US 11,746,439 B2
Pressure container for crystal production
Kouhei Kurimoto, Muroran (JP); Quanxi Bao, Muroran (JP); Mutsuo Ueda, Muroran (JP); Yuji Sasagawa, Muroran (JP); Masaya Morimoto, Muroran (JP); Toru Ishiguro, Sendai (JP); and Shigefusa Chichibu, Sendai (JP)
Assigned to JAPAN STEEL WORKS M&E, INC., Muroran (JP); and TOHOKU UNIVERSITY, Sendai (JP)
Appl. No. 16/499,435
Filed by THE JAPAN STEELWORKS, LTD., Tokyo (JP); and TOHOKU UNIVERSITY, Sendai (JP)
PCT Filed Apr. 5, 2018, PCT No. PCT/JP2018/014627
§ 371(c)(1), (2) Date Sep. 30, 2019,
PCT Pub. No. WO2018/186475, PCT Pub. Date Oct. 11, 2018.
Claims priority of application No. 2017-076804 (JP), filed on Apr. 7, 2017.
Prior Publication US 2020/0048791 A1, Feb. 13, 2020
Int. Cl. C30B 35/00 (2006.01); C30B 7/10 (2006.01); C30B 29/38 (2006.01)
CPC C30B 35/002 (2013.01) [C30B 7/10 (2013.01); C30B 29/38 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A pressure container for crystal production containing:
a pressure container main body having an opening; and
a cover configured to close the opening of the pressure container main body,
wherein the pressure container is configured to produce a crystal using ammonia in a supercritical state or a subcritical state as a solvent, a raw material, a mineralizer, and a seed crystal inside the container, and
wherein Ag is present at least on an entire surface of an inner surface of the pressure container configured to be in contact with the solvent, the entire surface where the Ag is present including at least:
an inner surface of the pressure container main body comprising a Ag liner;
an inner surface of a portion comprising a Ag plating layer, the portion being located at an upper end edge of the pressure container main body and being not covered with the Ag liner; and
an inner surface of the cover.