The preparation and structural analysis of La-Fe-Si-based alloys and Nd-Fe-B-based alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F14%3A86092211" target="_blank" >RIV/61989100:27360/14:86092211 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The preparation and structural analysis of La-Fe-Si-based alloys and Nd-Fe-B-based alloys

Popis výsledku v původním jazyce

The La-Fe-Si-based alloys were prepared by vacuum induction melting. The diameter of the final casts was 15 mm. One part of these alloys was stayed in as-cast state, other part was heat treated according to the required conditions (1150 °C, 22 hs, cooling in water) or hot isostatic pressed (1150 °C, 4 hs, 100 MPa). The Nd-Fe-B-based alloys were prepared by vacuum induction melting followed by melt pouring on water-cooled rotating copper cylinder (v = 2-4 m/s). The advantage of this method is the prevention of formation of long dendrites of magnetically soft phase -Fe, and Nd-rich phase is finely and homogeneously distributed throughout the volume of material. The material obtained in the form of strips had the thickness from 0.3 to 0.5 mm. The high resolution field emission gun-scanning electron microscope QUANTA 450 FEG equipped by EDX microprobe was used for the determination of chemical composition of individual phases and the study of structural characteristics.

Název v anglickém jazyce

The preparation and structural analysis of La-Fe-Si-based alloys and Nd-Fe-B-based alloys

Popis výsledku anglicky

The La-Fe-Si-based alloys were prepared by vacuum induction melting. The diameter of the final casts was 15 mm. One part of these alloys was stayed in as-cast state, other part was heat treated according to the required conditions (1150 °C, 22 hs, cooling in water) or hot isostatic pressed (1150 °C, 4 hs, 100 MPa). The Nd-Fe-B-based alloys were prepared by vacuum induction melting followed by melt pouring on water-cooled rotating copper cylinder (v = 2-4 m/s). The advantage of this method is the prevention of formation of long dendrites of magnetically soft phase -Fe, and Nd-rich phase is finely and homogeneously distributed throughout the volume of material. The material obtained in the form of strips had the thickness from 0.3 to 0.5 mm. The high resolution field emission gun-scanning electron microscope QUANTA 450 FEG equipped by EDX microprobe was used for the determination of chemical composition of individual phases and the study of structural characteristics.

Druh

V_souhrn - Souhrnná výzkumná zpráva

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Počet stran výsledku

14

Místo vydání

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Název nakladatele resp. objednatele

FUNDAÇ?O DE ENSINO E ENGENHARIA DE SANTA CATARINA

Verze

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