Patent ID: 8376318
Filing Date: 2013-02-19
Classification: B22D,C04B,Y10T

Abstract:
1. A powder including, in percentages by weight, based on oxides of: (a) more than 92% of zirconia particles, said powder comprising: (b) 1% to 2% of silica particles having a size smaller than 50 microns, called fine silica particles; (c) 0.3% to 5% of particles consisting of one, two or three oxides selected from the group consisting of CaO, MgO and Y (d) less than 1% of particles consisting of other oxides; more than 5% of zirconia aggregate particles which size is larger than 1 mm; and from 8% to 20% of matrix particles of zirconia having a size smaller than 15 μm and comprising, to more than 95% of their mass, a monoclinic phase, called matrix particles of monoclinic zirconia.