The Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy ingot and sheet were prepared by casting and hot extrusion techniques, and the microstructure, age hardening behavior and me
Boehmites (Al2O3·xH2O) were hydrothermally prepared from aluminum alkoxide. The effect of temperature on preparation was studied in the range of 100-180 ℃. Th