Notice on the organization of advanced research class on high-pressure science and new materials of engineering knowledge of professional and technical personnel Notice on the organization of advanced research class on high-pressure science and new materials of engineering knowledge of professional and technical personnel

2008 Vol. 22, No. 1

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In-Situ High-Pressure X-Ray Diffraction of Natural Beryl
QIN Shan, LIU Jing, LI Hai-Jian, ZHU Xiang-Ping, LI Xiao-Dong
2008, 22(1): 1-5 . doi: 10.11858/gywlxb.2008.01.001
PDF (982)
Abstract:
At room temperature, in situ high-pressure energy dispersive X-ray diffraction (EDXD) inspections on beryl has been carried out using diamond anvil cell (DAC) device with synchrotron radiation source. The maximal pressure in the experiment is 19.2 GPa. In the range of experimental pressure, no evide...
Studies on the Distribution of Breakdown Liquid Particle Size under Explosive Detonation
HU Dong, HAN Zhao-Yuan, ZHANG Shou-Qi, ZHAO Yu-Hua, WANG Bing-Ren, CHEN Jun, SUN Zhu-Mei, CAI Qing-Jun, YAO Jiu-Cheng, DONG Shi
2008, 22(1): 6-10 . doi: 10.11858/gywlxb.2008.01.002
PDF (1103)
Abstract:
It is important to study liquid particle size in the dispersion in civil and military affairs range. Up to now it is the first time for the liquid particle size in the dispersion to be measured in our country using laser scattering apparatus, under explosive detonation. Based on the analysis on the ...
Synthesis of Monodisperse CdSe Nanocrystals: Nucleation and Growth
DAI Quan-Qin, WANG Ying-Nan, LI Dong-Mei, CHEN Hai-Yong, KAN Shi-Hai, ZOU Bo, SONG Yan-Li, GAO Shi-Yong, NIE Yan-Guang, LU Hong-Liang, et al.
2008, 22(1): 11-14 . doi: 10.11858/gywlxb.2008.01.003
PDF (913)
Abstract:
With trioctylphosphine and oleic acid as the ligands of Se and Cd, high-quality CdSe nanocrystals with controlled particle size were synthesized in a 260～300 ℃ noncoordinating solvent octadecene under argon flow. The as-synthesized nanocrystals are monodisperse without any size-selective treatment, ...
Synthesis and Properties of TiN/TiB2 Composite Materials
DING Zhan-Hui, YAO Bin, MA Hong-An, ZHENG You-Jin, QIU Li-Xia, JIA Xiao-Peng, WANG De-Yong
2008, 22(1): 15-18 . doi: 10.11858/gywlxb.2008.01.004
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Abstract:
Planetary milling and subsequent high-pressure high temperature treatment fabricated TiN/TiB2 composite materials. The structure developments of the materials were monitored by X-Ray diffraction and Raman spectrum. The mechanisms of ball milling and high-pressure high temperature treatment were rese...
A Numerical Analysis of the Influence of Buffer Material on Tantalum Flier Plate Velocity in the Hypervelocity Launcher
BAI Jing-Song, SHEN Qiang, TANG Mi, HU Jian-Bo, LUO Guo-Qiang, TAN Hua, ZHANG Lian-Meng
2008, 22(1): 19-24 . doi: 10.11858/gywlxb.2008.01.005
PDF (896)
Abstract:
Buffer material plays an important role in the hypervelocity launching experiments. By using numerical calculations, the influence of TPX buffer material's thickness on high impedance tantalum flier plate's velocity is analyzed, and the optimal thickness of buffer material is also evaluated. For thi...
Electrical Conductivity Measurement of -Boron under High Temperature and High Pressure
ZHANG Dong-Mei, GAO Chun-Xiao, HUANG Xiao-Wei, LI Ming, HE Chun-Yuan, HAO Ai-Min, YU Cui-Ling, CUI Xiao-Yan, LI Yan-Chun
2008, 22(1): 25-29 . doi: 10.11858/gywlxb.2008.01.006
PDF (861)
Abstract:
Boron possesses very complex structures and various physical characteristics under high pressure, which always attracts much attention in the field of theory and experiment. In situ electrical conductivity measurement under variable pressure and temperature conditions is a very important research in...
Shock Wave Compression of PZT 95/5 Ferroelectric Ceramic
LIU Gao-Min, DU Jin-Mei, LIU Yu-Sheng, TAN Hua, HE Hong-Liang
2008, 22(1): 30-34 . doi: 10.11858/gywlxb.2008.01.007
PDF (1010)
Abstract:
Reverse-impact experiments were conducted on a gas-gun facility to determine the poled and unpoled PZT 95/5 ceramic Hugoniot states. Instrumented VISAR recorded the u-t profile at the interface between the buffer and window. Comparisons between the obtained results and reference data indicated that ...
Synthesis and Characterization of Two-Dimensional Rh-C60 Polymer
WANG Su-Qin, GU Min
2008, 22(1): 35-38 . doi: 10.11858/gywlxb.2008.01.008
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Abstract:
A rhombohedral two-dimensional (2D-Rh) C60 polymer has been successfully synthesized by cubic press methods under the conditions of 6 GPa and 700 ℃. X-ray diffraction (XRD) and nuclear magenatic resonance (NMR) were performed to characterize the samples. XRD spectrum indicates that the C60 polymer i...
Electrical Property and Phase Transition of CdSe under High Pressure
HE Chun-Yuan, GAO Chun-Xiao, LI Ming, HAO Ai-Min, HUANG Xiao-Wei, YU Cui-Ling, ZHANG Dong-Mei, WANG Yue, ZOU Guang-Tian
2008, 22(1): 39-42 . doi: 10.11858/gywlxb.2008.01.009
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Abstract:
The electrical resistivity of powdered CdSe has been measured at 300～450 K and pressure up to 23 GPa using fabricating microcircuit on a diamond anvil. It is found that during loading the pressure dependence of the electrical resistivity shows anomaly at about 2.6 GPa, corresponding to the structure...
Electrical Conductivity Evidence for Phase Transitions of FeS under High Temperature and High Pressure
LI Ming, GAO Chun-Xiao, ZHANG Dong-Mei, HAO Ai-Min, HE Chun-Yuan, HUANG Xiao-Wei, YU Cui-Ling, ZOU Guang-Tian
2008, 22(1): 43-47 . doi: 10.11858/gywlxb.2008.01.010
PDF (862)
Abstract:
The electrical properties of stoichiometric iron sulfide (FeS) were investigated under high pressure with a designed diamond anvil cell (DAC). The process of phase transition was reflected on the discontinuity of electrical conductivity changing with high pressure. The conductivity of FeS with NiAs ...
Instantaneous Void between Thermo-Baric Charge and Warhead Shell under Launching
ZHANG Qi, CUI Jun-Mei, JI Yan-Hua, WEI Ke-Zhen, DANG Hai-Yan, QIN Bin
2008, 22(1): 48-52 . doi: 10.11858/gywlxb.2008.01.011
PDF (924)
Abstract:
The safety theory on the warhead under launching is a interesting subject in the weapon science. The stress state in the charge medium of a warhead under launching is a key question to be studied. It is very difficult to measure local stress in a warhead under launching. There have not been any bett...
Melting Property of Mo at High Pressure from Molecular Dynamics Simulation
ZHANG Gong-Mu, LIU Hai-Feng, DUAN Su-Qing
2008, 22(1): 53-56 . doi: 10.11858/gywlxb.2008.01.012
PDF (908)
Abstract:
Ab initio calculations are performed on Mo to investigate the structure at zero Kelvin, indicating that Mo is stable in a bcc phase up to the pressure of at least 500 GPa. Ab initio molecular dynamics simulations are also performed on Mo to reveal the melting property under high pressure. An NVT (N,...
The Microstructure and Thermal Performance of Phenolic Resin (PF)/Rectorite (REC) Nanocomposites Produced by High Pressure Method
LI Ming-Fa, FAN Duan, SUN Zhen-Ya, TIAN Xu, CHEN Li-Ying, YE Xian-Xian
2008, 22(1): 57-61 . doi: 10.11858/gywlxb.2008.01.013
PDF (811)
Abstract:
High pressure method was used to produce phenolic resin (PF)/rectorite (REC) nanocomposites. The microstructure and thermal performance of the nanocomposites was studied by X-ray diffraction (XRD), transmission electron microscope (TEM), and thermal analysis. The experimental results show that exfoi...
Experimental Studies on Shock Properties of H2O-C6H6-C35H64O11 (OP-10)
SUN Yue, SUN Dong, SHUAI Jun-Qing, WU Guo-Dong, SHI Shang-Chun
2008, 22(1): 62-66 . doi: 10.11858/gywlxb.2008.01.014
PDF (775)
Abstract:
A series of dynamic loading experiments have been successfully conducted for liquid H2O-C6H6-C35H64O11 (OP-10) mixture of which the voluminal proportion is 10∶10∶1 on a two-stage light gas gun, and 10 Hugoniot data in pressure range from 3.75~57.87 GPa are obtained. The linear regression for these e...
Study on Raman Spectrum of Synthesized cBN Crystal Block
CHEN Li-Xue, ZHU Pin-Wen, MA Hong-An, GUO Wei-Li, CHEN Hong-Liang, SONG Yan-Li, JIA Xiao-Peng, ZOU Guang-Tian
2008, 22(1): 67-71 . doi: 10.11858/gywlxb.2008.01.015
PDF (950)
Abstract:
cBN crystals, hBN and catalyst were used as raw material, to synthesize cBN crystal block, and the synthesized cBN crystal block was characterized using confocal Raman spectroscopy. Raman spectra show that Raman peak positions, 1.088 cm-1 and 1.368 cm-1, might be induced by a new phase of BN which i...
An Eulerian Adaptive Mesh Refinement Method for Three Dimensional Elastic-Plastic Hydrodynamic Simulations
LIU Jun, HE Chang-Jiang, LIANG Xian-Hong
2008, 22(1): 72-78 . doi: 10.11858/gywlxb.2008.01.016
PDF (915)
Abstract:
Based on three dimensional elastic-plastic program MEPH3D, we design a three dimensional multi-component block-structured AMR program and solve many important problems which are encountered in combining blockstructured AMR with the uniform-grid program MEPH3D, such as the rule of refinement and der...
Measurements in Planar Shock Wave Experiments for OFHC Using Manganin Gauges
FAN Chun-Lei, HU Jin-Wei, CHEN Da-Nian, WANG Huan-Ran, XIE Shu-Gang
2008, 22(1): 79-84 . doi: 10.11858/gywlxb.2008.01.017
PDF (815)
Abstract:
The typical spall signals are obtained in planar shock wave experiments of oxygen-free high-conductivity copper (OFHC) using manganin gauges. The yield stresses of OFHC under planar shock loading are also obtained from longitudinal and transverse stresses recorded by manganin gauges. The experimenta...
Possible Existence of Ultra Fast Polarity Diffusion Process of ZnO under High Pressure
ZHAN Xiao-Hong, CAO Da-Hu, LU Zhong, DING Hui-Hui
2008, 22(1): 85-88 . doi: 10.11858/gywlxb.2008.01.018
PDF (1022)
Abstract:
The effects of heating temperature and duration time on the process of ZnO crystallization under the pressure of 5 GPa are studied systemically by the methods of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The experimental results show that the diffusion rate of ZnO increases gre...
Shock Induced Phase Transition of Pure Iron and Fe-Based Alloy Cuneal Samples
YU Jin-Quan, TANG Xiao-Jun, YUAN Shuai, HU Hai-Bo
2008, 22(1): 89-94 . doi: 10.11858/gywlxb.2008.01.019
PDF (679)
Abstract:
Planar detonation wave was generated to load the DT2 iron and HR2 steel cuneal sample by detonating TNT. Macroscopical crack perpendicular or 45 angle to the load interface was found in recovered HR2 steel sample and irregular fracture at back surface was found in recovered DT2 iron sample. Metallog...
The High Pressure Synthesis and Situ High Pressure Structural Stability of Ba2CuO2Cl2
LIU Qing-Qing, WANG Fu-Ren, LI Feng-Ying, CHEN Liang-Chen, YU Ri-Cheng, JIN Chang-Qing, LI Yan-Chun, LIU Jing
2008, 22(1): 95-98 . doi: 10.11858/gywlxb.2008.01.020
PDF (775)
Abstract:
Ba2CuO2Cl2 was synthesized under high pressure. The crystal structure stability of Ba2CuO2Cl2 was investigated under high pressure. It shows that Ba2CuO2Cl2 is stable in the studied pressure range but with a relative large anisotropic compressibility.
A High Frequency Hydrostatic Pressure Dielectricity Measuring System Based on Cubic Anvil Apparatus
LU Zhong, ZHAN Xiao-Hong, CAO Da-Hu, ZHANG Liang-Ying, YAO Xi
2008, 22(1): 99-102 . doi: 10.11858/gywlxb.2008.01.021
PDF (836)
Abstract:
By a self-made system based on a cubic anvil high-pressure apparatus and an Agilent 4294A accurate impedance analyzer, real time high frequency dielectricity measurement under hydrostatic pressure is realized by the standard four-wire method widely used in ambient pressure dielectric research. The s...
Experimental Research on the Characters of Laser-Driven Macro-Flyers
GU Zhuo-Wei, ZHANG Xing-Wei, SUN Cheng-Wei
2008, 22(1): 103-107 . doi: 10.11858/gywlxb.2008.01.022
PDF (812)
Abstract:
One-dimensional shock loading on the material can be realized using the technique of laser-driven macro-flyer plate and is of applications to the research of high pressure equation of state (EOS) and dynamics under high strain rate. A table-sized pulse Nd:YAG laser was used to drive macro-flyer in t...
The Preliminary Study of Improving DAVIS Gun Launching Capability
DUAN Ji-Yuan, WANG Yan-Ping, LIU Cang-Li, YU Chuan
2008, 22(1): 108-112 . doi: 10.11858/gywlxb.2008.01.023
PDF (783)
Abstract:
Aimed at idiographic conditions of launching target in excess of launching capability in DAVIS gun experiments, two ways of improving DAVIS gun launching capability for enhancing efficiency and exerting function of DAVIS gun, and the interior ballistic performance was assessed. The ballistic analysi...

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