Protective properties and structure of amorphous alumophosphate coatings for niobium alloys

Protective properties and structure of amorphous alumophosphate coatings for niobium alloys Results of thermal tests of specimens of a niobium alloy with a protective coating in gas media with various contents of oxygen are described. The microhardness of the metal under the coating and the coating itself has been studied before and after the tests. The near-contact regions of the metal and the coating have been studied with the help of electron microscopy, x-ray spectral microprobe, and x-ray phase analyses. Data on the structure and the elemental and phase compositions of the near-contact regions are presented. The processes that occur in the formation and subsequent long-term annealing of the coating and that cause structural changes in it are described, which provide cohesion between the substrate and the coating and a high efficiency of protection. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Protective properties and structure of amorphous alumophosphate coatings for niobium alloys

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Publisher
Springer US
Copyright
Copyright © 2000 by Kluwer Academic/Plenum Publishers
Subject
Chemistry; Characterization and Evaluation of Materials; Materials Science; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/BF02693815
Publisher site
See Article on Publisher Site

Abstract

Results of thermal tests of specimens of a niobium alloy with a protective coating in gas media with various contents of oxygen are described. The microhardness of the metal under the coating and the coating itself has been studied before and after the tests. The near-contact regions of the metal and the coating have been studied with the help of electron microscopy, x-ray spectral microprobe, and x-ray phase analyses. Data on the structure and the elemental and phase compositions of the near-contact regions are presented. The processes that occur in the formation and subsequent long-term annealing of the coating and that cause structural changes in it are described, which provide cohesion between the substrate and the coating and a high efficiency of protection.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Aug 26, 2007

References

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