Protective Alumina Coatings Prepared by Aerosol Deposition on Magnetocaloric Gadolinium Elements

被引：13
|
作者：
Sadl, Matej [1 ,2 ]
Tomc, Urban [3 ]
Prah, Uros [1 ,2 ]
Ursic, Hana [1 ,2 ]
机构：
[1] Jozef Stefan Inst, Ljubljana, Slovenia
[2] Jozef Stefan Int Postgrad Sch, Ljubljana, Slovenia
[3] Univ Ljubljana, Fac Mech Engn, Ljubljana, Slovenia
来源：
INFORMACIJE MIDEM-JOURNAL OF MICROELECTRONICS ELECTRONIC COMPONENTS AND MATERIALS | 2019年 / 49卷 / 03期
关键词：
protective alumina coating; aerosol deposition; magnetocaloric gadolinium; THICK-FILMS; TEMPERATURE; CORROSION; BEHAVIOR;
D O I：
10.33180/InfMIDEM2019.306
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 degrees 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(-1)m(-1).
引用
收藏
页码：177 / 182
页数：6
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