US 12,437,953 B2
Cathode member for electron beam generation, and method for manufacturing the same
Kenji Koga, Kobe (JP); Toshiaki Takagi, Kobe (JP); Fumiaki Kudo, Kobe (JP); and Tatsuhiko Kusamichi, Kobe (JP)
Assigned to KOBELCO RESEARCH INSTITUTE, INC., Hyogo (JP)
Appl. No. 17/639,277
Filed by KOBELCO RESEARCH INSTITUTE, INC., Hyogo (JP)
PCT Filed Aug. 28, 2020, PCT No. PCT/JP2020/032507
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/044951, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019-159587 (JP), filed on Sep. 2, 2019.
Prior Publication US 2022/0336179 A1, Oct. 20, 2022
Int. Cl. B22F 3/10 (2006.01); B22F 9/04 (2006.01); C22C 5/04 (2006.01); C30B 29/52 (2006.01); H01J 1/146 (2006.01); H01J 1/304 (2006.01); H01J 1/34 (2006.01); H01J 9/02 (2006.01); H01J 9/04 (2006.01); H01J 9/12 (2006.01)
CPC H01J 1/146 (2013.01) [B22F 3/10 (2013.01); B22F 9/04 (2013.01); C22C 5/04 (2013.01); C30B 29/52 (2013.01); H01J 1/304 (2013.01); H01J 1/34 (2013.01); H01J 9/025 (2013.01); H01J 9/042 (2013.01); H01J 9/12 (2013.01); B22F 2301/25 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A cathode member for electron beam generation, comprising:
95% by area or more of a single phase of a compound composed of iridium and cerium,
wherein a total content of one or more subcomponents of metallic iridium and an oxide of one or more elements of iridium and cerium is 5% by area or less of the cathode member,
wherein a crystal microstructure of the single phase is solidified in one direction or made of a single crystal, and
wherein the cathode member does not contain voids.