TY - JOUR A1 - Dreßler, Martin A1 - Dombrowski, Felix A1 - Simon, Ulla A1 - Börnstein, Julian A1 - Hodoroaba, Vasile-Dan A1 - Feigl, Michael A1 - Grunow, Sabrina A1 - Gildenhaar, Renate A1 - Neumann, Martin T1 - Influence of gelatine coatings on compressive strength of porous hydroxyapatite ceramics N2 - Porous ceramics prepared by the foam replication technique have a high porosity and low mechanical stability. It has been reported that coating such porous ceramics with gelatin allows for an improved compressive strength. Little details regarding the influence of important gelatin parameters such as concentration, temperature and drying conditions as well as bloom number which is a measure of the gel rigidity, on this toughening effect are available. This paper investigates the influence of these parameters on compressive strength of gelatin coated porous hydroxyapatite ceramics. It was found that concentration in the gelatin sols has a marked impact whereas sol temperature, bloom number and differing conditions during subsequent drying have only little influence on the compressive strength of the coated ceramics. KW - Films KW - Composites KW - Strength KW - Apatite KW - Biomedical application PY - 2011 U6 - https://doi.org/10.1016/j.jeurceramsoc.2010.11.004 SN - 0955-2219 SN - 1873-619X VL - 31 IS - 4 SP - 523 EP - 529 PB - Elsevier Ltd. CY - Oxford AN - OPUS4-23216 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - König, S. A1 - Diersch, R. A1 - Lührmann, A. A1 - Müller, Karsten A1 - Neumann, Martin A1 - Quercetti, Thomas A1 - Droste, Bernhard T1 - Full-Scale Drop Testing of the CONSTOR®, V/TC Package Program, and Preliminary Results KW - Drop test KW - Package KW - Spent fuel cask KW - Transport PY - 2005 SN - 0893-6188 VL - 33 IS - 3 SP - 4 EP - 10 PB - Institute of Nuclear Materials Management CY - Northbrook, Ill. AN - OPUS4-12269 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Petersohn, Dieter A1 - Neumann, Martin T1 - Untersuchungen zur Kathodolumineszenz von Leuchtstoffen und bedampften Objekten. Vermessung der spektralen Transmission dünner Schichten T2 - 10. Kolloquium des Arbeitskreises für Elektronenmikroskopische Direktabbildung und Analyse von Oberflächen (EDO) CY - Münster, Deutschland DA - 1977-09-04 PY - 1979 SN - 0340-3815 VL - 10 SP - 639 EP - 646 PB - Remy CY - Münster, Westf. AN - OPUS4-9157 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Eisenacher, Germar A1 - Scheidemann, Robert A1 - Neumann, Martin A1 - Droste, Bernhard A1 - Völzke, Holger T1 - Dynamic crushing characteristics of spruce wood under large deformations N2 - An extensive series of large deformation crushing tests with spruce wood specimens was conducted. Material orientation, lateral constraint and loading rate were varied. Regarding material orientation, a reduction in the softening effect and the general force level was observed with a higher fiber-load angle. A comparison with characteristics gained by application of Hankinson's formula showed discrepancies in compression strength and the beginning of the hardening effect. Lateral constraint of the specimens caused a multiaxial stress state in the specimens, which was quantified with the applied measuring method. Further, a higher force level compared to specimens without lateral constraint and significant hardening effect at large deformations resulted. Thus, the influence of a multiaxial stress state on the force level could be determined. An increase in the loading rate led to higher force levels at any displacement value and material orientation. KW - Crushing test KW - Dynamic crushing characteristics KW - Spruce wood KW - Lateral constraint KW - Multiaxial stress state KW - Hankinson's formula PY - 2013 U6 - https://doi.org/10.1007/s00226-012-0508-5 SN - 0043-7719 SN - 1432-5225 VL - 47 IS - 2 SP - 369 EP - 380 PB - Springer CY - Berlin AN - OPUS4-27743 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Neumann, Martin A1 - Wille, Frank A1 - Droste, Bernhard T1 - Scale model impact limiter in type assessment of radioactive material transport packages KW - Impact limiter KW - Shock absorber KW - Scaling KW - Radioactive KW - Material KW - Transport KW - Cask PY - 2008 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 19 IS - 1 SP - 53 EP - 57 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-17498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Neumann, Martin A1 - Wille, Frank A1 - Ballheimer, Viktor T1 - Approximation of package deceleration and shock absorber deformation under 9 m drop test conditions using simplified numerical tool ImpactCalc KW - Impact limiter KW - Calculation KW - Maximum deceleration KW - Maximum deformation PY - 2008 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 19 IS - 1 SP - 35 EP - 40 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-17499 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dreßler, Martin A1 - Nofz, Marianne A1 - Saliwan Neumann, Romeo A1 - Dörfel, Ilona A1 - Griepentrog, Michael T1 - Sol-gel derived alumina layers on nickel-base superalloy Inconel-718 (IN-718) N2 - Modified Yoldas sols can be used to prepare crack-free well adherent layers on different substrate materials such as soda–lime glass, corundum and metal (IN-718). These layers having thicknesses of 0.6 µm are strain tolerant and withstand thermal cycling between 810 °C and room temperature. Introducing alpha-Al2O3 filler particles into modified Yoldas sols allows the preparation of thicker layers of 1.6 µm, which as well can be thermally cycled without noticeable delaminations. Chemical bonding seems to be the predominant layer bonding mechanism. KW - Sol-gel KW - Alumosol KW - Filler particles KW - Inconel-718 KW - Scanning electron microscopy PY - 2008 U6 - https://doi.org/10.1016/j.tsf.2008.08.124 SN - 0040-6090 VL - 517 IS - 2 SP - 786 EP - 792 PB - Elsevier CY - Amsterdam AN - OPUS4-18263 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schmidt, Martin A1 - Malow, Marcus A1 - Krause, Ulrich A1 - Neumann, F. T1 - Untersuchung des Entzündungs- und Brandverhaltens von Steinkohlen unter dem Gesichtspunkt des Ex-Schutzes KW - Explosionsschutz KW - Steinkohle KW - Mahlanlagen KW - Selbstentzündung PY - 2007 SN - 1435-3199 VL - 87 IS - 7 SP - 67 EP - 72 PB - VGB PowerTech e.V. CY - Essen AN - OPUS4-15711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dreßler, Martin A1 - Nofz, Marianne A1 - Dörfel, Ilona A1 - Saliwan Neumann, Romeo T1 - Influence of sol-gel derived alumina coatings on oxide scale growth of nickel-base superalloy Inconel-718 N2 - Alumina coatings with differing phase compositions were deposited on Inconel-718 (IN-718) Ni-base superalloy substrates using sol–gel processing. Mass gain measurements served for studying the oxidation behavior of coated metal surfaces if exposed to 800°C and 900°C for up to 4000 h in static air. Itwas found, that alumina coatings significantly reduce the oxidation related mass gain of IN-718 even after heating to 900°C for 4000 h. Transmission electron microscopy (TEM) studies revealed diffusion of elements from the metal substrate (IN-718) into the alumina coatings and — to a much lower degree — from the coating into the substrate. These diffusion processes are greatly influenced by the phase composition of the coatings, especially by the presence of alpha-alumina. KW - Oxide scale growth KW - Inconel-718 KW - Alumina coating KW - TEM PY - 2008 U6 - https://doi.org/10.1016/surfcoat.2008.07.018 SN - 0257-8972 VL - 202 SP - 6095 EP - 6102 PB - Elsevier Science CY - Lausanne AN - OPUS4-17857 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - König, S. A1 - Diersch, R. A1 - Lührmann, A. A1 - Müller, Karsten A1 - Neumann, Martin A1 - Quercetti, Thomas A1 - Droste, Bernhard T1 - Full-scale Drop Testing of the CONSTOR V/TC Package - Program and Preliminary Results KW - Fallversuche KW - Transportbehälter für radioaktive Stoffe PY - 2005 SN - 0893-6188 VL - 33 IS - 3 SP - 4 EP - 10 PB - Institute of Nuclear Materials Management CY - Northbrook, Ill. AN - OPUS4-6875 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -