Study of diamond-like coating deposited on the surface of Nd-Fe-B-TYPE sintered magnets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F13%3A86088443" target="_blank" >RIV/61989100:27360/13:86088443 - 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

Study of diamond-like coating deposited on the surface of Nd-Fe-B-TYPE sintered magnets

Popis výsledku v původním jazyce

Diamond-like coating (DLC) was deposited on ground and polished surfaces of Nd-Fe-B sintered magnet (prepared with 4 wt.% TbH2) using reactive ion-beam synthesis directly from ion-beam of a chemical complex substance (cyclohexane). The film deposited isdiamond-like; the fraction of tetragonal carbon-atom bonds is 70 %. The composition and thickness of the coating was analyzed by glow-discharge spectroscopy using a GDS 850A (LECO) spectrometer. The thickness of pure carbon (DLC) layer is 0.08 ?m. The existence of transition layer 0.08/0.07 ?m thick is due to the diffusion (to a lesser degree) and surface roughness. The effect of the coating of surface mechanical characteristics of the magnet was estimated in studying the Vickers hardness of the surfaceand friction coefficient and by nanoindentation as well. The Nd-Fe-B magnets with applied diamond-like coating demonstrate the lower tendency to mechanical cracking. Dry frictional tests showed that, after wear-in process, the DLC increa

Název v anglickém jazyce

Study of diamond-like coating deposited on the surface of Nd-Fe-B-TYPE sintered magnets

Popis výsledku anglicky

Diamond-like coating (DLC) was deposited on ground and polished surfaces of Nd-Fe-B sintered magnet (prepared with 4 wt.% TbH2) using reactive ion-beam synthesis directly from ion-beam of a chemical complex substance (cyclohexane). The film deposited isdiamond-like; the fraction of tetragonal carbon-atom bonds is 70 %. The composition and thickness of the coating was analyzed by glow-discharge spectroscopy using a GDS 850A (LECO) spectrometer. The thickness of pure carbon (DLC) layer is 0.08 ?m. The existence of transition layer 0.08/0.07 ?m thick is due to the diffusion (to a lesser degree) and surface roughness. The effect of the coating of surface mechanical characteristics of the magnet was estimated in studying the Vickers hardness of the surfaceand friction coefficient and by nanoindentation as well. The Nd-Fe-B magnets with applied diamond-like coating demonstrate the lower tendency to mechanical cracking. Dry frictional tests showed that, after wear-in process, the DLC increa

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regionální materiálově technologické výzkumné centrum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2013 : 22nd International Conference on Metallurgy and Materials : conference proceedings : May 15th - 17th 2013, Hotel Voronez I, Brno Czech Republic, EU [CD-ROM]

ISBN

978-80-87294-41-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1358-1363

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

15. 5. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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