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US 7,943,541 B2Granted
Sintered refractory product exhibiting enhanced thermal shock resistance
AssigneeSaint-Gobain Centre De Recherches Et D'Etudes Europeen
InventorsRichard Avedikian, Michel Bobo, Thibault Champion, Christian His
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Abstract
The invention concerns a sintered refractory product having the following average chemical composition, in weight percentages based on oxides: 20%<Al2O3<90%; 6%=SiO2<30%; 3%<ZrO2<50%; 0%=Cr2O3<50%. The inventive product is characterized in that it comprises 17 to 85 wt. % of mullite-zirconium grains.
Claims23
A refractory sintered product, in a form of a block, having a following average chemical composition, with percentages by weight being on a basis of oxides:
- 20% <Al2O3 <90%
- 2% <SiO2 <30%
- 3% <ZrO2 <50%
- 0% <Cr2O3 <0.5%
- the product containing 17 to 85% of mullite-zirconia grains, at least 1% of the mullite-zironia grains having a size of 0.3 mm or less.
2 more elements
Dependencies are inferred from the claim text.