| abstract |
It provides a tetragonal zirconia composite powder to prevent low temperature degradation and have high strength and toughness. 94.38-96.992 mol% ZrO 2 with 2.5-3.5 mol% Y 2 O 3 , 0.008-0.12 mol% Fe 2 O 3 , 0.5-2.0 mol% CeO 2 , or 88-90.92 mol% ZrO 2 to 5-6 mol% of Y 2 O 3 , Nb 2 O 5 or Ta 2 O 5 to 4-5 mol%, 0.008-0.25 mol% of Fe 2 O 3 , 0.072 to 0.75 mol% of CeO 2 The added composition can be used as a tetragonal zirconia composite powder. The molded body for implantation can be obtained by mixing the composite powder with 63-92 mol% of Al 2 O 3 8-27 mol%. The composite powder and composite according to the present invention can be used as a dental material, and can produce an artificial tooth expressing a color similar to the tooth color. |