TY - CONF A1 - Mieller, Björn A1 - Rabe, Torsten T1 - Hot-embossing of low temperature co-fired ceramics during pressure-assisted sintering N2 - A novel process to structure the surfaces of low temperature co-fired ceramics (LTCC) is presented. Lowered and raised structures are formed by hot-embossing with glass-like carbon molds during pressure-assisted sintering. Molding is driven by viscous flow of the LTCC glassy phase above the glass transition temperature. For accurate molding of embossments on the LTCC surface, proper filling of cavities in the glass-like carbon mold is necessary. Therefore, de-airing of the mold cavity has to be assured. Two strategies have been investigated: (i) hot-embossing at 850 °C after termination of LTCC shrinkage with de-airing through vent holes in the mold; and (ii) hot-embossing of open porous LTCC at 775 °C with dense molds, de-airing through pore channels in the LTCC, and subsequent densification by further heating to 850 °C. Circular embossments with 10 mm diameter were molded on a commercially available LTCC (Ceramtape GC, CeramTec GmbH, Marktredwitz, Germany). The sintered height was measured using optical profilometry. Image processing was used to evaluate porosity distributions in the sintered structures. The influence of embossing temperature on LTCC viscosity and mold filling behavior is discussed. Successful molding of 47 µm high raised grids and characters by hot embossing with 0.41 MPa at 775 °C and further heating to 850 °C under constant load is demonstrated. Thereby, the high potential of hot-embossing for precise structuring of LTCC surfaces is illustrated. T2 - 91. Jahrestagung der Deutschen Keramischen Gesellschaft CY - Freiberg DA - 07.03.2016 KW - Low temperature co-fired ceramics KW - Pressure-assisted sintering KW - Glass-like carbon KW - Structuring KW - Hot-embossing PY - 2016 N1 - Geburtsname von Mieller, Björn: Brandt, Björn Birth Name of Mieller, Björn: Brandt, Björn AN - OPUS4-35538 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Mücke, Udo A1 - Rudert, Rainer A1 - Uematsu, K. T1 - Characterization of defects in dry-pressed green bodies T2 - Proceedings of the 7th Conference & Exhibition of the European Ceramic Society T2 - Proceedings of the 7th Conference & Exhibition of the European Ceramic Society CY - Bruges, Belgium DA - 2001-09-09 PY - 2001 AN - OPUS4-3548 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Kuchenbecker, Petra A1 - Schulz, Bärbel A1 - Schmidt, M. T1 - Hot embossing - an alternative method to produce cavities in ceramic multilayers T2 - IMAPS/ACerS International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies T2 - IMAPS/ACerS International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies CY - Denver, CO, USA DA - 2006-04-24 PY - 2006 AN - OPUS4-12421 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Kuchenbecker, Petra A1 - Schulz, Bärbel A1 - Schmidt, M. T1 - Strukturierung keramischer Multilayer mittels Heißprägen T2 - Jahrestagung der DKG T2 - Jahrestagung der DKG CY - Stuttgart, Germany DA - 2006-04-03 PY - 2006 AN - OPUS4-12423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Rudert, Rainer T1 - Zerstörungsfreie Prüfung an grünen Folien und Laminaten T2 - Kolloquium des DKG/DGM-Arbeitskreis "Grünkörpercharakterisierung" T2 - Kolloquium des DKG/DGM-Arbeitskreis "Grünkörpercharakterisierung" CY - Stuttgart, Germany DA - 2002-09-27 PY - 2002 AN - OPUS4-6293 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Schiller, Wolfgang Arno T1 - Innovations in Materials Development and Ceramic Processing - Preconditions of New Market for Low Temperature Cofired Ceramics (LTCC) T2 - DKG & NKV, Annual Meeting 2002 T2 - DKG & NKV, Annual Meeting 2002 CY - Eindhoven, Netherlands DA - 2002-10-21 PY - 2002 AN - OPUS4-6296 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Defekte in keramischen Grünkörpern und Verfahren zu deren Bewertung T2 - Institutsseminar am Fraunhofer-Instituts Keramischen Technologien und Sinterwerkstoffe T2 - Institutsseminar am Fraunhofer-Instituts Keramischen Technologien und Sinterwerkstoffe CY - Dresden, Germany DA - 2002-05-27 PY - 2002 AN - OPUS4-6288 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Defektnachweis an keramischen Grünkörpern - Bedarf, Realität, Vision T2 - Kolloquium des DKG/DGM-Arbeitskreis "Festigkeit, Lebensdauer und zerstörungsfreie Prüfung keramischer Bauteile" T2 - Kolloquium des DKG/DGM-Arbeitskreis "Festigkeit, Lebensdauer und zerstörungsfreie Prüfung keramischer Bauteile" CY - Berlin, Germany DA - 2002-03-17 PY - 2002 AN - OPUS4-6290 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Eberlee, I. T1 - Mechanische und thermomechanische Charakterisierung von keramischen Grünfolien T2 - Sitzung des DKG/DGM Arbeitskreises "Grünkörpercharakterisierung" T2 - Sitzung des DKG/DGM Arbeitskreises "Grünkörpercharakterisierung" CY - Zurich, Switzerland DA - 2004-06-17 PY - 2004 AN - OPUS4-6586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten A1 - Stark, Wolfgang A1 - Eberlee, I. A1 - Güther, Wolfgang T1 - Mechanische und thermomechanische Charakterisierung keramischer Grünfolien T2 - DKG-Symposium "Verfahren der keramischen Mehrlagentechnik: Stand und Zukunftsperspektiven" T2 - DKG-Symposium "Verfahren der keramischen Mehrlagentechnik: Stand und Zukunftsperspektiven" CY - Erlangen, Germany DA - 2004-11-30 PY - 2004 AN - OPUS4-6589 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -