Corrosion and oxidation of alloys of the Mg-Y-Zr-REM system

The corrosion resistance of an alloy of the Mg - Y - Zr - REM system obtained by sand casting and subjected to different modes of heat treatment is studied with the use of potentiodynamic polarization, immersion tests, scanning electron microscope, and Auger electron spectroscope. The microstructure of the alloy is described.