PROPERTIES OF Ni/Cu/Ni AND Ni COATINGS FOR CORROSION PROTECTION OF NdFeB BASE MAGNETS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F13%3A86089164" target="_blank" >RIV/61989100:27360/13:86089164 - 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

PROPERTIES OF Ni/Cu/Ni AND Ni COATINGS FOR CORROSION PROTECTION OF NdFeB BASE MAGNETS

Popis výsledku v původním jazyce

Economical and useful NdFeB magnets, produced by powder metallurgy, are sensitive to corrosion, especially in wet or water environments, therefore protective galvanic coatings of metals (Ni, Cu, Zn) are mostly applied on their surface. This contributiondeals with verification and comparison of corrosion properties of selected commercial combined Ni/Cu/Ni coating and simple Ni coating (made in laboratory) on NdFeB magnet type in the shape of a ballet and cylinder. Chemical composition of coatings and ofbasic material was verified by microanalysis and magnetic phase of the type Nd2Fe14B was identified. According to the performed standard salt spray test was found out that corrosion resistance of selected magnets with tested coatings is low. The degradation started from rust points (pits) and stain, through lifting and cracking of coatings to their peeling and then intensive corrosion of the base material under action of galvanic cell. Metallographic analysis after test has confirmed th

Název v anglickém jazyce

PROPERTIES OF Ni/Cu/Ni AND Ni COATINGS FOR CORROSION PROTECTION OF NdFeB BASE MAGNETS

Popis výsledku anglicky

Economical and useful NdFeB magnets, produced by powder metallurgy, are sensitive to corrosion, especially in wet or water environments, therefore protective galvanic coatings of metals (Ni, Cu, Zn) are mostly applied on their surface. This contributiondeals with verification and comparison of corrosion properties of selected commercial combined Ni/Cu/Ni coating and simple Ni coating (made in laboratory) on NdFeB magnet type in the shape of a ballet and cylinder. Chemical composition of coatings and ofbasic material was verified by microanalysis and magnetic phase of the type Nd2Fe14B was identified. According to the performed standard salt spray test was found out that corrosion resistance of selected magnets with tested coatings is low. The degradation started from rust points (pits) and stain, through lifting and cracking of coatings to their peeling and then intensive corrosion of the base material under action of galvanic cell. Metallographic analysis after test has confirmed th

Druh

D - Stať ve sborníku

CEP obor

JK - Koroze a povrchové úpravy materiálu

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

5

Strana od-do

1-5

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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