Characterization of Sintered Ag Nanopowder Joints using Nanoindentation Tests

0364360 - ÚFM 2013 RIV CZ eng J - Článek v odborném periodiku
Buršík, Jiří - Sopoušek, J. - Buršíková, V. - Stýskalík, A. - Škoda, D.
Characterization of Sintered Ag Nanopowder Joints using Nanoindentation Tests.
Chemické listy. Roč. 105, Suppl. S (2011), S777-S778. ISSN 0009-2770. E-ISSN 1213-7103
Grant CEP: GA ČR(CZ) GA106/09/0700
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: solder * silver nanopowder * nanoindentation
Kód oboru RIV: JG - Hutnictví, kovové materiály
Impakt faktor: 0.529, rok: 2011

Since 2006, when regulations enforcing lead-free solders were implemented into the EU legislation, there is an ongoing drive to find the best lead-free alternatives. It turns out that there is no single replacement, which would cover all technical applications. Melting temperature of solder is of the primary concern for both economical and technological reasons. The melting point of bulk silver (as an example of low-toxic material) is 962 °C, which is far too high even in a category of high-temperature solders (defined by Tm ł 230 °C and limited by 350 °C due to polymer materials used in electronic industry). However, the effect of lowering melting point of powders with decreasing particle size can be turned to advantage in this case. We have synthesized a silver nanopowder. We have prepared model joints and studied the nanopowder sintering and local mechanical properties.
Trvalý link: http://hdl.handle.net/11104/0199863