A5016959836- Advanced materials and composites
- Fusion materials and technologies
- Metal and Thin Film Mechanics
- Shape Memory Alloy Transformations
- Nuclear Materials and Properties
- Advanced ceramic materials synthesis
- Microstructure and Mechanical Properties of Steels
- High-Temperature Coating Behaviors
- High Temperature Alloys and Creep
- Ga2O3 and related materials
- Magnetic Properties and Applications
- GaN-based semiconductor devices and materials
- Aluminum Alloys Composites Properties
- Laser and Thermal Forming Techniques
- Metallurgical Processes and Thermodynamics
- Nanowire Synthesis and Applications
- Intermetallics and Advanced Alloy Properties
- Microstructure and mechanical properties
- Hydrogels: synthesis, properties, applications
- Catalytic Processes in Materials Science
- Calcium Carbonate Crystallization and Inhibition
- Advancements in Transdermal Drug Delivery
- Soft Robotics and Applications
- Fuel Cells and Related Materials
- ZnO doping and properties
Yunnan University
2024
Tianjin University
2011-2023
Shanghai Jiao Tong University
2008
Abstract With excellent creep resistance, good high-temperature microstructural stability and irradiation oxide dispersion strengthened (ODS) alloys are a class of important that promising for applications. However, plagued by nerve-wracking fact the particles tend to aggregate at grain boundary metal matrix, their improvement effect on mechanical properties matrix tends be limited. In this work, we employ unique in-house synthesized oxide@W core-shell nanopowder as precursor prepare W-based...
Oxide dispersion strengthened tungsten (ODS-W) alloy was prepared by chemical method, conventional sintering and hot-rolling which breaks through the research bottleneck of preparing alloys with excellent comprehensive mechanical properties. More specifically, it can exhibit ultrahigh strength superior toughness when tested at 200°C. In addition, nil ductility temperature (NDT) also dramatically decrease to 100–150°C. The bimodal structure formed uneven distribution yttria lamellar hot...
In this work, the effect of Y2O3 addition on grain growth and densification W matrix was explored from a kinetic perspective by comparing low temperature sintering behavior W-Y2O3 composite nanopowder system with that pure system. By combining nonisothermal experiment power law growth, it found boundary diffusion is responsible for mass transport mechanism in both systems. The inhibition after closely related to lower surface diffusivity skeleton. rate skeleton these two systems were...
Chemical methods have significant advantages in preparing high-performance oxide dispersion-strengthened alloys.
With the aim of preparing high performance oxide-dispersion-strengthened tungsten based alloys by powder metallurgy, W-Y2O3 composite nanopowder precursor was fabricated an improved wet chemical method with anion surfactant sodium dodecyl sulfate (SDS) addition. It is found that employment SDS can dramatically decrease W grain size (about 40 nm) and improve uniformity. What's more, addition also remarkably uniform dispersion Y2O3 particles during synthesis process. For alloy whose...
In order to prepare high performance oxide-dispersion-strengthened tungsten-based alloys, W–Y<sub>2</sub>O<sub>3</sub> composite nanopowders were prepared using an improved hydrothermal synthesis method with the addition of surfactant polyvinyl pyrrolidone (PVP).
Tungsten (W), as a promising plasma-facing material for fusion nuclear reactors, exhibits ductility reduction. Introducing high-density coherent nano-dispersoids into the W matrix is highly efficient strategy to break tradeoff of strength-ductility performance. In this work, we performed helium (He) ion irradiation on oxide-dispersoids strengthened (ODS) investigate effect nanoparticle interfaces behavior He bubbles. The results show that diameter and density bubbles in ODS are close at low...
As a representative type of high Cr ferritic heat-resistant steels, T91 steels (ASME SA-213 T91/P91) has been recognized as the preferable materials and widely used in high-temperature structural components such header main steam pipe advanced power plants. For service condition is tempered martensites, its corresponding microstructure mechanical performance are mainly adjusted by tempering treatment. After exploring size number MX M 23 C 6 precipitating particles width martensitic lath...
Global changes and drug abuse are forcing humanity to face various disease problems, alternative therapies with safe natural substances have important research value. This paper combines techniques in quantum chemical calculations molecular simulations provide molecular-level insight into the dynamics of self-assembly N-isopropylacrylamide (NIPAM) for loading curcumin (CUR). The results indicate that increasing chain length NIPAM molecules reduces their efficiency encapsulating locking CUR,...