Magnetic properties and thermal stabilities of Ga substituted Nd-Fe-Co-B magnets

Endoh, M.; Tokunaga, M.; Harada, Hideki

doi:10.1109/tmag.1987.1065291

Cited by 62 publications

(10 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…dysprosium, terbium, silicon, aluminium, vanadium, molybdenum and tungsten. [24][25][26] It was also reported that Zr and Ni additions help improving corrosion resistance owing to the disappearance of free Nd metal, associated with the eutectic composition. Bala et al 17 reported that a 1 at.-%Cr addition is the most advantageous both in acid and atmospheric corrosion processes.…”

Section: Influence Of Alloying Elementsmentioning

confidence: 99%

Corrosion characteristics of Nd–Fe–B permanent magnets in different environments

Gurrappa¹,

Pandian²

2006

Corrosion Engineering, Science and Technology

View full text Add to dashboard Cite

The corrosion behaviour of Nd-Fe-B, a permanent magnetic alloy, has been studied in two different solutions chosen to simulate the effects of marine and industrial environments. The results showed that the corrosion rate of the alloy was about nine times higher in the simulated industrial (sulphate) environment when compared to the marine (chloride) environment. The studies also revealed that the alloy could not form a protective layer on its surface in either of the environments studied, but was resistant to pitting corrosion. Scanning electron microscopy results indicated that the magnetic alloy undergoes preferential grain boundary corrosion in both environments although the corrosion rate varies considerably. A sequence of steps that result in the loss of magnetic properties under corrosive conditions has been proposed. Furthermore, the effect of alloying elements on the corrosion behaviour and magnetic properties of the alloy was also discussed. The importance of surface engineering techniques for improving the corrosion resistance of Nd-Fe-B permanent magnets was highlighted and a suitable surface coating system was proposed.

show abstract

Section: Influence Of Alloying Elementsmentioning

confidence: 99%

Corrosion characteristics of Nd–Fe–B permanent magnets in different environments

Gurrappa¹,

Pandian²

2006

Corrosion Engineering, Science and Technology

View full text Add to dashboard Cite

show abstract

“…Die ternäre Legierung Nd‐Fe‐B wurde im Fall der Altmagnete ergänzt durch die Seltenen Erden Dysprosium und Praseodym, das Übergangsmetall Cobalt sowie geringere aber für die magnetischen Eigenschaften wichtige Anteile an Aluminium, Kupfer, Niob und Gallium. Cobalt erhöht die Curie‐Temperatur des Materials und führt zu einer verbesserten Korrosionsbeständigkeit vor allem der neodymreichen Phasen 29 – 32, während geringe Mengen Aluminium und Niob die Koerzitivfeldstärke von gesinterten Magneten erhöhen 33. Die chemische Zusammensetzung dieser Altmagnete unterscheidet sich signifikant von der eines typischen kunststoffgebundenen oder heißumgeformten Magneten.…”

Section: Verfahrenunclassified

Verfahren zum Recycling von seltenerdhaltigen Permanentmagneten

Gauß

Diehl

Brouwer

et al. 2015

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Permanent magnets are crucial for numerous technologies. The development towards a growing use of renewable energies will further increase the demand for these kinds of materials. However, even high-grade, costly manufactured magnets are not recycled on an industrial scale today. The metallurgical and hydrogen-based recycling processes described here are based on a materials recycling approach, i.e., they aim at regaining the permanent magnet alloy. Both approaches are comparatively energy-efficient compared to traditional hydrometallurgical processes

show abstract

“…and Ga [3] in NdDyFeCoB or NdFeCoB magnets not only enhance the coercivity but also improve the thermal stability. In this work, the intrinsic magnetic properties of Nd2 (Fel-,T,),, B (T = Nb, Mo, Ga) and the permanent magnetic behavior of NdFeNbB sintered magnets are investigated.…”

Section: The Effects Of Addition Of Nb Mo and Ga On The Magnetic Promentioning

confidence: 99%

THE EFFECTS OF ADDITION OF Nb, Mo AND Ga ON THE MAGNETIC PROPERTIES OF Nd-Fe-B ALLOYS

Wang

Xin-wen

et al. 1988

J. Phys. Colloques

View full text Add to dashboard Cite

show abstract

Magnetic properties and thermal stabilities of Ga substituted Nd-Fe-Co-B magnets

Cited by 62 publications

References 5 publications

Corrosion characteristics of Nd–Fe–B permanent magnets in different environments

Corrosion characteristics of Nd–Fe–B permanent magnets in different environments

Verfahren zum Recycling von seltenerdhaltigen Permanentmagneten

THE EFFECTS OF ADDITION OF Nb, Mo AND Ga ON THE MAGNETIC PROPERTIES OF Nd-Fe-B ALLOYS

Contact Info

Product

Resources

About