A5037374299- Advanced ceramic materials synthesis
- Advanced materials and composites
- Metal and Thin Film Mechanics
- MXene and MAX Phase Materials
- Diamond and Carbon-based Materials Research
- High-Temperature Coating Behaviors
- Boron and Carbon Nanomaterials Research
- Intermetallics and Advanced Alloy Properties
- Aluminum Alloys Composites Properties
- Semiconductor materials and devices
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Adhesion, Friction, and Surface Interactions
- CO2 Reduction Techniques and Catalysts
- Gas Sensing Nanomaterials and Sensors
- Surface Roughness and Optical Measurements
- Thermodynamic and Structural Properties of Metals and Alloys
- High Entropy Alloys Studies
- Metallic Glasses and Amorphous Alloys
- Boron Compounds in Chemistry
- Liquid Crystal Research Advancements
- Mineral Processing and Grinding
- Nanoparticle-Based Drug Delivery
- Metallurgical and Alloy Processes
- Nanoporous metals and alloys
Huawei Technologies (France)
2025
South China University of Technology
2025
Jiangsu University
2025
Central South University
2015-2024
The University of Tokyo
2024
Xiangya Hospital Central South University
2024
Hunan University
2024
Chinese Academy of Sciences
2010-2023
Technical Institute of Physics and Chemistry
2023
University of Chinese Academy of Sciences
2023
Abstract Ultra-high temperature ceramics are desirable for applications in the hypersonic vehicle, rockets, re-entry spacecraft and defence sectors, but few materials can currently satisfy associated high ablation requirements. Here we design fabricate a carbide (Zr 0.8 Ti 0.2 C 0.74 B 0.26 ) coating by reactive melt infiltration pack cementation onto C/C composite. It displays superior resistance at temperatures from 2,000–3,000 °C, compared to existing ultra-high (for example, rate of...
Abstract Multi-component solid solutions with non-stoichiometric compositions are characteristics of ultra-high temperature carbides as promising materials for hypersonic vehicles. However, group IV transition-metal carbides, the oxidation behavior multi-component (Zr,Hf,Ti)C x carbide solution has not been clarified yet. The present work fabricated four kinds powders by free-pressureless spark plasma sintering to investigate in air. effects metallic atom composition on resistance were...
Abstract Multicomponent ultra-high temperature ceramics (UHTCs) are promising candidates for thermal protection materials (TPMs) used in aerospace field. However, finding out desirable compositions from an enormous number of possible remains challenging. Here, through elucidating the role preferential oxidation ablation behavior multicomponent UHTCs via thermodynamic analysis and experimental verification, correlation between composition performance was revealed aspect thermodynamics. We...
Enhancing the oxidation resistance of multicomponent carbides above 2000℃ is critical for their thermal protection applications. For this purpose, novel Nb- and Ta-doped (Hf,Zr,Ti)C were designed to improve at 2500℃. The results demonstrated that Nb Ta doping reduced rate constant by 16.67% 25.17%, respectively, thereby significantly improving (Hf,Zr,Ti)C. This enhancement was attributed changes in oxycarbide composition distribution within oxide layer adding Ta. Owing different tendencies...
Dense monolithic (Ti,Zr,Hf)C/SiC ceramic nanocomposites with four different molar ratios of metallic elements in the (Ti,Zr,Hf)C phase (i.e., Ti:Zr:Hf=1:1:1, 2:3:5, 2:3:3, and 1:2:1) were prepared upon pyrolysis novel (Ti,Zr,Hf)-containing single-source-precursors (SSPs), followed by spark plasma sintering. A thorough characterization was conducted to elucidate synthesis SSPs, polymer-to-ceramic transformation, chemical/phase compositions microstructure SiTiZrHfC-based ceramics. The results...
Hydroxyl radicals (•OH) generated in the photocatalytic process are crucial to conversion of methane (CH4) value-added methanol (CH3OH) at room temperature. However, utilizing noble metal-free catalysts and low-energy photons solar light, such as visible near-infrared light (vis–NIR), is difficult provide more electron states form •OH radicals. Here, we developed FeOOH/Li0.1WO3 core–shell nanorods via a two-step in/out co-modification hexagonal tungsten oxide (h-WO3): (1) lithium ions...
Multiphase design is a promising approach to achieve superior ablation resistance of multicomponent ultra-high temperature ceramic (UHTC), while understanding the mechanism foundation. Here, through investigating three-phase consisting Hf-rich carbide, Nb-rich and Zr-rich silicide phases, we report newly discovered solid-state reaction process among multiphase during ablation. It was found that this occurred in matrix/oxide scale interface region. In process, metal cations are...
ABSTRACT Early transition metal carbides are considered to be superior candidate materials for oxidizing environments at temperatures exceeding 2000°C. Generally, the remarkable oxidation resistance is largely attributed a carbonaceous oxide interlayer (eg, Hf–O–C, Zr–O–C, and Ta–O–C), located interface between external layer internal carbide HfC, ZrC, TaC), acting as primary oxygen barrier. However, barrier mechanism of remains unclear. Herein, through studying behavior novel multicomponent...