A5066645259- Shape Memory Alloy Transformations
- High Temperature Alloys and Creep
- Titanium Alloys Microstructure and Properties
- High Entropy Alloys Studies
- Intermetallics and Advanced Alloy Properties
- Microstructure and Mechanical Properties of Steels
- Advanced Materials Characterization Techniques
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- Aluminum Alloy Microstructure Properties
- Fatigue and fracture mechanics
- Nuclear Materials and Properties
- High-Temperature Coating Behaviors
- Magnetic and transport properties of perovskites and related materials
- Advanced materials and composites
- Ferroelectric and Piezoelectric Materials
- Metal Alloys Wear and Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Electrocatalysts for Energy Conversion
- Additive Manufacturing Materials and Processes
- Magnetic Properties and Applications
- Semiconductor materials and interfaces
- Bone Tissue Engineering Materials
- Advanced Memory and Neural Computing
- Copper-based nanomaterials and applications
Düsseldorf University Hospital
2025
Heinrich Heine University Düsseldorf
2025
Ruhr University Bochum
2014-2024
University Hospitals of the Ruhr-University of Bochum
2013
Chemnitz University of Technology
2010
Entwicklungszentrum für Schiffstechnik und Transportsysteme
2000-2001
It is demonstrated that amorphous cobalt boride (Co 2 B) prepared by the chemical reduction of CoCl using NaBH 4 an exceptionally efficient electrocatalyst for oxygen evolution reaction (OER) in alkaline electrolytes and simultaneously active catalyzing hydrogen (HER). The catalyst achieves a current density 10 mA cm −2 at 1.61 V on inert support 1.59 when impregnated with nitrogen‐doped graphene. Stable performance maintained least 60 h. optimized catalyst, Co B annealed 500 °C B‐500)...
In the present work, we show how conventional and advanced mechanical, chemical, microstructural methods can be used to characterize cast single crystal Ni‐base superalloy (SX) plates across multiple length scales. Two types of heterogeneities are important, associated with microstructure (dendrites (D) interdendritic (ID) regions – large scale heterogeneity) well‐known γ/γ′ (small heterogeneity). Using electron probe micro‐analysis (EPMA), that elements such as Re, Co, Cr partition...
Adv. Energy Mater. 2016, 6, 1502313 There is an error in the reference list PDF version of originally published article. References [8] and [9] were inadvertently merged during production are both incorrectly contained within [8]. These references correct as follows: Y. Jiao, Zheng, M. Jaroniec, S. Z. Qiao, Chem. Soc. Rev. 2015, 44, 2060. a) K. L. Nardi, N. Yang, C. F. Dickens, A. Strickler, Bent, 5, 1500412; b) Peng, D. Jia, Al-Enizi, Elzatahry, G. 1402031; c) Zhao, J. Masa, W. Xia,...
High entropy shape memory alloys (HESMAs) represent a relatively young class of functional materials. They show reversible martensitic phase transformation which allows to exploit effects at high temperatures. HESMAs ordered complex solid-solutions. Their temperature is B2 type, and various elements (e.g. Ni, Cu, Ti, Zr, Hf) occupy sites in specific sub-lattices. In the present work, we study processing properties HESMAs. We chemical complexity on solidification microstructures...
We present a facile route to fabricate nanoporous gold composites (NPGCs) through chemical dealloying of two phase Al–Au alloys comprising Al2Au and AlAu intermetallic compounds under free corrosion conditions. The microstructures the NPGCs were characterized using X-ray diffraction, scanning electron microscopy with energy dispersive analysis, transmission microscopy. separately proceeds, results in formation NPGCs. are composed intracellular intercellular areas which exhibit kinds...