Title
Copper-MAX-phase composite coatings obtained by electro-co-deposition: A promising material for electrical contacts
Date Issued
15 July 2017
Access level
metadata only access
Resource Type
journal article
Author(s)
Technische Universität Ilmenau
Technische Universität Ilmenau
Publisher(s)
Elsevier B.V.
Abstract
A new and promising composite coating system comprising copper and MAX phase particles (commercial powder consisting of Ti2AlC and Ti3AlC2) was prepared electrochemically using direct current electrodeposition. The MAX phase particles, in micro-scale sizes, were successfully incorporated (up to 3 wt%) and well distributed in the copper coating. The change in the coating properties such as hardness, electrical contact resistance as well as crystallographic structure was investigated in layers having thickness values of about 50 μm. Furthermore, the behavior of the composite layers under electrical arcing conditions was studied. Beside an increase of the hardness and a slight change in the structure due to particle incorporation, it could be shown that the electrical contact resistance of the composite coatings is similar to the one of pure copper films deposited at the same conditions. An improved behavior under electrical arcing was found for the composite coatings. After the arcing experiments no significant changes of the morphology of the composite coatings were found, whereas, the pure copper layers showed melting and recrystallization. The composite layers are, therefore, a suitable alternative for electrical applications such as electrical switching devices.
Start page
219
End page
228
Volume
321
Language
English
OCDE Knowledge area
Ingeniería eléctrica, Ingeniería electrónica
Subjects
Scopus EID
2-s2.0-85018323995
Source
Surface and Coatings Technology
ISSN of the container
02578972
Sponsor(s)
The German Research Foundation (DFG) supports this work partially under grant Scha632/10. MC acknowledges the financial support by the German Academic Exchange Service (DAAD) through a PhD scholarship. The authors also gratefully thank Dr. B. Halbedel (Group for Inorganic-Nonmetallic Materials, TU Ilmenau) for the support during the ball milling. The authors also would like to acknowledge Mr. Alexander Kästner (Sympatec GmbH) for the particle size distribution measurements.
Sources of information:
Directorio de Producción Científica
Scopus