caa a22 4500 463224728 CHVBK 20180405153223.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-007-1593-y doi (NATIONALLICENCE)springer-10.1007/s10853-007-1593-y Microstructural evolution of gold-aluminum wire-bonds [Elektronische Daten] [Adi Karpel, Giyora Gur, Ziv Atzmon, Wayne Kaplan] The purpose of this study is to understand the morphological changes that occur during annealing of Al-Au wire-bonds, by analyzing the interface region of annealed model wire-bonded samples between 5N (99.999%) Au wires and Al pads. Due to the small length scale of the intermetallic region at the interface of the bond, the analysis was done using scanning/transmission electron microscopy combined with energy dispersive spectroscopy. Samples were prepared using a dual-beam focused ion beam system. Microstructural characterization showed that during annealing, a Au-rich intermetallic region was formed under the bond and at the periphery of the bond. Two types of failures occurred during annealing: crack formation at the bond periphery due to an increase in volume during intermetallic growth and the formation of stresses; and oxidation of the AlAu4 phase adjacent to the Au ball, which resulted in the formation of continuous cracks between the Au ball and the intermetallic region. The characteristic void-line found inside the intermetallic region played no part in failure that occurred during exposure to elevated temperatures. Springer Science+Business Media, LLC, 2007 Karpel Adi Department of Materials Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel aut Gur Giyora Kulicke & Soffa Bonding Tools, 20692, Yokneam Elite, Israel aut Atzmon Ziv Kulicke & Soffa Bonding Tools, 20692, Yokneam Elite, Israel aut Kaplan Wayne Department of Materials Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2347-2357 0022-2461 42:7<2347 2007 42 10853 https://doi.org/10.1007/s10853-007-1593-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1593-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karpel Adi Department of Materials Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel aut NATIONALLICENCE 700 1- Gur Giyora Kulicke & Soffa Bonding Tools, 20692, Yokneam Elite, Israel aut NATIONALLICENCE 700 1- Atzmon Ziv Kulicke & Soffa Bonding Tools, 20692, Yokneam Elite, Israel aut NATIONALLICENCE 700 1- Kaplan Wayne Department of Materials Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2347-2357 0022-2461 42:7<2347 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer