The modified mullite coating comprises mullite and a modifier component that reduces cracks in the modified mullite coating.
The modified mullite coating comprises mullite and a modifier component that reduces cracks in the modified mullite coating.
A mullite composition is comprised substantially of mullite grains that are essentially chemically bound wherein the composition h as at least two adjoining regions that have substantially different microstructures.
A containment element for a pressure containment assembly, comprising mullite or a polymorph of mullite.
A method of forming a porous mullite composition of acicular mullite grains having improved properties is described, where the mullite is formed at some time in the presence of a fluroine containing gas.
Acicular mullite bodies are made in two-step firing process in which a green body is converted first to a fluorotopaz and then to acicular mullite.
Porous composites of acicular mullite and tialite are formed by firing an acicular mullite body in the presence of an oxide of titanium.
The article can further comprise a thermal barrier coating applied to the modified mullite coating.
The support is preferably composed of a non-stoichiometric acicular mullite.
The firebrick made of sintered or fused mullite as the main raw material may be entirely made of mullite, partly may be mullite, and some may be made of corundum.
Porous composites of mullite and cordierite are formed by firing an acicular mullite body in the presence of a magnesium source and a silicon source.
The percolated mullite produced extends continuously and/or substantially throughout the entire body of material.
The mullite gasket contains at least 95 wt.-% of silica and alumina.
The M in the MCrA1Y material is Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer is mullite or Al2O3.
The invention relates to a spinning mass for producing aluminum oxide and mullite fibers.
The invention also includes the use of a protective mullite top coat on the thermal coating.
In other variations, the oxide of titanium is applied to a previously-formed acicular mullite body.
A porous mullite composition is made by forming a mixture of one or more precursor compounds having the elements present in mullite (e.g., clay, alumina, silica) and a property enhancing compound.
In some variations of the process, the oxide of titanium is present when the acicular mullite body is formed.
A method of forming a porous mullite composition of acicular mullite grains having improved properties is described, where the mullite is formed at some time in the presence of a fluroine containing gas.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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