abstract |
Sintered refractory product comprising, in percentages by weight on the basis of the oxides, - more than 10% of chromium oxide Cr2O3, - more than 2% of hafnium oxide HfO2, - more than 1% of zirconium oxide ZrO2, the total content of chromium, hafnium and zirconium oxides Cr2O3 + HfO2 + ZrO2 being greater than 70%. |