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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v7.i2.140
6 pages

SYNTHESIS OF OXIDE-CERAMIC COATINGS ON MAGNESIUM ALLOYS AND THEIR CORROSION PROPERTIES

H. M. Nykyforchyn
Karpenko Physico-Mechanical Institute of NAS, 5 Naukova St., 79601 Lviv, Ukraine
W. Dieted
GKSS-Forschungszentrum Geesthacht GmbH, Max-Planck-Str, D-21502 Geesthacht, Germany
M. D. Klapkiv
Karpenko Physico-Mechanical Institute of NAS, 5 Naukova St., 79601 Lviv, Ukraine

ABSTRAKT

If a voltage of several hundred volts is applied to a metal-electrolyte system, electric discharges occur which result in a plasma developing in the discharge channels and in an oxide deposition on the metal surface. In the present study the number density and temperature of the plasma electrons and the optimum current conditions and electrolyte composition for obtaining oxide-ceramic coatings on magnesium having a thickness of 20 - 140 mm and a microhardness of 10 GPa were determined. The corrosion resistance of three magnesium alloys was investigated in 0.3% HCl (pH 3.1) and 0.3% NaCl solutions (pH 6.3) using polarisation experiments.