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ALUMINA SINTERED BODY, ABRASIVE GRAIN, AND GRINDSTONE
To provide an alumina sintered body having high hardness and excellent abrasion resistance, an abrasive grain, and a grindstone.SOLUTION: An alumina sintered body comprises: an inner layer that contains an alumina crystal grain having an average aspect ratio of 1.0-2.0; and an outer layer that covers at least a part of the inner layer from outside, and contains an alumina crystal grain having an average aspect ratio of greater than 2.0. The alumina sintered body contains no silicon other than inevitable impurities.SELECTED DRAWING: Figure 3
【課題】高硬度を有し、かつ耐摩耗性に優れたアルミナ焼結体、砥粒、及び砥石を提供すること。【解決手段】含まれるアルミナ結晶粒の平均アスペクト比が１．０〜２．０である内層と、該内層の少なくとも一部を外側から覆い、含まれるアルミナ結晶粒の平均アスペクト比が２．０より大きい外層と、を有し、不可避不純物以外のケイ素を含まない。【選択図】図３
ALUMINA SINTERED BODY, ABRASIVE GRAIN, AND GRINDSTONE
To provide an alumina sintered body having high hardness and excellent abrasion resistance, an abrasive grain, and a grindstone.SOLUTION: An alumina sintered body comprises: an inner layer that contains an alumina crystal grain having an average aspect ratio of 1.0-2.0; and an outer layer that covers at least a part of the inner layer from outside, and contains an alumina crystal grain having an average aspect ratio of greater than 2.0. The alumina sintered body contains no silicon other than inevitable impurities.SELECTED DRAWING: Figure 3
【課題】高硬度を有し、かつ耐摩耗性に優れたアルミナ焼結体、砥粒、及び砥石を提供すること。【解決手段】含まれるアルミナ結晶粒の平均アスペクト比が１．０〜２．０である内層と、該内層の少なくとも一部を外側から覆い、含まれるアルミナ結晶粒の平均アスペクト比が２．０より大きい外層と、を有し、不可避不純物以外のケイ素を含まない。【選択図】図３
ALUMINA SINTERED BODY, ABRASIVE GRAIN, AND GRINDSTONE
アルミナ焼結体、砥粒、及び砥石
MIYAISHI SO (author)
2019-07-11
Patent
Electronic Resource
Japanese
Alumina sintered body, abrasive grain, and grinding wheel
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Alumina sintered body, abrasive grain, and grinding wheel
| European Patent Office | 2021
ALUMINA SINTERED BODY, ABRASIVE GRAIN, AND GRINDING WHEEL
| European Patent Office | 2020
ALUMINA SINTERED BODY, ABRASIVE GRAIN, AND GRINDING WHEEL
| European Patent Office | 2019