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COMPOSITE SINTERED BODY, ABRASIVE GRAIN, GRINDING STONE, AND METHOD FOR MANUFACTURING COMPOSITE SINTERED BODY
To provide a composite sintered body having high hardness and excellent abrasion resistance, and to provide an abrasive grain, a grinding stone, and a method for manufacturing the composite sintered body.SOLUTION: The composite sintered body of the present invention includes an alumina sintered body having a concave on a surface thereof, and an yttrium compound present in the concave. The abrasive grains of the present invention include the composite sintered body. The grinding stone of the present invention has a layer of the abrasive grains on a working surface. The method for manufacturing the composite sintered body includes attaching an yttrium compound precursor to a surface of an alumina raw material or an alumina sintered body, and a heat treatment of the alumina raw material or the alumina sintered body to which the yttrium compound precursor is attached.SELECTED DRAWING: Figure 5
【課題】高硬度を有し、かつ耐摩耗性に優れた複合焼結体、砥粒、砥石、及び複合焼結体の製造方法を提供する。【解決手段】本発明の複合焼結体は表面に凹部が存在するアルミナ焼結体と、その凹部に存在するイットリウム化合物とを含む。本発明の砥粒は本発明の複合焼結体を含む。本発明の砥石は本発明の砥粒の層を作用面に有する。本発明の複合焼結体の製造方法は、アルミナ原料またはアルミナ焼結体の表面にイットリウム化合物前駆体を付着させる付着工程と、イットリウム化合物前駆体が付着したアルミナ原料またはアルミナ焼結体を熱処理する熱処理工程とを含む。【選択図】図５
COMPOSITE SINTERED BODY, ABRASIVE GRAIN, GRINDING STONE, AND METHOD FOR MANUFACTURING COMPOSITE SINTERED BODY
To provide a composite sintered body having high hardness and excellent abrasion resistance, and to provide an abrasive grain, a grinding stone, and a method for manufacturing the composite sintered body.SOLUTION: The composite sintered body of the present invention includes an alumina sintered body having a concave on a surface thereof, and an yttrium compound present in the concave. The abrasive grains of the present invention include the composite sintered body. The grinding stone of the present invention has a layer of the abrasive grains on a working surface. The method for manufacturing the composite sintered body includes attaching an yttrium compound precursor to a surface of an alumina raw material or an alumina sintered body, and a heat treatment of the alumina raw material or the alumina sintered body to which the yttrium compound precursor is attached.SELECTED DRAWING: Figure 5
【課題】高硬度を有し、かつ耐摩耗性に優れた複合焼結体、砥粒、砥石、及び複合焼結体の製造方法を提供する。【解決手段】本発明の複合焼結体は表面に凹部が存在するアルミナ焼結体と、その凹部に存在するイットリウム化合物とを含む。本発明の砥粒は本発明の複合焼結体を含む。本発明の砥石は本発明の砥粒の層を作用面に有する。本発明の複合焼結体の製造方法は、アルミナ原料またはアルミナ焼結体の表面にイットリウム化合物前駆体を付着させる付着工程と、イットリウム化合物前駆体が付着したアルミナ原料またはアルミナ焼結体を熱処理する熱処理工程とを含む。【選択図】図５
COMPOSITE SINTERED BODY, ABRASIVE GRAIN, GRINDING STONE, AND METHOD FOR MANUFACTURING COMPOSITE SINTERED BODY
複合焼結体、砥粒、砥石、複合焼結体の製造方法
MIYAISHI SO (author)
2019-04-04
Patent
Electronic Resource
Japanese
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