Abstract
Al 2O 3–ZrO 2 powders with 15, 50 and 85 wt.% Al 2O 3 were prepared by mixing high purity α-alumina powder with Zr(OH) 4 gel synthesized by the precipitation method. The obtained mixture was calcined for 2 h at temperatures ranging from 400 to 1300 °C. The effect of the addition of Al 2O 3 on ZrO 2 phase composition in the Al 2O 3–ZrO 2 system was characterized by means of differential thermal analysis, X-ray diffraction and transmission electron microscopy.
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