تحضير سيراميك ثنائي Al2O3-Y2O3 و توصيف بنيته البلورية و خواصه

الملخص EN

In this work, ceramic samples were prepared with eutectic composition Al2O3-18mol%Y2O3 by the powder technology method of the aluminum and yttrium oxides using heat treatments at 727 and 1350°C.

Phase analysis of the received powder (Al2O3, Y2O3) and treated samples were achieved using XRD.

The phase analysis revealed the growing of new crystalline phase: YAM (Y4Al2O9).

The hardness of the treated samples at 727 and 1350°C had increased by 90%, 150% respectively, in comparison with the aluminum oxide.

The AFM microscopic study showed more compaction after the heat treatment of the samples.