Al-O, Corundum, Quaternary, Phase transitions

• Al-O-Y-Zr
• Al-La-O-Zr
• Al-Nd-O-Zr
• Al-O-Sm-Zr
• Al-O-Yb-Zr
• phase diagram
• oxide
• quaternary
• corundum
• chalcogen
• transitional