| abstract |
Sintered refractory product having a matrix-bound aggregate and having, in percentages by weight on the basis of the oxides, - more than 40% Cr2O3 chromium oxide, - less than 50% Al2O3 aluminum oxide, - 1 % or more zirconium oxide ZrO2 of which at least 20% by mass is stabilized in the cubic and / or quadratic form, - 0,1% or more of yttrium oxide Y2O3, acting as stabilizer of the oxide of zirconium ZrO2, - less than 1.9% hafnium oxide HfO2, the total content of chromium, aluminum and zirconium oxides Cr2O3 + Al2O3 + ZrO2 being greater than 70%. |