US 12,325,667 B2
Processing method for ceramic-based composite material
Hiromichi Akiyama, Tokyo (JP); and Yasuhiko Tsuru, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Jun. 23, 2022, as Appl. No. 17/847,619.
Claims priority of application No. 2021-105620 (JP), filed on Jun. 25, 2021.
Prior Publication US 2022/0411338 A1, Dec. 29, 2022
Int. Cl. C04B 35/80 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); C04B 35/645 (2006.01)
CPC C04B 35/80 (2013.01) [C04B 35/6269 (2013.01); C04B 35/62892 (2013.01); C04B 35/645 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A processing method for a ceramic-based composite material in which the ceramic-based composite material is molded by layering sheets obtained by impregnating reinforced fibers with a slurry containing ceramic powder and calcining the sheets after curing, the processing method comprising:
preparing the slurry;
forming the sheets by immersing the reinforced fibers in a tank containing the slurry;
layering the sheets in a layering direction to form a laminate; and
covering the laminate with a vacuum bag and evacuating an inside of the vacuum bag to mold a cured laminate,
wherein:
in the forming the laminate, after the layering the sheets, the slurry is applied to a surface of the sheets; and
in the molding the cured laminate, a slurry-removing material configured to absorb excess slurry is disposed with respect to the laminate, and a degassing circuit member provided on at least one side of the laminate and being configured to discharge air bubbles generated inside the laminate is disposed with respect to the laminate.