| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Müller, Philipp
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Development of polygon forming processes for aerospace engineering
- 2022Process-Integrated Lubrication in Sheet Metal Forming
- 2021Further development of wear calculation and wear reduction in cold forging processes
- 2021Fringe Projection Profilometry in Production Metrology: A Multi-Scale Comparison in Sheet-Bulk Metal Formingcitations
- 2020Hierarchical Surface Texturing of Hydroxyapatite Ceramics: Influence on the Adhesive Bonding Strength of Polymeric Polycaprolactonecitations
- 2020Investigation of the influence of an oscillation superposition on the wear behaviour in an industrial-like process
- 2020Investigations of the influence of a superimposed oscillation on the fatigue strength
- 2017The crystal structures of carbonyl iron powder – revised using in situ synchrotron XRPDcitations
- 2017Mehrkomponentenstrukturen aus Faserverbundwerkstoffen - Hybridbauweisen für die automobile Serienproduktion
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article
The crystal structures of carbonyl iron powder – revised using in situ synchrotron XRPD
Abstract
Although carbonyl iron powder (CIP) is an old material for magnetic applications (e.g. inductor cores), the structure of this material is still described controversially in literature. On the first glance a greyish powder exhibiting a spherical structure, CIP reveals on the second glance a nanoscopic crystalline sub-structure. The material itself contains carbon and nitrogen and its structure is described as an onion-type structure. However, the nature of the different shells and clarity on the nature of the involved carbidic and/or nitridic phases, be they crystalline, amorphous or solid solutions has not yet been achieved. In addition, it is known, that CIP transforms in H2-atmosphere to a “soft” grade, consisting of pure Fe. Again, chemical and microstructural knowledge on the transition from the “hard” to the “soft” CIP is lacking. This leads to the motivation of this study: 1. Unambiguously identify the nature and existence of the involved phases in the unreduced and hard carbonyl iron powder and in the reduced and soft iron powder particles 2. Characterize the phase transformations and microstructural changes of CIP during the thermic treatment in a hydrogen atmosphere. Different techniques were used to clarify the above mentioned points like in-situ synchrotron XRPD accompanied by electron microscopy techniques.