US 11,745,263 B2
Apparatus and method for a pressure-sintering connection
Dominic Birkicht, Emskirchen (DE); Kurt-Georg Besendörfer, Cadolzburg (DE); Silke Kraft, Nuremberg (DE); and Erik Michaelsen, Lauf (DE)
Assigned to SEMIKRON ELEKTRONIK GMBH & CO. KG, Nuremberg (DE)
Filed by SEMIKRON ELEKTRONIK GMBH & CO. KG, Nuremberg (DE)
Filed on Jul. 8, 2022, as Appl. No. 17/861,102.
Claims priority of application No. 10 2021 118 948.9 (DE), filed on Jul. 22, 2021.
Prior Publication US 2023/0023512 A1, Jan. 26, 2023
Int. Cl. B23K 20/00 (2006.01); B22F 7/06 (2006.01); B22F 3/14 (2006.01); B23K 20/02 (2006.01)
CPC B22F 7/064 (2013.01) [B22F 3/14 (2013.01); B23K 20/02 (2013.01); B23K 20/023 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus, for creating a pressure-sintering connection of a first and a second connection partner, comprising:
a supporting surface supporting said first and said second connection partner;
said second connection partner on said first connection partner;
said supporting surface having a frame element lowerable from a normal direction (N) of the supporting surface onto a frame surface surrounding the supporting surface;
a sintering ram lowerable from the normal direction onto the second connection partner operative to exert pressure on said second connection partner as a result of which a sintering paste between the connection partners is converted into a sintered metal;
an auxiliary apparatus operative to arrange a separating film that peripherally covers of the frame surface and the connection partners;
wherein the arrangement of the separating film produces an inner region which is bounded by the frame element and is bounded by a separating film portion lying within the frame element and by the supporting surface; and
wherein an injection opening and an outlet opening are arranged on said supporting surface in such a manner that a second gas flushing through said inner region from said injection opening to said outlet opening displaces a first gas which is already present in said inner region.