Ceramics material and producing the same
AssigneeToshiba Ceramics Co., Ltd.
InventorsKeiji Morita, Mitsuhiro Fujita, Haruo Murayama
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Abstract
The invention is a method of producing a ceramics material comprising the steps of: preparing a raw powder in which alumina particles having an average particle diameter of 0.1-1.0 μare doped with at least magnesia of 0.01-1 weight % and a solution containing yttrium of 0.1-15 weight % in yttria; molding said raw powder and calcining a molding thus created; and heating the calcined molding in an atmosphere containing a hydrogen gas to create YAG which is leached to the surface to deposit YAG on the surface and sintering the molding.
Claims21
A ceramics material comprising a base material substantially made of a sintered body of alumina and a yttrium-aluminum-garnet(YAG) layer having a thickness of 2 μm or more which is formed on a surface of the base material.
Dependencies are inferred from the claim text.