REFRACTORY POWDER COMPRISING COATED MULLITE GRAINS
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United States of America Patent
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Issued Date -
Apr 11, 2013
app pub date -
Apr 27, 2011
filing date -
Apr 28, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A powder is disclosed having a coarse fraction representing more than 60% and less than 85% of the powder, as a weight percentage on the basis of the oxides, and that is constituted of particles having a size greater than or equal to 50 μm, referred to as “coarse particles”, the powder comprising at least 5% of coated grains having a size greater than or equal to 50 μm, as a weight percentage on the basis of the oxides of the powder, and a fine fraction, forming the balance to 100% as a weight percentage on the basis of the oxides, constituted of particles having a size of less than 50 μm, referred to as “matrix particles”. The powder can be applied in combustion chambers in which the temperature may reach 1400° C.
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