caa a22 4500 388022825 CHVBK 20180307124929.0 cr unu---uuuuu 161130e199805 xx s 000 0 eng 10.1557/JMR.1998.0152 doi S0884291400043892 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0152 Size dependent dewetting and sideband reaction of eutectic SnPb on Au/Cu/Cr multilayered thin film [Elektronische Daten] Dewetting of eutectic SnPb on blank Au(500 Å)/Cu(1 μm)/Cr(800 Å) layered structure was found to have a solder size dependence. At 250 °C, if the solder weight fell below 4 mg, dewetting occurred from the center of the solder cap; if the solder weight went beyond 6 mg, dewetting happened from the cap edge. In the latter case, a smaller cap with a higher wetting angle was formed at the center and a ring of solder was left around the edge. Large voids were left in the solder cap after dewetting in both cases. In contrast, all solder caps were found to dewet from the edge on a patterned film at 250 °C if the solder ball was large enough to wet the whole film initially, irrespective of the solder size. For comparison, pure Sn, eutectic SnAg, and eutectic SnBi caps also dewetted from the edge of the Au/Cu/Cr thin film, irrespective of the solder size or whether the substrate was patterned. Since eutectic SnPb on blank Au/Cu/Cr is the only case in which a large sideband growth was found and the dewetting occurred from the center, we postulated sideband to be the main factor which controls the unusual dewetting. The link between them is discussed. Copyright © Materials Research Society 1998 Zheng D. W. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 Jia Z. Y. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 Liu C. Y. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 Wen Weijia Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 Tu K. N. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 Journal of Materials Research Cambridge University Press 13/5(1998-05), 1103-1106 0884-2914 13:5<1103 1998 13 JMR https://doi.org/10.1557/JMR.1998.0152 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0152 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zheng D. W. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 NATIONALLICENCE 700 1- Jia Z. Y. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 NATIONALLICENCE 700 1- Liu C. Y. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 NATIONALLICENCE 700 1- Wen Weijia Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 NATIONALLICENCE 700 1- Tu K. N. Department of Materials Science and Engineering, UCLA, Los Angeles, California 90095-1595 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/5(1998-05), 1103-1106 0884-2914 13:5<1103 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge