A5101594638- Metal and Thin Film Mechanics
- Advanced materials and composites
- Diamond and Carbon-based Materials Research
- Advanced ceramic materials synthesis
- MXene and MAX Phase Materials
- Aluminum Alloys Composites Properties
- Heat Transfer and Boiling Studies
- Boron and Carbon Nanomaterials Research
- Heat Transfer and Optimization
- High Entropy Alloys Studies
- Engineering Applied Research
- Lubricants and Their Additives
- Laser Material Processing Techniques
- Semiconductor materials and devices
- High-Temperature Coating Behaviors
- Adhesion, Friction, and Surface Interactions
- Integrated Circuits and Semiconductor Failure Analysis
- Energy and Environmental Systems
- Orbital Angular Momentum in Optics
- Optical Coatings and Gratings
- Tribology and Lubrication Engineering
- Near-Field Optical Microscopy
- Fluid Dynamics and Thin Films
- Nonlinear Optical Materials Studies
- Spectroscopy and Laser Applications
Jilin University
2014-2024
First Affiliated Hospital of Harbin Medical University
2024
Harbin Medical University
2024
State Key Laboratory of Superhard Materials
2014-2023
Jilin Medical University
2015-2017
Cheng Shiu University
2006-2014
Paracrystalline state achieved in the diamond system guides a direction to explore missing link between amorphous and crystalline states. However, such is still challenging reach alloy systems controlled manner. Here, based on vast composition space complex atomic interactions high-entropy alloys (HEAs), we present an "atomic-level tailoring" strategy create paracrystalline HEA. The addition of atomic-level Pt with large negative mixing enthalpy induces local reshuffling around atoms for...
Boron carbide (B4C) coating on diamond particle is synthesized by heating particles in a powder mix of H3BO3 and B Ar atmosphere. The composition, bond state coverage fraction boron are investigated. favors to grow (100) surface rather than (111) surface. Cu matrix composites reinforced with B4C-coated were made metallurgy. addition B4C gave rise dense composite. influence both tensile strength thermal conductivity the composite When fully covered particles, exhibited greatly increase (115...
Grain boundary engineering is a versatile tool for strengthening materials by tuning the composition and bonding structure at interface of neighboring crystallites, this method holds special significance composed small nanograins where ultimate strength dominated grain instead dislocation motion. Here, we report large nanocolumnar copper film that comprises columnar embedded in bamboo-like boron framework synthesized magnetron sputtering co-deposition, reaching high nanoindentation hardness...
The well-known integration of physical, chemical, and mechanical properties enables high-entropy alloys (HEAs) to be applied in various fields; however, refractory HEAs are brittle susceptible abrasive wear at high coefficients friction (COF), resulting insufficient durability against abrasion. Herein, curved MoS2 nanosheets periodically introduced into the TiNbMoTaCr film for triggering self-assembly mixed metal oxides @MoS2 nanoscrolls, which contain hard cores low-shearing lubricant...
Femtosecond laser additive manufacturing based on two-photon polymerization performs a useful technique for fabricating high-precision 3D structures. However, poor mechanical strength and low processing efficiency brought by near threshold to achieve high accuracy are still urgent problems. In this work, definition-reinforcement-solidification (DRS) strategy is proposed solve the current problems, in which DRS includes three steps: utilize near-threshold femtosecond accurately define surface...
Tungsten carbide thin films were deposited on silicon (100) substrates by DC reactive magnetron sputtering using CH 4 as a carbon source. The microstructure, compressive stress, hardness and tribological behaviors showed great dependences the rates of flow ( F CH4 ). Increasing from 2 to 5 sccm, film exhibited phase transition hexagonal-W C cubic-WC 1-x . Further increasing larger than 10sccm, presented amorphous state. As increased, Raman revealed that graphitization trend, meanwhile,...
The combined merits of high hardness and superior chemical inertness enable transition metal nitrides (TMNs) to be extensively coated onto the surfaces for avoiding erosion corrosion attacks. However, relatively large-size through-type diffusion channels commonly appear in corroded layers as TMNs coatings subjected corrosive environments. These can serve short-circuit-diffusion paths ions worsen corrosion-resistance ability, eventually, yielding unpredictable failure due heterogeneous growth...
This study investigated the effect of design parameters on pool boiling heat transfer sintered surfaces a tube. The experiments were conducted in saturated, deionized and degassed water. Data taken at an atmospherical pressure fixed flux 41,000 . In experimentation, effects sintering pressure, time, temperature, heating rate, particle size heat-transfer coefficient surface using Taguchi method, orthogonal array table was selected as experimental plan for some mentioned above. Based results...
Y 2 O 3 has a great application potential at reaction barrier coating of high-temperature composites due to its high thermodynamic stability and melting point, the phase structure temperature dependent mechanical property are key parameters for this application. thin films were deposited on silicon (100) wafers by DC magnetron sputtering with various oxygen partial pressure substrate bias, then vacuum annealing 1000°C was performed investigate stability. The microstructure, stress hardness...
Measurement and modeling of residual stresses in SiC fiber reinforced titanium matrix composites (SiC f /Ti) are still a challenge. Diffraction method etching can characterize the strains fiber, respectively. A In this work, /Ti samples with perpendicular parallel cross-sections to fibers have been fabricated, were measured by X-ray diffraction etching. The results showed that axial stress sample was larger than fibers, while calculated from consistent diffractions based on triaxle model,...