions was also found to be optimum at around +/- 40 G, which is one of the best flux uniformities in bonded magnets.

Citovat

FARZAM MEHR, Navid, Sahand BEHRANGI, Milad AHMADI a Abbas KIANVASH. Fracture Strength and Surface Magnetic Flux Uniformity in an Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE. NEW YORK: SPRINGER, 2018, roč. 27, č. 8, s. 3972-3977. ISSN 1059-9495. Dostupné z: https://dx.doi.org/10.1007/s11665-018-3494-4.

@article{1805134,
   author = {Farzam Mehr, Navid and Behrangi, Sahand and Ahmadi, Milad and Kianvash, Abbas},
   article_location = {NEW YORK},
   article_number = {8},
   doi = {http://dx.doi.org/10.1007/s11665-018-3494-4},
   keywords = {magnetic properties; Nd-Fe-B; polymer-bonded ring-shaped magnets; surface magnetic flux uniformity; tensile fracture strength},
   language = {eng},
   issn = {1059-9495},
   journal = {JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE},
   title = {Fracture Strength and Surface Magnetic Flux Uniformity in an Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet},
   volume = {27},
   year = {2018}
}

TY  - JOUR
ID  - 1805134
AU  - Farzam Mehr, Navid - Behrangi, Sahand - Ahmadi, Milad - Kianvash, Abbas
PY  - 2018
TI  - Fracture Strength and Surface Magnetic Flux Uniformity in an Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet
JF  - JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
VL  - 27
IS  - 8
SP  - 3972-3977
EP  - 3972-3977
PB  - SPRINGER
SN  - 10599495
KW  - magnetic properties
KW  - Nd-Fe-B
KW  - polymer-bonded ring-shaped magnets
KW  - surface magnetic flux uniformity
KW  - tensile fracture strength
N2  - Ring-shaped (RS) polymer-bonded magnets were produced from a mixture of an isotropic nanocrystalline Nd-Fe-B powder with a nominal composition of 59.8 wt.% Fe, 29 wt.% Nd, 5 wt.% Zr, 4.8 wt.% Co and 1.4 wt.% B and a variety of epoxy resins as binders, using a compaction-molding technique. The morphology and average particle size of the powders are determined by an SEM. The magnetic properties of the magnets were measured using a permeameter. Magnetic flux on the surface of the magnets was determined by a Gauss meter. The mechanical properties of the RS specimens were determined using a tensile fracture strength (FS) test. The effects of polymer type and amount, hardener amount, applied pressing pressure and curing temperature and time on FS were investigated. The experimental results showed that at optimal conditions of 8 wt.% solid epoxy, 3.5 wt.% solid hardener, a pressing pressure of 900 MPa and a curing time of 8 h at 170 degrees C, a maximum tensile strength of similar to 36 MPa was achieved. Surface magnetic flux uniformity in optimal mechanical conditions was also found to be optimum at around +/- 40 G, which is one of the best flux uniformities in bonded magnets.
ER  -

FARZAM MEHR, Navid, Sahand BEHRANGI, Milad AHMADI a Abbas KIANVASH. Fracture Strength and Surface Magnetic Flux Uniformity in an Isotropic Polymer-Bonded Ring-Shaped Nd-Fe-B Magnet. \textit{JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE}. NEW YORK: SPRINGER, 2018, roč.~27, č.~8, s.~3972-3977. ISSN~1059-9495. Dostupné z: https://dx.doi.org/10.1007/s11665-018-3494-4.

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