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1. (WO2018124024) CORROSION-RESISTANT MEMBER

Pub. No.:    WO/2018/124024    International Application No.:    PCT/JP2017/046550
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 27 00:59:59 CET 2017
IPC: C04B 35/111
Applicants: KYOCERA CORPORATION
京セラ株式会社
Inventors: IIDA,Shuichi
飯田 修一
OOTA,Mizuho
大田 瑞穂
TOYODA,Satoshi
豊田 諭史
TAKENOSHITA,Hidehiro
竹之下 英博
Title: CORROSION-RESISTANT MEMBER
Abstract:
The corrosion-resistant member according to the present disclosure comprises an alumina ceramic containing α-alumina (α-Al2O3) and anorthite (CaAl2Si2O8). The alumina ceramic contains a total of 0.4 mass% or more of Ca and Si in terms of CaO and SiO2, respectively, and the mass ratio of CaO/SiO2 is within the range of 0.5-2. In addition, the ratio B/A of a peak strength B of X-ray diffraction on the (004)-plane of the anorthite to a peak strength A of X-ray diffraction on the (104)-plane of the α-alumina, is 0.01 or more at the surface of the alumina ceramic.