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Title:
ALUMINA SINTERED BODY, ABRASIVE GRAINS, GRINDSTONE, POLISHING CLOTH, AND METHOD FOR MANUFACTURING ALUMINA SINTERED BODY
Document Type and Number:
WIPO Patent Application WO/2014/123153
Kind Code:
A1
Abstract:
Provided are an alumina sintered body having excellent friability and requiring little grinding power, abrasive grains comprising the alumina sintered body, a grindstone obtained using the abrasive grains, a polishing cloth, and a method for manufacturing the alumina sintered body. An alumina sintered body obtained by sintering a mixture in which alumina and aluminum hydroxide are blended, the alumina sintered body having a porosity of 6 to 35 vol% and a Vickers hardness of at least 4 GPa; abrasive grains comprising the alumina sintered body; a grindstone obtained using the abrasive grains; a polishing cloth; and a method for manufacturing the alumina sintered body.

Inventors:
MIYAZAWA, Hirokazu (SHOWA DENKO K.K. 1, Oaza Soga, Shiojiri-sh, Nagano 61, 〒3996461, JP)
HIRASAWA, Shinnya (SHOWA DENKO K.K. 1, Oaza Soga, Shiojiri-sh, Nagano 61, 〒3996461, JP)
ASAKURA, Ryouta (SHOWA DENKO K.K. 1, Oaza Soga, Shiojiri-sh, Nagano 61, 〒3996461, JP)
Application Number:
JP2014/052666
Publication Date:
August 14, 2014
Filing Date:
February 05, 2014
Export Citation:
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Assignee:
SHOWA DENKO K.K. (13-9, Shiba Daimon 1-chome Minato-k, Tokyo 18, 〒1058518, JP)
International Classes:
C04B38/00; B24D3/00; C04B35/10; C09K3/14
Foreign References:
JPH05194026A1993-08-03
JP2002068854A2002-03-08
JP2001219099A2001-08-14
JPH11322433A1999-11-24
JPH09310765A1997-12-02
JPH06136353A1994-05-17
US5893935A1999-04-13
JPH0138629B21989-08-15
JPS61250084A1986-11-07
Other References:
HUANG, ZHIJIAN ET AL.: "Micro-ha Kanetsu ni yoru Ceramics Shoketsu no Kenkyu", THE JAPAN INSTITUTE OF METALS HOKURIKU SHIN'ETSU SHIBU THE IRON AND STEEL INSTITUTE OF JAPAN HOKURIKU SHIN'ETSU SHIBU HEISEI 19 NENDO RENGO KOENKAI GAIYOSHU, 1 December 2007 (2007-12-01), pages 98
Attorney, Agent or Firm:
OHTANI, Tamotsu (OHTANI PATENT OFFICE, Bridgestone Toranomon Bldg. 6F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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