US 11,731,196 B2
Method for forming multi-material electromagnetic shield
Samad A. Firdosy, Pasadena, CA (US); Robert P. Dillon, Long Beach, CA (US); Nicholas E. Ury, Pasadena, CA (US); Katherine Dang, Pasadena, CA (US); Joshua Berman, Pasadena, CA (US); Pablo Narvaez, Pasadena, CA (US); Vilupanur A. Ravi, Claremont, CA (US); John Paul Castelo Borgonia, Monrovia, CA (US); Joelle T. Cooperrider, Pasadena, CA (US); Bryan W. McEnerney, Pasadena, CA (US); and Andrew A. Shapiro-Scharlotta, Glendale, CA (US)
Assigned to California Institute of Technology, Pasadena, CA (US)
Filed by California Institute of Technology, Pasadena, CA (US)
Filed on Aug. 5, 2021, as Appl. No. 17/394,881.
Claims priority of provisional application 63/061,643, filed on Aug. 5, 2020.
Prior Publication US 2022/0203442 A1, Jun. 30, 2022
Int. Cl. B22F 7/02 (2006.01); B22F 10/28 (2021.01); B22F 3/15 (2006.01); B22F 10/64 (2021.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); H05K 9/00 (2006.01); B33Y 40/20 (2020.01)
CPC B22F 7/02 (2013.01) [B22F 3/15 (2013.01); B22F 10/28 (2021.01); B22F 10/64 (2021.01); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 80/00 (2014.12); H05K 9/0081 (2013.01); B22F 2301/35 (2013.01); B22F 2304/10 (2013.01); Y10T 29/49002 (2015.01)] 30 Claims
OG exemplary drawing
 
1. A method for forming a multi-material electromagnetic shield comprising:
providing at least one powderized feedstock of a magnetic alloy;
determining at least one printing parameter for an additive manufacturing process;
depositing the at least one powderized feedstock in a vertical orientation using the determined at least one printing parameter to additively manufacture an electromagnetic shield with at least one shield wall; and
post-processing the electromagnetic shield by at least one of stress relief anneal, hot isostatic pressing, full anneal, and surface finishing;
wherein the at least one powderized feedstock is delivered by at least one powder feeder;
wherein the additive manufacturing process uses a laser as a power source;
wherein the deposition is in a chamber filled with an inert gas; and
wherein the thickness of the at least one shield wall is controlled by a spot size of the laser.