US 11,851,344 B2
Complex oxide ceramic, method for producing same, and article
Akira Nakajima, Tokyo (JP); Takumi Matsumoto, Tokyo (JP); Sachiko Matsushita, Tokyo (JP); Toshihiro Isobe, Tokyo (JP); and Kayano Sunada, Ebina (JP)
Assigned to TOKYO INSTITUTE OF TECHNOLOGY, Tokyo (JP); KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, Ebina (JP); and NGK SPARK PLUG CO., LTD., Nagoya (JP)
Appl. No. 17/260,850
Filed by TOKYO INSTITUTE OF TECHNOLOGY, Tokyo (JP); KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, Ebina (JP); and NGK SPARK PLUG CO., LTD., Nagoya (JP)
PCT Filed Jul. 16, 2019, PCT No. PCT/JP2019/027882
§ 371(c)(1), (2) Date Jan. 15, 2021,
PCT Pub. No. WO2020/017493, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 2018-134810 (JP), filed on Jul. 18, 2018.
Prior Publication US 2021/0261432 A1, Aug. 26, 2021
Int. Cl. C04B 35/495 (2006.01); C01G 41/00 (2006.01); A01N 59/16 (2006.01); A01N 25/12 (2006.01); C01G 39/00 (2006.01)
CPC C01G 41/006 (2013.01) [A01N 25/12 (2013.01); A01N 59/16 (2013.01); C01G 39/006 (2013.01); C04B 35/495 (2013.01); C01P 2002/50 (2013.01); C04B 2235/3227 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A complex oxide ceramic comprising a rare earth element and at least one element selected from among molybdenum, tungsten, and vanadium, wherein a surface of the complex oxide ceramic has a water contact angle of 88° to 119°, and wherein, at the surface of the complex oxide ceramic, a ratio of carbon to the sum of the rare earth element and the at least one element selected from among molybdenum, tungsten, and vanadium is 1.7 atm % to 2.1 atm %.