US 11,883,978 B2
In situ synthesis, densification and shaping of non-oxide ceramics by vacuum additive manufacturing technologies
Paolo Fino, Turin (IT); Laura Montanaro, Turin (IT); Mariangela Lombardi, Turin (IT); Sara Biamino, Asti (IT); and Abdollah Saboori, Turin (IT)
Assigned to POLITECNICO DI TORINO, Turin (IT)
Appl. No. 17/256,753
Filed by POLITECNICO DI TORINO, Turin (IT)
PCT Filed Jul. 4, 2019, PCT No. PCT/IB2019/055720
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2020/008410, PCT Pub. Date Jan. 9, 2020.
Claims priority of application No. 102018000006916 (IT), filed on Jul. 4, 2018.
Prior Publication US 2021/0283801 A1, Sep. 16, 2021
Int. Cl. B32B 1/00 (2006.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01); B33Y 80/00 (2015.01); B28B 11/24 (2006.01); C04B 35/80 (2006.01); C04B 35/573 (2006.01); C04B 35/653 (2006.01); C04B 35/65 (2006.01); B28B 1/00 (2006.01)
CPC B28B 1/001 (2013.01) [B28B 11/243 (2013.01); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01); B33Y 80/00 (2014.12); C04B 35/573 (2013.01); C04B 35/652 (2013.01); C04B 35/653 (2013.01); C04B 35/80 (2013.01); C04B 2235/3826 (2013.01); C04B 2235/425 (2013.01); C04B 2235/428 (2013.01); C04B 2235/528 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/6026 (2013.01); C04B 2235/6581 (2013.01); C04B 2235/661 (2013.01); C04B 2235/665 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vacuum additive manufacturing process for the production of complex shape non-oxide ceramics and ceramics matrix composites with ceramic reinforcements, the process performing in a single step the in situ synthesis, controlled densification and shaping of non-oxide ceramics as mono-phase like SiC or multi-phase like complex ceramic composite materials, said process consisting in one-step reaction of powdered, electrically conductive, metallic particles with powdered non-metallic particles in a production chamber, wherein the thermal energy is supplied by one or more energy sources, a powder bed is progressively deposited and the energy source is focused on said powder bed, generating heat and selectively melting said powdered metallic and non-metallic particles following 3D model data to simultaneously shaping and consolidating the desired component.