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公开(公告)号：EP3524280A1
公开(公告)日：2019-08-14
申请号：EP18156257.0
申请日：2018-02-12
发明人： Haramus, Vasyl , Ebel, Thomas , Ramakrishnegowda, Niranjan , Bußacker, Sascha , Schaper, Johannes Geronimo
摘要： The present invention relates to a novel method for producing shaped metal bodies useful as implant for orthopedic surgery or dental practice. The method yields shaped metal bodies having a titanium or titanium alloy core thoroughly or partially coated with magnesium or a magnesium alloy. The method makes use of metal injection moulding (MIM) or fused filament fabrication (FFF), which are metalworking processes by which finally-powdered metal is mixed with a measured amount of a binder material to comprise a "feedstock" capable of being handled by plastic processing equipment through a process known as injection moulding. The moulding process allows dilated (oversized due to the presence of binder) complex parts to be shaped in a single step. After moulding, the powder-binder mixture is subjected to steps that remove the binder (debinding), and sintering densify the powders. Both, the core of the shaped metal bodies of titanium or a titanium alloy, and thereafter the magnesium or magnesium alloy coating are prepared by subsequent MIM steps.
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公开(公告)号：EP3524280B1
公开(公告)日：2020-01-08
申请号：EP18156257.0
申请日：2018-02-12
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公开(公告)号：EP4292731A1
公开(公告)日：2023-12-20
申请号：EP22179509.9
申请日：2022-06-17
申请人： Element 22 GmbH
发明人： Scharvogel, Matthias , Schaper, Johannes Geronimo , Winkelmüller, Wendelin , Gerdts, Florian , Lang, Markus
摘要： A method for producing layered sheet structures from titanium or titanium alloy metal for use in or as electrodes of PEM-type electrolyzers and/or fuel cells comprising the following steps:
a) providing a first sheet-like green part that is formed from a powder of titanium metal, titanium alloy metal and/or titanium hydride and from at least one binder material by selectively positioning material and leaving voids or open spaces therebetween, said first sheet-like green part being a green part of a first metal sheet layer,
or providing a first metal sheet layer comprising a metallic frame structure including voids or open spaces,
b) providing a second sheet-like green part that is formed from a powder of titanium metal, titanium alloy metal and/or titanium hydride and from at least one binder material, said second sheet-like green part being a green part of a second, porous metal sheet layer,
or providing a second metal sheet layer in the form of a porous metal sheet layer,
c) forming a stack comprising
i. the first sheet-like green part and the second sheet-like green part or
ii. the first sheet-like green part and the second metal sheet or
iii. the first metal sheet and the second sheet-like green part,
d) debinding the green part or green parts and sintering the stack to densify the green part or green parts contained therein and to simultaneously bond the metal sheet layers of the stack.
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