A5018573033- Advanced Materials Characterization Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- Fusion materials and technologies
- Metal and Thin Film Mechanics
- Titanium Alloys Microstructure and Properties
- Nuclear reactor physics and engineering
- Intermetallics and Advanced Alloy Properties
- High Temperature Alloys and Creep
- Advanced materials and composites
- Additive Manufacturing Materials and Processes
- Radioactive element chemistry and processing
- Ion-surface interactions and analysis
- Nuclear Physics and Applications
- Covalent Organic Framework Applications
- Microstructure and mechanical properties
- Quantum and electron transport phenomena
- Microstructure and Mechanical Properties of Steels
- Surface Treatment and Residual Stress
- Mercury impact and mitigation studies
- Composite Material Mechanics
- Metallurgy and Cultural Artifacts
- Mechanical Failure Analysis and Simulation
- Industrial Vision Systems and Defect Detection
- Electron and X-Ray Spectroscopy Techniques
CAS Key Laboratory of Urban Pollutant Conversion
2024
University of Science and Technology Beijing
2024
Max-Planck-Institut für Nachhaltige Materialien
2017-2023
China Academy of Engineering Physics
2011-2023
Max Planck Society
2017-2020
Abstract Hydrogen pick-up leading to hydride formation is often observed in commercially pure Ti (CP-Ti) and Ti-based alloys prepared for microscopic observation by conventional methods, such as electro-polishing room temperature focused ion beam (FIB) milling. Here, we demonstrate that cryogenic FIB milling can effectively prevent undesired hydrogen pick-up. Specimens of CP-Ti a dual-phase alloy (Ti-6Al-2Sn-4Zr-6Mo, Ti6246, wt.%) were using xenon-plasma microscope equipped with stage...
We present sample transfer instrumentation and integrated protocols for the preparation atom probe characterization of environmentally-sensitive materials. Ultra-high vacuum cryogenic suitcases allow specimen between preparation, processing several imaging platforms without exposure to atmospheric contamination. For expedient transfers, we installed a fast-docking station equipped with pump upon three systems; two probes, scanning electron microscope / Xe-plasma focused ion beam...
Analysis and understanding of the role hydrogen in metals is a significant challenge for future materials science, this clear objective recent work atom probe tomography (APT) community. Isotopic marking by deuteration has often been proposed as preferred route to enable quantification APT. Zircaloy-4 was charged electrochemically with deuterium under same conditions form large hydrides deuterides. Our results from Zr hydride deuteride highlight challenges associated accurate deuterium,...
Abstract
Abstract Atom probe tomography (APT) has been increasingly used to investigate hydrogen embrittlement in metals due its unique capacity for direct imaging of H atoms interacting with microstructural features. The quantitativeness measurements by APT is yet be established views erroneous compositional bulk hydrides and the influence spurious hydrogen, e.g. residual gas inside analysis chamber. Here, we analyzed titanium deuteride (approx. 65.0 at%–66.6 at% D) lieu hydride minimize overlap...
A method combining surfactant-assisted synthesis and laminar assembly polymerization is employed to fabricate a 2D Sc 2 O 3 /COF composite film at ambient temperature pressure, achieving lateral infinitude, uniformity, high mechanical strength.
We present sample transfer instrumentation and integrated protocols for the preparation correlative characterization of environmentally-sensitive materials by both atom probe tomography electron microscopy. Ultra-high vacuum cryogenic suitcases allow specimen between preparation, processing several imaging platforms without exposure to atmospheric contamination. For expedient transfers, we installed a fast-docking station equipped with pump upon three systems; two probes, scanning microscope...
The alpha/beta interface in Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) is investigated via centre of symmetry analysis, both as-grown and after 10% cold work. Semi-coherent steps are observed at a spacing 4.5 +/-1.13 atoms the condition, good agreement with theory prediction (4.37 atoms). Lattice accommodation observed, elongation along [-1 2 -1 0]alpha contraction [1 0 . Deformed alpha exhibited larger, less coherent slip bands lying {110}beta. This indicates dislocation pile-up grain boundary, precursor...
Novel SnS2/SnS heterogeneous composites have been prepared successfully through a one-pot chemical approach by annealing SnO2 nanoparticles in H2S gas at 300 C for different time. The structure and composition of as-prepared characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM), photoelectron spectroscopy (XPS) ultraviolet-visible spectrophotometer (UV-Vis), respectively. Interestingly, the obtained hold layered heterojunction with high absorption...
Surface rolling extrusion processing is applied to reconstruct the microstructure of U–5.7Nb alloy. A micro–nano structure layer formed on surface, at same time inclusions in surface are also refined and uniformity niobium element distribution improved. The corrosion resistance test indicates that, rate material accelerated, but stability oxide film alloy after better. modified with uniform by can eliminate uneven potential turning, thereby improves local
To efficiently confine the gaseous deuterium and tritium, which are important fuels in development of fusion energies, China has developed a series hydrogen resistant stainless steels, named as HR steels. The mechanisms interactions between tritium with decayed helium-3 these steels were investigated by theoretical calculations, experimental observations or tests through loading into years storage. Results showed that made had good performance to resist damage embrittlement. They ideal...