caa a22 4500 463223292 CHVBK 20180405153219.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-1225-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-1225-y Deposition of electroless Ni on micro-sized acrylic spheres [Elektronische Daten] [W. Liu, S. Hsieh, T. Tsai, W. Chen] In this work a thin film of electroless Ni was deposited on the surface of commercial acrylic spheres about 4μm in size. After the acrylic spheres were cleaned, sensitized and activated successively, they were put into an acid plating bath containing sodium hypophosphite as reducing agent for the electroless Ni deposition. The acrylic spheres with a film of Ni deposit were molded into a cold set resin and ground and polished to form a cross section for observation. The thickness of the Ni film was measured and the state of the adhesion of Ni film to the surface of the acrylic sphere was observed by a scanning electron microscope. The results showed that the Ni film deposited in a plating bath with pH 4.2 can tightly adhere on the surface of the acrylic sphere due to the compressive stress of the Ni film. The thickness of the Ni film on the acrylic sphere can reach about 0.35μm in 3min of deposition time at 50-70°C of plating temperature. The activation energy of electroless Ni deposition in plating bath with pH 4.2 is about 28.50kJ/mole. The acrylic spheres with a layer of electroless Ni film deposited by the method proposed in this work can be further applied to anisotropic conductive adhesives in flip chip package. Springer Science+Business Media, LLC, 2006 Liu W. Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, 63201, Huwei, Yunlin, Taiwan aut Hsieh S. Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, 63201, Huwei, Yunlin, Taiwan aut Tsai T. Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, 63201, Huwei, Yunlin, Taiwan aut Chen W. Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, No.1, Shuehfu Rd., 91201, Neipu, Pingtung, Taiwan aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2121-2125 0022-2461 42:6<2121 2007 42 10853 https://doi.org/10.1007/s10853-006-1225-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1225-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu W. Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, 63201, Huwei, Yunlin, Taiwan aut NATIONALLICENCE 700 1- Hsieh S. Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, 63201, Huwei, Yunlin, Taiwan aut NATIONALLICENCE 700 1- Tsai T. Department of Materials Science and Engineering, National Formosa University, 64, Wunhua Road, 63201, Huwei, Yunlin, Taiwan aut NATIONALLICENCE 700 1- Chen W. Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, No.1, Shuehfu Rd., 91201, Neipu, Pingtung, Taiwan aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2121-2125 0022-2461 42:6<2121 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer