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US 12,320,009 B2Granted
Thermal spraying of ceramic materials
OwnerNuria Espallargas, Fahmi Mubarokinventors
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Abstract
A process for thermally spraying metal oxide coated ceramic particles onto a substrate comprising: (i) obtaining a plurality of metal oxide coated particles of silicon carbide, silicon nitride, boron carbide or boron nitride; and (ii) thermally spraying the particles of step (I) onto a substrate.
Claims20
A process for thermally spraying metal oxide coated ceramic particles onto a substrate comprising:
- (I) obtaining a plurality of particles selected from the group consisting only of silicon carbide, silicon nitride, boron carbide or boron nitride, wherein said particles having a continuous coating consisting only of yttrium aluminum garnet;
- and
- (ii) thermally spraying the particles of step (I) onto a substrate, wherein the yttrium aluminum garnet coating forms at least 20 wt % of the coated particle weight before the thermal spraying process.
A process for thermally spraying metal oxide coated ceramic particles onto a substrate comprising:
- (I) obtaining a plurality of particles selected from the group consisting only of silicon carbide, silicon nitride, boron carbide or boron nitride wherein said particles have a coating consisting only of an aluminum salt and an yttrium salt;
- (II) calcining and sintering the particles of step (I) so as to form a plurality particles of silicon carbide, silicon nitride, boron carbide or boron nitride, wherein said particles having a continuous coating consisting only of yttrium aluminum garnet;
- and
- (III) thermally spraying the particles of step (II) onto a substrate, wherein the yttrium aluminum garnet coating forms at least 20 wt % of the coated particle weight before the thermal spraying process.
1 more element
A process for thermally spraying metal oxide coated ceramic particles onto a substrate comprising:
- (I) obtaining a plurality of particles selected from the group consisting only of silicon carbide, silicon nitride, boron carbide or boron nitride;
- (II) combining the particles of step (I) with a salt consisting only of an aluminum salt and an yttrium salt in the presence of a weak acid or weak base so as to form a metal salt coating on said particles;
- (III) drying the particles of step (II);
- (IV) calcining and sintering the particles of step (III) so as to form a plurality of particles of silicon carbide, silicon nitride, boron carbide or boron nitride, wherein said particles having a continuous coating consisting only of yttrium aluminum garnet;
- and
- (V) thermally spraying the particles of step (IV) onto a substrate, wherein the yttrium aluminum garnet coating forms at least 20 wt % of the coated particle weight before the thermal spraying process.
3 more elements
Dependencies are inferred from the claim text.