A5082512030- Advanced materials and composites
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- Hydrogen embrittlement and corrosion behaviors in metals
- High-Temperature Coating Behaviors
- Nuclear Materials and Properties
- High Entropy Alloys Studies
- Corrosion Behavior and Inhibition
- Welding Techniques and Residual Stresses
- Fusion materials and technologies
- Advanced Surface Polishing Techniques
- MXene and MAX Phase Materials
- Metallurgy and Material Science
- High Temperature Alloys and Creep
- Additive Manufacturing Materials and Processes
- Electrodeposition and Electroless Coatings
- Tunneling and Rock Mechanics
- Aluminum Alloy Microstructure Properties
- Magnesium Alloys: Properties and Applications
- Semiconductor materials and devices
Zhejiang University of Technology
2019-2024
City University of Hong Kong
2023
Harbin Institute of Technology
2016-2020
State Key Laboratory of Advanced Welding and Joining
2016
The Co-Cr-Fe-Ni high-entropy alloy (HEA) is particularly suitable for preparing coatings due to its excellent comprehensive properties. In this study, we use the laser cladding method prepare HEA with cable-type welding wire (CTWW) as filling material and investigated dilution rates of by experimental studies first-principles calculations. rate reduced about 50% changing feeding speed, a coating near nominal composition was prepared multi-layer cladding. successfully in fourth layer dense...
Micro-arc oxidation (MAO) is performed on Ti-6Al-4V electron-beam-welded joints, and the microstructure, phase composition, corrosion resistance of joint surface coating are investigated systematically by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), diffraction (XRD), as well electrochemical stress analyses. SEM analyses revealed that undergoes a transformation. The morphology base materials similar, but denser thicker. XRD recognize rutile anatase phases...
Pulse-enhanced vacuum arc evaporation (PEVAE) which combines pulsed and direct current operation of the source is a new method in cathodic technology. One advantage to emit large amount electrons leading more ionization gas metal. In this work, microstructure, adhesion properties TiN coatings related substrate ion deposition energy Ebi at different nitrogen pressure were investigated. The experimental results revealed that compared DC mode during PEVAE process increased by 111 40.0% most...
Abstract Nitrogen (N)‐doped conductive silicon carbide (SiC) of various electrical resistivity grades can satisfy diverse requirements in engineering applications. To understand the mechanisms that determine N‐doped SiC ceramics during fast spark plasma sintering (SPS) process, were synthesized using SPS an N 2 atmosphere with powder and traditional Al O 3 –Y additive as raw materials at a temperature 1850–2000°C for 1–10 min. The was successfully varied over wide range 10 −3 –10 1 Ω cm by...
Compared to conventional direct current magnetron sputtering, high power impulse sputtering (HiPIMS) gives rise higher plasma activity which can be exploited deposit films with the preferred microstructure and critical load, but in practice, most of electrons are not effectively utilized lost anode (chamber wall). In order achieve ion flux substrate denser films, an external magnetic field is introduced. our HiPIMS system, a coil around target induces larger enhancement effects, increased by...
Hastelloy N alloy is an excellent oxidation and corrosion-resistant material, which selected as the shell material for main vessel of molten salt reactors (MSRs). In this work, we conducted double-sided gas tungsten arc welding (GTAW) on 4 mm thick plates to examine microstructure mechanical properties welded joints. The S-N curve was obtained by fatigue test. experimental results show that cracks initiate along weld toe propagate inward in a fan-shaped pattern. hardness highest...
Pulse-enhanced vacuum arc evaporation (PEVAE) is promising in surface engineering and produces coatings with better structure properties. In PEVAE, the target-to-substrate distance (Dt-s) affects substrate ion current bombardment energy which closely related to properties of coatings. this work, TiN are deposited on high-speed steel (HSS) silicon plates by traditional DC mode PEVAE at various Dt-s current, microstructure, morphology, mechanical properties, corrosion resistance evaluated. The...
A series of engineering application studies related to hydrogen damage has been carried out for the eutectic high-entropy alloy (HEA) AlCoCrFeNi2.1 with excellent comprehensive properties. This work mainly introduces element segregation and microstructure evolution phenomenon near surface phase boundary around precipitated found in experiment material. Studies have shown that near-surface HEAs caused by charging a great influence on trap density inside alloy. The "self-resistance effect" is...
In order to improve the hardness of copper surface, reduce its friction coefficient, and adjust overall performance coating, a TiB2/Cu composite coating with multilayer structure was prepared by electrodeposition. The microstructure analyzed SEM XRD. microhardness characteristics were tested, differences in microstructures properties different structures analyzed. Microstructure coatings two layers (Cu + TiB2/Cu) three Cu) on substrate TiB2 particles reduced deposition rate...
Micro-arc oxidation (MAO) is very effective to enhance the corrosion performance of Mg alloys. However, micro-pores in MAO coatings provide a channel for medium reach alloy matrix. In this work, electron beam strengthening (EBS) performed improve microstructure and coating prepared subsequently performance. The crystalline size decreases, roughness improves, resistance increases. Furthermore, refinement grain by EBS improves discharge MAO. noticeable effect on lies improvement density, such...
Nitrogen (N)-doped conductive silicon carbide (SiC) of various electrical resistivity grades can satisfy diverse requirements in engineering applications. To understand the mechanisms that determine N-doped SiC ceramics during spark plasma sintering (SPS) process, were synthesized using SPS N2 atmosphere with powder and Al2O3 -Y2O3 additive as raw materials at temperature 1850-2000 °C for 1-10 min. The was successfully varied over a wide range 10-3 -101 Ω·cm by modifying conditions. SPS-SiC...