Micromechanical and Electrophysical Properties of Al sub(2)O sub(3) Nanostructured Dielectric Coatings on Plane Heating Elements

By using the ion-plasma discharge system, an Al sub(2)O sub(3) dielectric layer with nanoscale structure is formed on a plane heating element made of AMg2 aluminum-magnesium alloy. The sprayed Al sub(2)O sub(3) layer consists of two sublayers with a total thickness of 13-15 mu m and grain sizes of 4...

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Published inMaterials science (New York, N.Y.) Vol. 52; no. 1; pp. 50 - 55
Main Authors Duryahina, Z A, Kovbasyuk, T M, Bespalov, SA, Pidkova, VYa
Format Journal Article
LanguageEnglish
Published 01.07.2016
Subjects
Adhesion
Alloy systems
Aluminum base alloys
Aluminum oxide
Heating elements
Materials science
Nanostructure
Planes
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Summary:By using the ion-plasma discharge system, an Al sub(2)O sub(3) dielectric layer with nanoscale structure is formed on a plane heating element made of AMg2 aluminum-magnesium alloy. The sprayed Al sub(2)O sub(3) layer consists of two sublayers with a total thickness of 13-15 mu m and grain sizes of 4-306 nm. The surface roughness is equal to 50-60 nm. For the adhesion coefficient HSC ~ 1, the Meyer microhardness of the Al sub(2)O sub(3) layer is equal to 0.788 and the Young modulus is equal to 75.433 GPa.
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ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-016-9925-1