US 12,077,641 B2
Composites, systems and methods of making the same
Brent J. Carey, Columbus, OH (US); Christopher F. Buurma, Gahanna, OH (US); Richard G. Rateick, Jr., South Bend, IN (US); and Philip P. Cheney, Bexley, OH (US)
Assigned to Battelle Memorial Institute, Columbus, OH (US)
Filed by Battelle Memorial Institute, Columbus, OH (US)
Filed on Mar. 10, 2022, as Appl. No. 17/691,692.
Claims priority of provisional application 63/210,952, filed on Jun. 15, 2021.
Claims priority of provisional application 63/159,425, filed on Mar. 10, 2021.
Prior Publication US 2023/0235134 A1, Jul. 27, 2023
Int. Cl. B33Y 10/00 (2015.01); B29C 64/106 (2017.01); B33Y 40/20 (2020.01); B33Y 70/00 (2020.01); C01B 32/19 (2017.01); C01B 32/225 (2017.01); C08J 3/28 (2006.01); C08J 5/00 (2006.01)
CPC C08J 3/28 (2013.01) [B29C 64/106 (2017.08); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); C01B 32/19 (2017.08); C01B 32/225 (2017.08); C08J 5/005 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of forming a composite part comprising:
providing a substrate having polymer resin and one or a plurality of additives;
performing, with a laser, a first heating operation on said polymer resin and one or a plurality of additives and forming a subsurface layer on the substrate, said subsurface layer comprising graphite with a cellular structure;
performing, with a laser, a second heating operation on said subsurface layer and forming a graphitic surface layer on said subsurface layer, wherein the graphitic layer comprises graphite in an amount greater than the graphite present in said subsurface layer wherein said subsurface layer has a surface and a thickness perpendicular to said surface in the range of greater than or equal to about 500 microns to about 5.0 mm.