US 12,313,352 B2
Heat exchanger and method of making same
James F. Klausner, Haslett, MI (US); André Bénard, Okemos, MI (US); Patrick Youngseon Kwon, Okemos, MI (US); Haseung Chung, Ann Arbor, MI (US); and Himanshu Sahasrabudhe, East Lansing, MI (US)
Assigned to Board of Trustees of Michigan State University, East Lansing, MI (US)
Appl. No. 17/625,186
Filed by Board of Trustees of Michigan State University, East Lansing, MI (US)
PCT Filed Jul. 2, 2020, PCT No. PCT/US2020/040616
§ 371(c)(1), (2) Date Jan. 6, 2022,
PCT Pub. No. WO2021/007093, PCT Pub. Date Jan. 14, 2021.
Claims priority of provisional application 62/871,908, filed on Jul. 9, 2019.
Prior Publication US 2022/0373273 A1, Nov. 24, 2022
Int. Cl. F28F 3/04 (2006.01); B22F 3/16 (2006.01); B22F 3/24 (2006.01); F28D 9/00 (2006.01)
CPC F28F 3/04 (2013.01) [B22F 3/16 (2013.01); B22F 3/24 (2013.01); F28D 9/005 (2013.01); B22F 2003/247 (2013.01); F28F 2230/00 (2013.01); F28F 2255/18 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of making a heat exchanger component, the method comprising:
(a) metal laser sintering to melt together powder metal;
(b) hot isostatic pressing the powdered metal by placing the sintered powder metal into an envelope and then applying fluid pressure to at least a majority of the external surfaces of the sintered powder metal while also applying heat;
(c) creating the heat exchanger component by the sintering and pressing steps;
(d) making the heat exchanger component from a nickel alloy comprising one of: (i) a minority by weight portions of chromium and tungsten; (ii) Y2O3; or (iii) ZrO2;
(e) polishing or grinding a sealing area; and
(f) attaching a gasket to the sealing area of the heat exchanger component.