Erosion-Resistant Electrode Coatings of Vacuum and Gas-Discharge Switching Devices

The paper presents the results of numerical modeling of thermomechanical stresses and thermal fields for conditions of erosion-resistant electrode coatings of vacuum and gas discharge switching devices with W-Ti-Cu and W-Mo-Cu structures at local temperature and electric current influence in axially...

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Bibliographic Details
Published in:MRS Advances 2016-01, Vol.1 (17), p.1177-1182
Main Authors: Karabanov, Sergey, Suvorov, Dmitry, Gololobov, Gennady, Gurov, Victor, Slivkin, Evgeny, Tarabrin, Dmitry
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Biomaterials
Characterization and Evaluation of Materials
Materials Engineering
Materials Science
Nanotechnology
Online Access:Get full text
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Summary:The paper presents the results of numerical modeling of thermomechanical stresses and thermal fields for conditions of erosion-resistant electrode coatings of vacuum and gas discharge switching devices with W-Ti-Cu and W-Mo-Cu structures at local temperature and electric current influence in axially symmetrical approximation. The efficiency assessment of intermediate layers introduction by comparison of interlaminar mechanical stresses is carried out. It is shown that introduction of titanium interlayer in the coating with W Cu structure results in considerable (more than two times) decrease of internal thermomechanical stresses between layers that increases coating resistance to delamination. The optimum value of interlayer thickness at which the minimum thermomechanical stresses are provided is determined.
ISSN:2731-5894
2059-8521
DOI:10.1557/adv.2015.14