TY - CONF A1 - Dreßler, Martin T1 - Herstellung von Biokeramik mittels rapid prototyping T2 - Kooperationsforum "Generative Fertigungs-technologien" CY - Berlin, Germany DA - 2009-04-29 PY - 2009 AN - OPUS4-19679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Bioceramics with bone-morphology T2 - bone tech 2008 CY - Hanover, Germany DA - 2008-11-07 PY - 2008 AN - OPUS4-17638 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Hochtemperatur Oxidationsschutz von INCONEL-718 T2 - Hannover Messe CY - Hanover, Germany DA - 2008-04-25 PY - 2008 AN - OPUS4-18097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Keramische Schichten für den Oxidationsschutz T2 - EuroMold 2008 CY - Frankfurt am Main, Germany DA - 2008-12-03 PY - 2008 AN - OPUS4-18099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dreßler, Martin A1 - Reinsch, Stefan A1 - Schadrack, Reinhard A1 - Benemann, Sigrid T1 - Burnout behavior of ceramic coated open cell polyurethane (PU) sponges N2 - Open cell rigid foams made from polyurethane (PU) are frequently used in ceramic processing for preparation of porous ceramics by the so-called replica technique. This work presents data regarding the PU burnout, shrinkage characteristics as well as the morphology of the ceramic coated PU sponges during heating up. Shrinkage of the ceramic coated PU sponges closely follows the mass loss due to PU decomposition. Two temperatures (i) 267 °C and (ii) 380 °C were identified at which PU decomposition reaches local maxima. Shrinkage measurements on ceramic coated PU sponges reveal that both PU decomposition stages lead to similar extends of shrinkage in the ceramic coated PU sponge. Differential thermal analysis (DTA) showed that the two decomposition related temperatures (267 and 380 °C) differ concerning the energy release. While the low-temperature signal is endothermic, an exothermic signal was detected at 380 °C. The morphology of the ceramic coated PU sponges was investigated with scanning electron microscopy (SEM) which gave insight into the formation of hollow ceramic struts-a well known feature of ceramics being prepared by the replica technique. KW - Polyurethane (PU) KW - Porous ceramics KW - Mass spectrometry KW - Thermal analysis PY - 2009 DO - https://doi.org/10.1016/j.jeurceramsoc.2009.07.025 SN - 0955-2219 SN - 1873-619X VL - 29 IS - 16 SP - 3333 EP - 3339 PB - Elsevier CY - Oxford AN - OPUS4-20092 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Generative Fertigungstechniken für die Biokeramik T2 - Tagung des AK Keramikbearbeitung am Institut für Werkzeugmaschinen und Fabrikbetrieb, Fachgebiet Werkzeugmaschinen und Fertigungstechnik der TU Berlin CY - Berlin, Germany DA - 2009-10-01 PY - 2009 AN - OPUS4-20203 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Erfahrungen und Vorgehensweise bei chemisch/ physikalischen Materialprüfungen T2 - Veranstaltungsreihe "Risikobasierte biologische Beurteilung und Sicherheitsprüfungen von Medizinprodukten" CY - Potsdam, Germany DA - 2009-10-15 PY - 2009 AN - OPUS4-20204 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Resorbable ceramics scaffolds with bone-like morphology T2 - Rapid Prototyping in Regenerative Medicine at the 4th Fraunhofer Life Science Symposium CY - Leipzig, Germany DA - 2009-10-29 PY - 2009 AN - OPUS4-20205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Nofz, Marianne A1 - Sojref, Regine A1 - Feigl, Michael A1 - Dreßler, Martin A1 - Dörfel, Ilona T1 - Sol-Gel-Aluminiumoxidschichten für den Oxidationsschutz von Hochtemperaturlegierungen, Teil 2 KW - Alumosol KW - Sol-Gel-Verfahren KW - Beschichtung KW - Oxidationsschutz PY - 2009 SN - 0023-0561 VL - 61 IS - 5 SP - 272 EP - 277 PB - DVS-Verl. CY - Düsseldorf AN - OPUS4-20263 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Nofz, Marianne A1 - Sojref, Regine A1 - Feigl, Michael A1 - Dreßler, Martin A1 - Dörfel, Ilona T1 - Sol-Gel-Aluminiumoxidschichten für den Oxidationsschutz von Hochtemperaturlegierungen, Teil 1 KW - Alumosol KW - Sol-Gel-Verfahren KW - Beschichtung KW - Oxidationsschutz PY - 2009 SN - 0023-0561 VL - 61 IS - 2-3 SP - 82 EP - 86 PB - DVS-Verl. CY - Düsseldorf AN - OPUS4-20264 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dreßler, Martin A1 - Nofz, Marianne A1 - Klobes, Peter A1 - Dörfel, Ilona A1 - Reinsch, Stefan T1 - Differences between films and monoliths of sol-gel derived aluminas N2 - This work compares thin layers (films) and monoliths prepared from alumina sols with respect to their microstructure, thermal evolution, porosity and specific surface area. After heat treatment at similar temperatures, films and monoliths showed the same qualitative changes in porosity and specific surface area. However, some marked quantitative differences were detected. Film fragments had a lower open porosity, a lower specific surface area and a narrower pore size distribution. Furthermore, the thermal evolution showed a markedly different burnout of organic components between films and monoliths. The observed differences between films and monolith can be explained by the ageing history of the sols during sample preparation. KW - Sol-gel processing KW - Alumina KW - Phase transitions KW - Porosity PY - 2010 DO - https://doi.org/10.1016/j.tsf.2010.07.057 SN - 0040-6090 VL - 519 IS - 1 SP - 42 EP - 51 PB - Elsevier CY - Amsterdam AN - OPUS4-22606 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dreßler, Martin A1 - Nofz, Marianne A1 - Pauli, Jutta A1 - Jäger, Christian T1 - Influence of polyvinylpyrrolidone (PVP) on alumina sols prepared by a modified Yoldas procedure N2 - Al13 polycations containing alumina sols, prepared by a modified Yoldas procedure were mixed with polyvinylpyrrolidone (PVP). Although Al speciation in freshly prepared sols was not affected by PVP addition the decay rate of Al13 polycations was slightly decreased in PVP-containing sols. PVP does not show any influence on particle size and particle growth. The influence of PVP addition on viscosity and flow behavior of modified Yoldas sols depends on their solids content and NO3-/Al molar ratio. KW - ModifiedYoldas sols KW - PVP KW - NMR KW - Rheology KW - Particle size KW - Aging PY - 2008 DO - https://doi.org/10.1007/s10971-008-1798-9 SN - 0928-0707 SN - 1573-4846 VL - 47 IS - 3 SP - 260 EP - 267 PB - Kluwer Academic Publ. CY - Dordrecht AN - OPUS4-17854 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -