Producing method for zirconia hollow particles
AssigneeYazaki Corporation
InventorsTakayuki Kato, Makoto Egashira, Yasuhiro Shimizu, Takeo Hyodo, Miyuki Fukunaga
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Abstract
A producing method for producing zirconia hollow particles in which a zirconia powder mutually combines to form a porous shell layer thereby constructing a hollow structure, the method being characterized in mixing under a pressurized contact a resin powder and a zirconia powder of a grain size smaller than that of the resin powder, thereby forming a precursor by covering a surface of the resin powder with the zirconia powder in a partially embedded state, and calcining the precursor to expel the resin powder and to mutually sinter the zirconia powder.
Claims6
A method for producing zirconia hollow particles comprising the steps of:
- mixing a resin powder and a zirconia powder of a grain size smaller than a grain size of the resin powder under a pressurized contact;
- forming a precursor by covering a surface of the resin powder with the zirconia powder in a partially embedded state;
- and
- calcining the precursor to disappear the resin powder;
- and
- mutually sintering the zirconia powder.
Dependencies are inferred from the claim text.