Verfahren zur Synthetisierung eines Magnetischen Materials

Details

Veröffentlichungs-Nr.

EP3319093

Aktenzeichen

EP17186926

Anmeldetag

18. August 2017

Veröffentlichung

9. Oktober 2019

Erteilung

9. Oktober 2019

Rechtsraum

EP

IPC

H01F1/057H01F41/02B22F1/00B22F9/24C22C1/06C22C33/02C22C38/00C22C38/06C22C38/10// B22F3/24

Abstract

A process for producing Co, Al alloyed NdFeB nanoparticles, by a microwave assisted combustion process, followed by a reduction diffusion process, comprises the steps of: preparing a first solution of boric acid dissolved in 4 N HN0 3 ; dissolving iron nitrate nonahydrate, neodymium nitrate hexahydrate, cobalt nitrate hexahydrate, aluminium nitrate, and the first solution in deionized water to form a second solution; adding glycine to the second solution in a molar ratio of 1:1 to form a third solution; subjecting the third solution to microwave radiation, thereby forming an first powder of NdFeCoAlB oxides; mixing the first powder with calcium hydride in a mass ratio of 1:1.1 (NdFeCoAlB oxides:CaH 2 ) to form a second powder, compacted into a powder block; annealing the second powder in a vacuum furnace; washing the annealed second powder with a solution of ethylenediaminetetraacetic acid; and vacuum drying the second powder.

Anmelder

Firma

Rolls-Royce plc

Land

🇬🇧 Großbritannien

Fachgebiete