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

2009 Vol. 23, No. 4

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Structural Transition and Raman Scattering of ZnSe Nanoribbons under High Pressure
JIN En-Ji, YAO Li-De, WANG Fei-Fei, SHEN Xi, YOU Shu-Jie, YANG Liu-Xiang, JIANG Sheng, LI Yan-Chun, et al.  
2009, 23(4): 241-246 . doi: 10.11858/gywlxb.2009.04.001
PDF (841)
Abstract:
Structural stability of ZnSe nanoribbons was analyzed by means of high pressure in situ angular dispersive X-ray diffraction(ADXD). The pressure induced structural transition from the Zinc blende (ZB) to a rocksalt (RS) phase occurs at about 12.6 GPa, and at the transition point the relative volume ...
Fine Structure of Fe-Based Metal Film Interface and Diamond Single Crystal Growth
TIAN Bin, XU Bin, QI Yong-Xin, LI Mu-Sen, LI Li
2009, 23(4): 247-251 . doi: 10.11858/gywlxb.2009.04.002
PDF (530)
Abstract:
Field emission scanning electron microscope (FESEM) has been used to investigate the fine structure of Fe-based metal film interface and its crosssection. It is shown that nanoscale pyramid cone shapes are found on the metal film interface (100), serrate steps are found on the metal film interface ...
Effect of Tensile Stress on Exchange Bias in Ferromagnetic/Antiferromagnetic Bilayers
BAI Yu-Hao, YUN Guo-Hong, Narisu
2009, 23(4): 252-260 . doi: 10.11858/gywlxb.2009.04.003
PDF (709)
Abstract:
Based on the principle of minimal energy and Stoner-Wohlfarth model, the effect of the tensile stress on the exchange bias for ferromagnetic/antiferromagnetic bilayers has been investigated. When the applied field is absent, according to the relation between the energy of the system and the orientat...
Numerical Simulation of the Motion of Flyer Driven by Slab Explosive Initiated at Centered Point
JIANG Yang, SUN Cheng-Wei, LI Ping, BAI Jin-Song
2009, 23(4): 261-265 . doi: 10.11858/gywlxb.2009.04.004
PDF (815)
Abstract:
In order to study the characteristics of flyer's acceleration by divergent detonation wave, a 2D numerical code TDY2D was developed. By using the equation of state of detonation products which are got by computing for the experimental models, the TDY2D is used to compute the motion of flyers driven ...
Compression Isentropes of Copper and Aluminum under 40 GPa
WANG Gui-Ji, TAN Fu-Li, SUN Cheng-Wei, ZHAO Jian-Heng, WANG Gang-Hua, MO Jian-Jun, ZHANG Ning, WANG Xiao-Song, WU Gang, HAN Mei
2009, 23(4): 266-270 . doi: 10.11858/gywlxb.2009.04.005
PDF (819)
Abstract:
Using the magnetically driven apparatus CQ-1.5 developed by us, compression isentropes of copper T1, LY12 aluminum, and pure aluminum L1 are measured up to 40 GPa by Doppler pins system (DPS) and Velocity Interferometer System for Any Reflectors (VISAR), respectively. The experimental compression is...
Modification of Tuler-Butcher Model with Damage Influence
JIANG Dong, LI Yong-Chi, GUO Yang
2009, 23(4): 271-276 . doi: 10.11858/gywlxb.2009.04.006
PDF (1276)
Abstract:
A modificatin of Tuler-Butcher model including damage influence was presented, which was incorporated into a hydrodynamic one-dimensional finite difference computer code, to simulate the process of spall fracture of 45 steel and Al-Li alloy. The calculated results are in good agreement with experime...
Application Research on JWL Equation of State of Detonation Products
ZHAO Zheng, TAO Gang, DU Chang-Xing
2009, 23(4): 277-282 . doi: 10.11858/gywlxb.2009.04.007
PDF (1189)
Abstract:
By investigating the JWL equation of state of detonation products of condensed explosive, we present a method to determine JWL parameters by fitting. This approach does not require cylinder test and is more economical, secure, convenient and accurate than existing methods. Using this method, four ki...
Experimental Study on Dynamic Behavior of Lead Plate Driven by Two Head-on Colliding Detonation Waves
ZHANG Chong-Yu, HU Hai-Bo, LI Qing-Zhong, YUAN Shuai
2009, 23(4): 283-287 . doi: 10.11858/gywlxb.2009.04.008
PDF (932)
Abstract:
In order to investigate the configuration and mass distribution of collision bulging, dynamic behaviors of Pb plate driven by collision of head-on sliding detonation waves were characterized with high-speed frame photography and pulsed X-ray radiography. Experimental results showed that a bulging si...
Analytic Equation of State for Generalized Morse Potential Fluid and Application to N2 Fluid
XUE Xin-Ying, SUN Jiu-Xun, TIAN Rong-Gang
2009, 23(4): 288-298 . doi: 10.11858/gywlxb.2009.04.009
PDF (723)
Abstract:
The analytic expressions for equation of state (EOS) and thermodynamic properties have been derived for the generalized Morse (GM) potential fluids, by using the Ross variational perturbation theory and the analytic Percus-Yevick (PY) expression of radial distribution function of hard spheres. Exten...
Effects of High Pressure Treatment on Structures and Luminescence Properties of Nano ZnO and Composite ZnO/SnO2 Materials
SUN Zhen-Ya, WANG Shuo, DENG Yun-Di, LI Ming-Fa
2009, 23(4): 299-304 . doi: 10.11858/gywlxb.2009.04.010
PDF (739)
Abstract:
The nano ZnO and nano composite ZnO/SnO2 materials were prepared by sol-gel method, then the prepared specimens were treated by high pressure method of which the pressure is up to 6 GPa. X-ray diffraction (XRD) and transmission electron microscopy (TEM) and photoluminescence spectrometer were employ...
Raman Scattering Studies of n-Octane under High Pressure
WU Xiao-Xin, LI Min, LI Fang-Fei, ZHOU Qiang, GAO Wei, CUI Qi-Liang, ZOU Guang-Tian
2009, 23(4): 305-309 . doi: 10.11858/gywlxb.2009.04.011
PDF (752)
Abstract:
High pressure Raman spectra of n-octane were investigated by diamond anvil cell (DAC) at pressure up to 7 GPa and ambient temperature. The result shows that the liquid-solid phase transition of n-octane takes place around 0.8 GPa. Within the experimental pressure range, the Raman shift of n-octane m...
Molecular Dynamics Simulation of Water under Superhigh Pressure
ZHOU Xiao-Ping, YANG Xiang-Dong, LIU Jin-Chao
2009, 23(4): 310-314 . doi: 10.11858/gywlxb.2009.04.012
PDF (876)
Abstract:
Thermodynamic properties and structure of water under superhigh pressure were investigated by Equilibrium Molecular Dynamics (EMD) simulations. The obtained heat of vaporization and self-diffusion coefficient are in good agreement with the experimental data. With the increase of pressure, the hydrog...
Experimental Studies on Hugoniot Data of Methane-Air Mixtures under Shock Compression
WANG Xiao-Yan, HUA Jing-Song, WEN Shang-Jie, JIN Shan, SUN Xue-Lin
2009, 23(4): 315-320 . doi: 10.11858/gywlxb.2009.04.013
PDF (827)
Abstract:
To study the state parameters of methane-air mixture under shock compression, Aluminum target chamber filled with methane-air mixture were impacted by tungsten alloy projectiles. Projectiles were accelerated to about 5 km/s using a two-stage light gas gun. Methane-air mixture with different air rati...

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