Alumina sintered body, abrasive grains, and grindstone
AssigneeShowa Denko K.K.
InventorsShinichiro Tomikawa, Hirokazu Miyazawa, Takeshi Iemura
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Abstract
Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein the total amount of the TiO2-equivalent content of the titanium compound, the Fe2O3-equivalent content of the iron compound and the alumina content is at least 98% by mass, the total amount of the TiO2-equivalent content of the titanium compound and the Fe2O3-equivalent content of the iron compound is from 5 to 13% by mass, and the ratio by mass of the TiO2-equivalent content of the titanium compound to the Fe2O3-equivalent content of the iron compound (TiO2/Fe2O3) is from 0.85/1.15 to 1.15/0.85; and an abrasive grain and a grain stone using the alumina sintered compact.
Claims4
An alumina sintered compact containing a titanium compound and an iron compound, wherein:
- a total amount of a TiO2-equivalent content of the titanium compound, a Fe2O3-equivalent content of the iron compound and the alumina content is at least 98% by mass,
- a total amount of the TiO2-equivalent content of the titanium compound and the Fe2O3-equivalent content of the iron compound is from 5 to 13% by mass, and
- a ratio by mass of the TiO2-equivalent content of the titanium compound to the Fe2O3-equivalent content of the iron compound (TiO2/Fe2O3) is from 0.85/1.15 to 1.15/0.85,
- wherein the alumina sintered compact comprises main crystal phases, each of the main crystal phases is composed of a corundum crystal and a FeTiAlO5 grain exists in a grain boundary of each of the main crystal phases.
Dependencies are inferred from the claim text.