Material for sintering appliance
AssigneeToshiba Ceramics Co., Ltd.
InventorsShigeki Niwa, Tadashi Kimura, Hiroshi Okada, Toshiyuki Suzuki
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Abstract
The present invention has been achieved by a material for a sintering appliance which comprises a base material comprising alumina×silica containing from 65 to 95% by weight of Al2O3 having formed on the surface thereof a flame-coated film comprising ZrO2 and CaO as main components, wherein the content of CaO is from 23 to 30% by weight based on the weight of the ZrO2 and CaO, the mineral composition of the main components of the coated film is calcium zirconate. Preferably the difference of thermal expansion between the base material and the flame-coated film is 0.3% or more at 1,200° C.
Claims6
A material for a sintering appliance which comprises:
- a base material comprising alumina-silica containing from 65 to 95% by weight of Al2O3;
- a flame-coated film formed on the surface of the base material, comprising ZrO2 and CaO as main components, wherein the content of CaO is from 23 to 30% by weight based on the weight of the ZrO2 and CaO, the mineral composition of the main components of the coated film is calcium zirconate, and wherein the difference of thermal expansion between the base material and the flame-coated film is 0.3% or more at 1,200° C.;
- and
- a second flame-coated film made of alumina-silica containing from 65 to 99% by weight of Al2O3, which is interposed between the base material and the flame-coated film.
Dependencies are inferred from the claim text.