naa a22 4500 510771939 CHVBK 20180411083217.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11837-013-0582-7 doi (NATIONALLICENCE)springer-10.1007/s11837-013-0582-7 Latent Cracking of Tantalum-Titanium Welds Due to Hydrogen Embrittlement [Elektronische Daten] [Joachim Hossick-Schott, Markus Reiterer, Jason Heffelfinger, Mike Hintz, Mike Ringle, Iryna Levina, Kevin Gaffney] Establishing electrical interconnects in implantable electronic medical devices frequently requires joining of dissimilar materials. A weld between a tantalum wire and titanium sheet metal on a contact module is presented as an example for dissimilar joining. Latent, brittle cracking was observed in the proximity of the weld upon pull testing. The weld cracking occurs by the mechanism known as hydrogen stress cracking (HSC) and is due to titanium hydride formation. Diffusion facilitated hydrogen transport into the weld area. Diffusing hydrogen accumulates preferably in regions of high stress, causing latent titanium hydride formation and embrittlement of the weld. A broad array of analytical tools such as scanning electron microscopy (SEM), transmission electron microscopy, electron backscattered diffraction, dynamic secondary ion mass spectroscopy, and nanoindentation were utilized to identify the root cause for HSC. TMS, 2013 Hossick-Schott Joachim Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut Reiterer Markus Corporate Core Technologies Department, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut Heffelfinger Jason Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut Hintz Mike Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut Ringle Mike Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut Levina Iryna Medtronic Cardiac Rhythm and Disease Management, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut Gaffney Kevin Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut JOM Springer US; http://www.springer-ny.com 65/5(2013-05-01), 625-629 1047-4838 65:5<625 2013 65 11837 https://doi.org/10.1007/s11837-013-0582-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0582-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hossick-Schott Joachim Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 700 1- Reiterer Markus Corporate Core Technologies Department, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 700 1- Heffelfinger Jason Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 700 1- Hintz Mike Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 700 1- Ringle Mike Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 700 1- Levina Iryna Medtronic Cardiac Rhythm and Disease Management, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 700 1- Gaffney Kevin Medtronic Energy and Component Center, Medtronic, Inc, Brooklyn Center, 55430, MN, USA aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/5(2013-05-01), 625-629 1047-4838 65:5<625 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer