A5101478016- Advanced ceramic materials synthesis
- Advanced materials and composites
- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Boron and Carbon Nanomaterials Research
- High-pressure geophysics and materials
- MXene and MAX Phase Materials
- Microwave Dielectric Ceramics Synthesis
- Nuclear materials and radiation effects
- Metallic Glasses and Amorphous Alloys
- Ferroelectric and Piezoelectric Materials
- Tunneling and Rock Mechanics
- Phase-change materials and chalcogenides
- Inorganic Chemistry and Materials
- Drilling and Well Engineering
- Solidification and crystal growth phenomena
- Intermetallics and Advanced Alloy Properties
- nanoparticles nucleation surface interactions
- Thermal Expansion and Ionic Conductivity
- Graphene research and applications
- Luminescence Properties of Advanced Materials
- Multiferroics and related materials
- Powder Metallurgy Techniques and Materials
- Semiconductor materials and devices
- Ion-surface interactions and analysis
Sichuan University
2015-2025
China Power Engineering Consulting Group (China)
2025
Hangzhou Dianzi University
2024
Institute of Molecular Medicine
2020-2023
Saudi Aramco (Saudi Arabia)
2021
Los Alamos National Laboratory
2002-2014
Yanshan University
2007
Institute of Physics
1997-2002
National Institute for Materials Science
2001
Chinese Academy of Sciences
1999
The Vickers hardness of boron suboxide single crystals was measured using a diamond indentation method. Under loading force 0.98 N, our test gave an average 45 GPa. fracture toughness as 4.5 MPa m1/2. We also the cubic nitride and sapphire for comparison. found to be very close that under same force. Our results suggest could new superhard material industrial applications, surpassed in only by nitride.
Abstract Hardness is an important indicator of the wear resistance tool materials. The study effect hardness on materials has significant practical applications. In this experimental work, a series polycrystalline cubic boron nitride (PcBN) and diamond (PCD) compacts with different are sintered under high temperature pressure, these samples were fashioned into turning tools, used for edge testing in granite process. Based measurements above, relationship between two identical grain sizes...
Nanocrystallization of Zr41Ti14Cu12.5Ni9Be22.5C1 bulk metallic glass (BMG) under high pressure is investigated. It found that the nanocrystallization assisted, and primary temperature decreases as applied increases. Pressure annealing BMG in supercooled liquid region produces a composite with dispersion very fine nanocrystallites amorphous matrix. A fully obtained by 6 GPa at 723 K. The also controls phase selection during crystallization. mechanism for pressure-assisted discussed.
We report experimental results of phase stability and incompressibility CrN. The obtained bulk moduli for cubic orthorhombic CrN are 257 262 GPa, respectively. These invalidate the conclusion phase-transition-induced elastic softening recently reported based on nonmagnetic simulations [Nature Mater. 8, 947 (2009)]. On other hand, they provide only evidence to support computational models involving local magnetic moment Cr atoms 9, 283 (2010)], indicating that atomic spin has a profound...
Polycrystalline cubic boron nitride (PcBN) has been synthesized at 14 GPa and high temperatures of 1300–2000 °C in a two-stage multi-anvil cell. Sintered PcBN 1700–1800 with grain size ∼200 nm is optically transparent transmittance ∼70% wavelengths 400–1500 the Vickers hardness ∼63–69 GPa. Analyses scanning transmission electron microscopy reveal that can be strengthened by introducing nanometer-scale grains microscopic defects pressure temperature. The optical transparency bulk temperature...
Abstract In natural rock masses, small closed micro‐cracks ranging from centimeters to decimeters in length are commonly developed. Under engineering disturbances, the local stress at tips of these cracks increases sharply, leading generation and propagation new cracks, eventually causing macroscopic damage, which significantly affects stability safety projects. Taking Emeishan basalt southwest region as an example, this study utilized CT scanning 3D reconstruction software construct a...
Abstract This study investigates the thermal insulation performance of CeO 2 and Y O 3 co‐doped ZrO solid solutions cerium‐yttria stabilized zirconia (CYZ), prepared via solid‐state reaction method. A comparative assessment was conducted between CYZ ‐ZrO yttria‐stabilized (YSZ) under 10 GPa pressure conditions. The results reveal that temperature change efficiency is significantly enhanced, compared to YSZ. Under equivalent heating power conditions, maximum differential within cavity for...
A one-step sintering process is developed to prepare nanostructured super-hard B6O?B4C compacts (see figure) from a mixture of B, B2O3, and B4C precursors at mild pressure ∼3GPa high temperatures ranging 1500–1900 K. The sintered B6O–B4C exhibit hardness values comparable commercially available polycrystalline BN are used for the high-speed cutting hardened steel.
Low (α)- and high-temperature (β) forms of BiTaO4 have attracted much attention due to their dielectric photocatalytic properties. In the present work, a third form, so-called HP-BiTaO4, was synthesized at high temperature pressure. The phase evolution, transformations, properties α- β-BiTaO4 HP-BiTaO4 ceramics are studied in detail. densified 1300 °C with microwave permittivity εr ≈ 53, quality factor Qf 12070 GHz, coefficient resonant frequency τf -200 ppm/°C. were 5 GPa followed by...