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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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Kolb, Ute
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Microstructure Characterization and Mechanical Properties of Polymer‐Derived (HfₓTa₁₋ₓ)C/SiC Ceramic Prepared upon Field‐Assisted Sintering Technique/Spark Plasma Sintering
- 2024Microstructure Characterization and Mechanical Properties of Polymer‐Derived (Hf<sub><i>x</i></sub>Ta<sub>1−<i>x</i></sub>)C/SiC Ceramic Prepared upon Field‐Assisted Sintering Technique/Spark Plasma Sinteringcitations
- 2023Synthesis and Structure Evolution in Metal Carbazole Diphosphonates Followed by Electron Diffractioncitations
- 2022Crystal structure determination of a new LaPO4 phase in a multicomponent glass ceramic via 3D electron diffractioncitations
- 2021Electrochemical reduction and oxidation of Ruddlesden–Popper-type La2NiO3F2 within fluoride-ion batteriescitations
- 20193D Electron Diffraction: The Nanocrystallography Revolutioncitations
- 2018Highly stable and porous porphyrin-based zirconium and hafnium phosphonates - electron crystallography as an important tool for structure elucidationcitations
- 2018From Single Molecules to Nanostructured Functional Materialscitations
- 2017Snapshots of calcium carbonate Formation - a step by step analysiscitations
- 2016Hierachical Ni@Fe2O3 superparticles through epitaxial growth of gamma-Fe2O3 nanorods on in situ formed Ni nanoplatescitations
- 2015Structural insights into<i>M</i><sub>2</sub>O–Al<sub>2</sub>O<sub>3</sub>–WO<sub>3</sub>(<i>M</i>= Na, K) system by electron diffraction tomographycitations
- 2015Crystalline Non‐Equilibrium Phase of a Cobalt(II) Complex with Tridentate Ligandscitations
- 2015Structural insights into M2O–Al2O3–WO3 (M = Na, K) system by electron diffraction tomographycitations
- 2014Rational assembly and dual functionalization of Au@MnO heteroparticles on TiO2 nanowirescitations
- 2014Atomic structure solution of the complex quasicrystal approximant Al77Rh15Ru8 from electron diffraction datacitations
- 2013In situ high pressure high temperature experiments in multi-anvil assemblies with bixbyite-type $In_{2}O_{3}$ and synthesis of corundum-type and orthorhombic $In_{2}O_{3}$ polymorphscitations
- 2013Graphene-type sheets of Nb1-xWxS2citations
- 2011Hydrogen peroxide sensors for cellular imaging based on horse radish peroxidase reconstituted on polymer-functionalized TiO2 nanorodscitations
- 2009Electron diffraction, X-ray powder diffraction and pair-distribution-function analyses to determine the crystal structures of Pigment Yellow 213, C<sub>23</sub>H<sub>21</sub>N<sub>5</sub>O<sub>9</sub>citations
- 2007Solid-state pyrolysis of polyphenylene-metal complexes:A facile approach toward carbon nanoparticlescitations
- 2005Uniaxial alignment of poly cyclic aromatic hydrocarbons by solution processingcitations
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article
Microstructure Characterization and Mechanical Properties of Polymer‐Derived (Hf<sub><i>x</i></sub>Ta<sub>1−<i>x</i></sub>)C/SiC Ceramic Prepared upon Field‐Assisted Sintering Technique/Spark Plasma Sintering
Abstract
<jats:p>The high‐temperature microstructural evolution and mechanical properties of two SiC‐based polymer‐derived ceramics with different Hf:Ta molar ratios are investigated using electron microscopy techniques and manipulated by nanoindentation. The as‐pyrolyzed ceramic powder consists of an amorphous Si(Hf<jats:sub><jats:italic>x</jats:italic></jats:sub>Ta<jats:sub>1−<jats:italic>x</jats:italic></jats:sub>)C(N,O) structure (where <jats:italic>x</jats:italic> = 0.2, 0.7) with localized nanocrystalline transition metal carbides (TMCs). Subsequent application of the field‐assisted sintering technique (FAST) for high‐temperature consolidation results in a crystalline (Hf<jats:sub><jats:italic>x</jats:italic></jats:sub>Ta<jats:sub>1−<jats:italic>x</jats:italic></jats:sub>)C/SiC ultra‐high temperature ceramic nanocomposite. The microstructure contains powder particle‐sized grains and sinter necks between the former powder particles. The powder particles consist of a β‐SiC matrix and small TMCs. Large TMCs are observed on the internal surfaces of former powder particles. This is due to the pulsed direct current and the resulting Joule heating that facilitates diffusion as well as oxygen impurities. Sinter necks of large β‐SiC grains form during the FAST process. The microstructural regions are assessed using high‐throughput nanoindentation. The hardness for SiC/(Hf<jats:sub>0.7</jats:sub>Ta<jats:sub>0.3</jats:sub>)C is measured on the formed grains and the sinter necks giving mean hardness values of about 27 and 37 GPa, respectively.</jats:p>