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1. (WO2018056456) MAGNESIUM OXIDE-CONTAINING SPINEL POWDER AND METHOD FOR PRODUCING SAME

Pub. No.:    WO/2018/056456    International Application No.:    PCT/JP2017/034637
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Wed Sep 27 01:59:59 CEST 2017
IPC: C01F 7/16
C01F 5/08
C04B 35/443
C04B 35/626
Applicants: TATEHO CHEMICAL INDUSTRIES CO., LTD.
タテホ化学工業株式会社
Inventors: CHIKAZAWA, Tomoaki
近澤 智文
SAITO, Akinori
齋藤 彰範
OHSAKI, Yoshihisa
大崎 善久
Title: MAGNESIUM OXIDE-CONTAINING SPINEL POWDER AND METHOD FOR PRODUCING SAME
Abstract:
Provided is a magnesium oxide-containing spinel powder which is capable of producing a ceramic sintered body that has high strength and excellent strength stability. A magnesium oxide-containing spinel powder which has a 50% particle diameter (D50) of 0.30 to 10.00 μm, and wherein: the ratio of the difference between the 90% particle diameter (D90) and D50 to the difference between D50 and the 10% particle diameter (D10), namely (D90 - D50)/(D50 - D10) is 1.0 to 5.0; and the composition ratios of Mg and Al in terms of oxides, namely the composition ratio of MgO is 50% to 90% by weight and the composition ratio of Al2O3 is 50% to 10% by weight.