Corrosion behavior of plasma coatings CuAl10 and CuAl50 on magnesium alloy AZ 91
1.
SYSNO ASEP
0464733
Document Type
C - Proceedings Paper (int. conf.)
R&D Document Type
Conference Paper
Title
Corrosion behavior of plasma coatings CuAl10 and CuAl50 on magnesium alloy AZ 91
Author(s)
Kubatík, Tomáš František (UFP-V) Stoulil, J. (CZ) Stehlíková, K. (CZ) Slepička, P. (CZ) Janata, Marek (UFP-V)
Source Title
Proceedings of the 4th International Conference on Chemical Technology. - Prague : Czech Society of Industrial Chemistry, 2016 / Veselý M. ; Hrdlička Z. ; Hanika J. ; Lubojacký J.
- ISSN 2336-811X
- ISBN 978-80-86238-94-4
Pages
s. 259-264
Number of pages
6 s.
Publication form
Print - P
Action
International Conference on Chemical Technology, ICCT2016 /4./
Event date
25.04.2016 - 27.04.2016
VEvent location
Mikulov
Country
CZ - Czech Republic
Event type
EUR
Language
eng - English
Country
CZ - Czech Republic
Keywords
magnesium alloy AZ 91 ; plasma spraying ; corrosion resistance
Subject RIV
JG - Metallurgy
R&D Projects
GP14-31538P GA ČR - Czech Science Foundation (CSF)
Institutional support
UFP-V - RVO:61389021
Annotation
The most common magnesium alloy AZ 91 is widely used as a structural material, but its use is limited at higher temperatures and high humidity. Plasma spraying is a technology that allows to prepare protective metallic and non-metallic coatings on a wide variety of substrates including magnesium and its alloys. In this study, CuAl10 and CuAl50 were plasma sprayed on magnesium alloy AZ 91 with the aim to study corrosion resistance of the plasma sprayed coatings. The corrosion resistance of layers was evaluated by the method of electrochemical potentiodynamic measurement as well as long-term corrosion tests in a condensation chamber with 0.5 mol NaCl at the temperature of 35 °C for 1344 hours. Layers with 1, 2, 5 passes and passes of CuAl10 with the thickness ranging from 75 to 716 mm and CuAl50 with the thickness ranging from 64 to 566 mm were prepared. The increased corrosion velocity was observed in the case of thin layers of 2 and 5 passes due to the development of a galvanic corrosion couple. The CuAl10 layer prepared with ten passes has an outstanding corrosion resistance.
