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Markus Ostermann

Markus Ostermann
TU Wien | TU Wien · Institute of Chemical Technologies and Analytics

Master of Science

About

9
Publications
783
Reads
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3
Citations
Citations since 2016
9 Research Items
3 Citations
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Publications

Publications (9)
Article
Full-text available
To reduce the global emissions of CO2, the aviation industry largely relies on new light weight materials, which require multifunctional coatings. Graphene and its derivatives are particularly promising for combining light weight applications with functional coatings. Although they have proven to have outstanding properties, graphene and its precur...
Article
Full-text available
Lower WC grain sizes in the nanometer range have positive effects on the properties of hardmetals (e.g., hardness), but the established production processes of WC are limited to grain sizes of about 150 nm. To produce WC powder with grain sizes in the lower nanometer range, an alternative WC production process based on the chemical vapor transport...
Article
Full-text available
The industrial production of tungsten powder is carried out by the reduction of tungsten oxide powder via hydrogen. In this process, the size of the W particles is limited to particle sizes larger than 100 nm. To get below this limit, alternative processes are needed. In the current work, the possibility of preparing W powder below 100 nm via a vap...
Conference Paper
Full-text available
The production of very fine grained WC powders is of interest, due to the positive effects of smaller grain sizes on the mechanical properties of WC-Co hardmetals. With traditional processes starting with hydrogen reduction of WO3 to W and followed by carburization with carbon to WC, it is difficult to achieve nano-sized WC powders. In this study,...
Poster
The production of very fine grained WC powders is of interest, due to the positive effects of smaller grain sizes on the mechanical properties of WC-Co hardmetals. With traditional processes starting with hydrogen reduction of WO3 to W and followed by carburization with carbon to WC, it is difficult to achieve nano-sized WC powders. In this study,...
Thesis
The production of nano-sized WC powders is of high technical interest to increase the properties, such as hardness, of high performance hardmetals, by using smaller grain sizes. Due to the limitation of established industrial processes to achieve grain sizes in the nanometer range, alternative processes for the production of nano-sized WC powders h...
Thesis
Slag and copper samples of the Bronze Age found by the archaeologist Peter Trebsche in Prigglitz-Gasteil (Lower Austria) were analyzed using metallography, SEM, RFA and XRD. The determined composition of the different samples allow conclusions on the used ores, temperatures and in some extent also on technical properties used for the Bronze Age cop...

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