Matej Šadl (Author), Urban Tomc (Author), Uroš Prah (Author), Hana Uršič (Author)

Abstract

In this work the preparation of a protective insulating alumina coating on magnetocaloric gadolinium elements was investigated. In order to prepare a dense ceramic coating at room temperature the aerosol deposition technique was used. The study reveals that the powder morphology and particle size are important parameters that influence the deposition efficiency, powder packing and consequently also the density and functional properties of the alumina coating. The optimal powder pre-deposition treatment includes heating the powder to 1150 °C, followed by milling. The deposition of this powder resulted in the preparation of dense alumina coatings with a low specific electrical conductivity of 6.4.10-14 [Omega]-1m-1.

Keywords

protective alumina coating;aerosol deposition;magnetocaloric gadolinium;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.5(045)
COBISS: 16935195 Link will open in a new window
ISSN: 0352-9045
Views: 368
Downloads: 94
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Other data

Secondary language: Slovenian
Secondary title: Korundna zaščita magnetokaloričnih hladilnih elementov pripravljena z metodo nanašanja delcev v curku aerosola
Secondary keywords: korundne zaščitne prevleke;nanašanje delcev v curku aerosola;magnetokalorični gadolinij;
URN: URN:NBN:SI
Type (COBISS): Article
Pages: str. 177-182
Volume: ǂLetn. ǂ49
Issue: ǂšt. ǂ3
Chronology: 2019
ID: 12721874