A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content
Apstrakt
Changes in the phase composition and magnetic properties of three types of commercial Nd-Fe-B alloys with different Nd content - low (10-12 wt%), near stoichiometric (21-25 wt%) and rich (26-29 wt%) caused by thermomagnetic analysis (TM) were observed in regard to optimal magnetic state. Phase compositions of investigated alloys before and after TM measurement up to 800°C were compared using 57Fe Mössbauer spectroscopy and X-Ray analysis. The TM measurements decompose all three materials and the main products of decomposition process α-Fe and Fe2B phase. Observed changes in structure and phase composition had direct influence on magnetic properties. Loss of magnetic properties induced by thermal decomposition is clearly illustrated on corresponding SQUID hysteresis loops.
Istraživane su promene faznog sastava i magnetnih svojstava u odnosu na optimalno magnetno stanje za tri tipa komercijalnih Nd-Fe-B legura sa različitim sadržajem neodijuma - niskim (10-12 mas %), bliskim stehiometrijskom (21-25 mas %) i visokim (26-29 mas %), prouzrokovanih termomagnetnim (TM) merenjima. Fazni sastavi istraživanih legura pre i posle TM merenja do 800°C su poređeni koršćenjem 57Fe Mössbauer spektroskopske fazne analize i rendgensko-difraktometrijske analize. Usled termomagnetnih merenja dolazi do dekompozicije sva tri istraživana materijala i kao osnovni produkti dekompozicije nastaju α-Fe i Fe2B faze. Posmatrane promene u strukturi i faznom sastavu imaju direktan uticaj na magnetna svojstva. Gubitak magnetnih svojstava nastao usled termičke dekompozicije je jasno ilustrovan odgovarajućim SQUID histerezisnim petljama.
Ključne reči:
Nd-Fe-B alloys / thermomagnetic measurements / phase composition / structure / magnetic properties / Nd-Fe-B legure / termomagnetna merenja / fazni sastav / struktura / magnetna svojstvaIzvor:
Science of Sintering, 2009, 41, 3, 337-345Izdavač:
- International Institute for the Science of Sintering, Beograd
Finansiranje / projekti:
DOI: 10.2298/SOS0903337G
ISSN: 0350-820X
WoS: 000275835500012
Scopus: 2-s2.0-76649140137
Institucija/grupa
IHTMTY - JOUR AU - Grujić, Aleksandar AU - Žak, Tomas AU - Talijan, Nadežda M. AU - Stajić-Trošić, Jasna AU - Ćosović, Vladan PY - 2009 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/522 AB - Changes in the phase composition and magnetic properties of three types of commercial Nd-Fe-B alloys with different Nd content - low (10-12 wt%), near stoichiometric (21-25 wt%) and rich (26-29 wt%) caused by thermomagnetic analysis (TM) were observed in regard to optimal magnetic state. Phase compositions of investigated alloys before and after TM measurement up to 800°C were compared using 57Fe Mössbauer spectroscopy and X-Ray analysis. The TM measurements decompose all three materials and the main products of decomposition process α-Fe and Fe2B phase. Observed changes in structure and phase composition had direct influence on magnetic properties. Loss of magnetic properties induced by thermal decomposition is clearly illustrated on corresponding SQUID hysteresis loops. AB - Istraživane su promene faznog sastava i magnetnih svojstava u odnosu na optimalno magnetno stanje za tri tipa komercijalnih Nd-Fe-B legura sa različitim sadržajem neodijuma - niskim (10-12 mas %), bliskim stehiometrijskom (21-25 mas %) i visokim (26-29 mas %), prouzrokovanih termomagnetnim (TM) merenjima. Fazni sastavi istraživanih legura pre i posle TM merenja do 800°C su poređeni koršćenjem 57Fe Mössbauer spektroskopske fazne analize i rendgensko-difraktometrijske analize. Usled termomagnetnih merenja dolazi do dekompozicije sva tri istraživana materijala i kao osnovni produkti dekompozicije nastaju α-Fe i Fe2B faze. Posmatrane promene u strukturi i faznom sastavu imaju direktan uticaj na magnetna svojstva. Gubitak magnetnih svojstava nastao usled termičke dekompozicije je jasno ilustrovan odgovarajućim SQUID histerezisnim petljama. PB - International Institute for the Science of Sintering, Beograd T2 - Science of Sintering T1 - A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content VL - 41 IS - 3 SP - 337 EP - 345 DO - 10.2298/SOS0903337G ER -
@article{ author = "Grujić, Aleksandar and Žak, Tomas and Talijan, Nadežda M. and Stajić-Trošić, Jasna and Ćosović, Vladan", year = "2009", abstract = "Changes in the phase composition and magnetic properties of three types of commercial Nd-Fe-B alloys with different Nd content - low (10-12 wt%), near stoichiometric (21-25 wt%) and rich (26-29 wt%) caused by thermomagnetic analysis (TM) were observed in regard to optimal magnetic state. Phase compositions of investigated alloys before and after TM measurement up to 800°C were compared using 57Fe Mössbauer spectroscopy and X-Ray analysis. The TM measurements decompose all three materials and the main products of decomposition process α-Fe and Fe2B phase. Observed changes in structure and phase composition had direct influence on magnetic properties. Loss of magnetic properties induced by thermal decomposition is clearly illustrated on corresponding SQUID hysteresis loops., Istraživane su promene faznog sastava i magnetnih svojstava u odnosu na optimalno magnetno stanje za tri tipa komercijalnih Nd-Fe-B legura sa različitim sadržajem neodijuma - niskim (10-12 mas %), bliskim stehiometrijskom (21-25 mas %) i visokim (26-29 mas %), prouzrokovanih termomagnetnim (TM) merenjima. Fazni sastavi istraživanih legura pre i posle TM merenja do 800°C su poređeni koršćenjem 57Fe Mössbauer spektroskopske fazne analize i rendgensko-difraktometrijske analize. Usled termomagnetnih merenja dolazi do dekompozicije sva tri istraživana materijala i kao osnovni produkti dekompozicije nastaju α-Fe i Fe2B faze. Posmatrane promene u strukturi i faznom sastavu imaju direktan uticaj na magnetna svojstva. Gubitak magnetnih svojstava nastao usled termičke dekompozicije je jasno ilustrovan odgovarajućim SQUID histerezisnim petljama.", publisher = "International Institute for the Science of Sintering, Beograd", journal = "Science of Sintering", title = "A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content", volume = "41", number = "3", pages = "337-345", doi = "10.2298/SOS0903337G" }
Grujić, A., Žak, T., Talijan, N. M., Stajić-Trošić, J.,& Ćosović, V.. (2009). A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content. in Science of Sintering International Institute for the Science of Sintering, Beograd., 41(3), 337-345. https://doi.org/10.2298/SOS0903337G
Grujić A, Žak T, Talijan NM, Stajić-Trošić J, Ćosović V. A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content. in Science of Sintering. 2009;41(3):337-345. doi:10.2298/SOS0903337G .
Grujić, Aleksandar, Žak, Tomas, Talijan, Nadežda M., Stajić-Trošić, Jasna, Ćosović, Vladan, "A comparative thermomagnetic study of melt-spun Nd-Fe-B alloys with different Nd content" in Science of Sintering, 41, no. 3 (2009):337-345, https://doi.org/10.2298/SOS0903337G . .