C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/48 (2006.01) C04B 35/653 (2006.01) C09K 3/14 (2006.01)
Patent
CA 2665623
The invention relates to a molten ceramic particle, characterised in that it has the following chemical composition in wt % based on oxides and for a total of 100 %: 55 % < ZrO 2+HfO 2< 70 %; 20% < SiO2 < 30 %; 6.5 % < MgO < 9.5 %; A12O3 in an amount such that the mass ratio MgO / A12O3 is comprised between 2.4 and 6.6; and less than 0.6 % of other oxides.
La présente invention concerne une particule céramique fondue, caractérisée en ce qu'elle présente la composition chimique suivant en pourcentages en masse sur la base des oxydes et pour un total de 100%: 55 % < ZrO 2+HfO 2< 70 %; 20% < SiO 2< 30 %; 6,5 % < MgO< 9,5 %; A1 2O 3en une quantité telle que le rapport en masse MgO / A1 2O 3 est compris entre 2,4 à 6,6; et moins de 0,6 % d' autres oxydes.
Boussant-Roux Yves
Nonnet Emmanuel
Robic
Saint-Gobain Centre de Recherches Et D'etudes Europeen
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