InImpact: The Journal of Innovation Impact

Publisher Future Technology Press
Vol. 7 No. 2 KES Transactions on SDM I - Sustainable Design and Manufacturing 2014
Volume Editors KES International
Journal ISSN 2051-6002
Article TitleLaser transmission welding of polymers and ceramics demonstrated on PMMA and LTCC
Primary AuthorKohler Robert, Karlsruhe Institute of Technology (Germany)
Other Author(s) Maika Torge; Heino Besser; Hans Jürgen Seifert; Wilhelm Pfleging
Pages 950 - 960
Article ID sdm14-097
Publication Date 01-May-16
AbstractJoining technologies for incompatible materials are of high interest in many application areas as they allow the combination of the advantages of different materials. This study demonstrates a joining technique for transparent polymers and ceramics using commonly applied materials as examples, namely polymethylmethacrylate (PMMA) and low-temperature co-fired ceramics (LTCC). The concept is to use pre-structured ceramic surfaces with cavities that can be filled with polymeric material locally molten during laser transmission welding. The laser processing used to create appropriate surface textures is described. A variation of the surface pattern was performed and analysed with respect to mechanical bond strength. It was discovered that an increased structure density leads to and increased bond strength reaching a maximum value of 5.2 MPa. Furthermore a technique based on laser transmission welding to replicate surface topographies down to the nanometre scale is described.
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