US 12,456,578 B2
Metal electrode of ceramic capacitor and method of forming the same
Hsing-I Hsiang, Tainan (TW); Fu-Su Yen, Tainan (TW); Chi-Yuen Huang, Tainan (TW); Chun-Te Lee, Kaohsiung (TW); Kai-Hsun Yang, Kaohsiung (TW); and Shih-Ming Wang, Kaohsiung (TW)
Assigned to YAGEO CORPORATION, Kaohsiung (TW); and NATIONAL CHENG KUNG UNIVERSITY, Tainan (TW)
Filed by YAGEO CORPORATION, Kaohsiung (TW); and NATIONAL CHENG KUNG UNIVERSITY, Tainan (TW)
Filed on Feb. 24, 2023, as Appl. No. 18/173,799.
Claims priority of application No. 202211448549.8 (CN), filed on Nov. 18, 2022.
Prior Publication US 2024/0170211 A1, May 23, 2024
Int. Cl. B22F 3/10 (2006.01); B22F 1/107 (2022.01); B22F 1/16 (2022.01); B22F 3/23 (2006.01); B22F 7/04 (2006.01); C22C 1/04 (2023.01); C22C 1/05 (2023.01); H01G 4/008 (2006.01)
CPC H01G 4/008 (2013.01) [B22F 1/107 (2022.01); B22F 1/16 (2022.01); B22F 3/1021 (2013.01); B22F 3/23 (2013.01); B22F 7/04 (2013.01); C22C 1/0433 (2013.01); C22C 1/05 (2013.01); B22F 2007/047 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of forming a metal electrode of a ceramic capacitor, comprising:
mixing metal powders, a metal oxide organic-precursor and a barium titanate organic-precursor to obtain precursor powders, wherein based on an amount of the metal powders as 100 wt %, an amount of the barium titanate organic-precursor is 3 wt % to 15 wt %, and based on an amount of the barium titanate organic-precursor as 100 mol %, an amount of the metal oxide organic-precursor is 0.5 mol % to 5 mol %;
adding an adhesive to the precursor powders to obtain a metal slurry;
performing a molding process to the metal slurry to obtain a film material;
performing a binder burn-out process to the film material to obtain a degumming film, wherein the binder burn-out process makes the barium titanate organic-precursor transform to barium titanate; and
performing a sintering process to the degumming film to obtain the metal electrode.