Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Stefan Schafföner"'
Autor:
Jakob Denk, Xiaojian Liao, Wolfgang Knolle, Axel Kahnt, Andreas Greiner, Stefan Schafföner, Seema Agarwal, Günter Motz
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In this study, multifibrillar carbon and carbon/ceramic (C/SiCON) fibers consisting of thousands of single nanofibers are continuously manufactured. The process starts with electrospinning of polyacrylonitrile (PAN) and PAN/oligosilazane pre
Externí odkaz:
https://doaj.org/article/c884ea2523194e70be96b0f728e31137
Autor:
Wolfgang Freudenberg, Felix Wich, Jalena Best, Elena Moukhina, Tim Scherzer, Holger Ruckdäschel, Nico Langhof, Stefan Schafföner
Publikováno v:
Advanced Manufacturing: Polymer & Composites Science, Vol 10, Iss 1 (2024)
Carbon fiber reinforced polyetheretherketone (CF-PEEK) samples were fabricated using material extrusion. These additive manufactured green bodies are later processed to their final application as ceramic matrix composites (CMC) by the liquid silicon
Externí odkaz:
https://doaj.org/article/f66fb33be8e648f4afd8d8421ae715c2
Autor:
Elmar Galiev, Ricardo Trân, Sven Winter, Felix Lindner, Georg Puchas, Cornell Wüstner, Mandy Thomas, Stefan Knohl, Verena Psyk, Stefan Schafföner, Walter Krenkel, Verena Kräusel
Publikováno v:
Open Ceramics, Vol 15, Iss , Pp 100403- (2023)
Many modern automotive and aerospace components are heat-formed at temperatures up to 900 °C. Due to the high tool temperature, insulations are employed to reduce the heat loss and the energy consumption of the process. However, current insulation m
Externí odkaz:
https://doaj.org/article/b869d36089404623a5c728d3f7382993
Autor:
Michael Hoffmann, Mohamad Zahedtalaban, Jakob Denk, Alexander Horcher, Holger Ruckdäschel, Stefan Schafföner, Günter Motz
Publikováno v:
Open Ceramics, Vol 15, Iss , Pp 100384- (2023)
Polysilazane-based coatings exhibit excellent mechanical properties and chemical resistance, but thermal curing limits their range of applications. Therefore, the aim of the study was to evaluate the more resource-efficient curing of polyorganosilaza
Externí odkaz:
https://doaj.org/article/d187ef9e0fde4821b565f7723752d7f6
Publikováno v:
Journal of Materials Research and Technology, Vol 19, Iss , Pp 3433-3442 (2022)
A novel route was proposed to decrease the pore size and enhance the strength of microporous corundum-mullite refractory aggregates, which were fabricated by using the vacuum impregnation treatment of porous Al2O3 powder with silica sol. The effect o
Externí odkaz:
https://doaj.org/article/6fb36fbf3df44f37976a3bccf30002f0
Publikováno v:
Open Ceramics, Vol 14, Iss , Pp 100364- (2023)
Ceramic matrix composites like carbon fiber-reinforced silicon carbon (C/C–SiC) are brake materials for applications at high thermo-mechanical loads. This study investigates the influence of three C/C–SiC pad materials with different compositions
Externí odkaz:
https://doaj.org/article/2b8909b3369647029db2521c2ce7e23a
Autor:
Felix Wich, Stefan Flauder, Natalie Schneider, Michael Fleck, Nico Langhof, Walter Krenkel, Stefan Schafföner
Publikováno v:
Advanced Manufacturing: Polymer & Composites Science, Vol 9, Iss 1 (2023)
AbstractThis work investigates the influence of the hexamethylenetetramine (hexa) content on the rheological features, pyrolysis reactions, mass-loss kinetics and char yield for two phenolic resins, each with different novolak-hexa mixtures from 0 wt
Externí odkaz:
https://doaj.org/article/a4e732cc58204ec3989f4458a5808356
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-13 (2022)
Abstract Scratch formation on glass surfaces is a ubiquitous phenomenon induced by plastic deformation, often accompanied by radial, lateral or median cracks with consequent chipping and brittle fracture caused during and after the event of dynamic a
Externí odkaz:
https://doaj.org/article/d96da3ed16864a39b485f788f747f98f
Publikováno v:
Advanced Materials Interfaces, Vol 9, Iss 11, Pp n/a-n/a (2022)
Abstract In face of an accelerating climate change, the reduction and substitution of fossil fuels is crucial to decarbonize energy production. Gas turbines can operate with versatile fuel sources like natural gas and future fuels such as hydrogen an
Externí odkaz:
https://doaj.org/article/7749f5268ffa48e9a75cb4cecf72aebd
Publikováno v:
Processing and Application of Ceramics, Vol 14, Iss 3, Pp 268-275 (2020)
Porous MgAl2O4 ceramics were prepared via in-situ decomposition pore-forming (ISDP) technique using Al(OH)3 and magnesite as raw materials. The influence of Al(OH)3 particle size (0–44 µm, 44–88 µm, 88–100 µm, 100–150 µm) on the microstru
Externí odkaz:
https://doaj.org/article/e5a1761eb5ac40969e60f6e5fb349af2