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

2012 Vol. 26, No. 6

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Numerical Simulation of the Deflagration-to-Detonation Transition Behavior of Explosive HMX
DONG He-Fei, ZHAO Yan-Hong, HONG Tao
2012, 26(6): 601-607. doi: 10.11858/gywlxb.2012.06.001
PDF (540)
Abstract:
The deflagration-to-detonation transition (DDT) model of the granular HMX was established based on the two-phase detonation model. The equation of state of the gas products was described by the calculated results of the CHEQ-like program which was based on the statistical mechanical theory. The DDT ...
A Revised Ruby Pressure Scale up to 160 GPa
JIN Ke, WU Qiang, GENG Hua-Yun, CAI Ling-Cang, JING Fu-Qian
2012, 26(6): 608-616. doi: 10.11858/gywlxb.2012.06.002
PDF (446)
Abstract:
The ruby pressure scale is revised using available static compression data of eleven markers at pressures up to 160 GPa, which includes Al, Cu, W, Au, Pt, Ta, Ag, Mo, Ni, Co, and Zn. The shock wave reduced isotherms of these markers are derived from shock Hugoniot and thermodynamic data using the sa...
Synchrotron Radiation X-Ray Diffraction Study on Mn3Zn0.8Ni0.2N under High Pressure
HU Jing-Yu, SUN Ying, WANG Cong, ZHAO Qing, ZHANG Si-Jia, ZHANG Qing-Hua, LI Yan-Chun, LIU Jing, JIN Chang-Qing, YU Ri-Cheng
2012, 26(6): 617-620. doi: 10.11858/gywlxb.2012.06.003
PDF (504)
Abstract:
The structural stability of Mn3Zn0.8Ni0.2N was investigated up to 29.9 GPa by in situ angle dispersive X-ray diffraction using synchrotron radiation source and a diamond anvil cell. No structural phase transition was observed in the pressure range of 0-29.9 GPa. This result indicates that the change...
Hypervelocity Impact Experiment and Simulation for Ejecta
ZHENG Wei, PANG Bao-Jun, PENG Ke-Ke, LIN Min, FU Xiang
2012, 26(6): 621-626. doi: 10.11858/gywlxb.2012.06.004
PDF (490)
Abstract:
With more and more frequently increasing of human's space activities, ejecta produced by micrometeoroid and small space debris impacting on spacecraft surface will also further affect the space debris environment. The ground experiments and numerical simulations about aluminum sphere projectile hype...
Study on the Influence of Gaseous Deflagration Preparing Nano-SiO2 with Different Relative Mole Amounts of Precursor
YAN Hong-Hao, XI Shu-Xiong, LI Xiao-Jie, WANG Xiao-Hong, HUANG Xian-Chao
2012, 26(6): 627-631. doi: 10.11858/gywlxb.2012.06.005
PDF (418)
Abstract:
Taking SiCl4 as the precursor and the mixtures of hydrogen and oxygen as the explosion source, the influence on the product was investigated by changing the relative molecular mass of precursor. Through X-ray fluorescence (XRF), X-ray diffraction (XRD) and transmission electron microscopy (TEM), the...
Microscopic Mechanism Research on Graphite Nanosheets Preparation by Detonation Technique
SUN  Gui-Lei, LI  Xiao-Jie, YAN  Hong-Hao
2012, 26(6): 632-638. doi: 10.11858/gywlxb.2012.06.006
PDF (375)
Abstract:
According to the property that foreign materials can insert into graphite layers, nanometer graphite sheets with perfect performance can be prepared by detonation technique. This research, through establishing a finite element model of graphite intercalation compounds, obtained detonation parameters...
Effect of Dynamic High Pressure Microfluidization on the Crystal Structure of Dietary Fiber
WAN Jie, LIU Cheng-Mei, LI Ti, LIU Wei,
2012, 26(6): 639-644. doi: 10.11858/gywlxb.2012.06.007
PDF (551)
Abstract:
Differences in specific surface area and crystal structure between raw dietary fiber (DF) obtained from soybean and DF modified with dynamic high pressure microfluidization (DHPM) were analysis by nitrogen adsorption, X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The r...
Effect of Defects in-Plane of Metal Honeycomb on Its Dynamic Impact Properties
ZHANG Xin-Chun, LIU Ying
2012, 26(6): 645-652. doi: 10.11858/gywlxb.2012.06.008
PDF (386)
Abstract:
The influence of defects on the dynamic performance of honeycomb is widely studied, but it is mainly focused on the effect of defect type and defect ratio, and the influence of defect distribution has not yet been fully developed. Effect of defect (the cell missing) distribution domain and its size ...
Density Functional Theory Studies of the Electronic and Optical Properties of Zinc Blende InN under High Pressure
WANG Xi-Cheng, GUO Jian-Yun, ZHENG Guang, HE Kai-Hua, CHEN Qi-Li, WANG Qing-Bo, CHEN Jing-Zhong
2012, 26(6): 653-660. doi: 10.11858/gywlxb.2012.06.009
PDF (345)
Abstract:
First-principles density functional studies of the properties of zinc blende InN are presented. We have employed density functional theory, as implemented in the CASTEP code, to investigate the electronic, elastic and optical properties of the material zinc blende InN under hydrostatic pressure rang...
Electrical Property of Fe3O4/-CD under High Pressure
ZHANG Dong-Mei, XIAO Hong-Yu, ZHANG Yong-Sheng, HAN Yong-Hao, GAO Chun-Xiao
2012, 26(6): 661-664. doi: 10.11858/gywlxb.2012.06.010
PDF (448)
Abstract:
Electrical measurement under high pressure is an effective means to obtain physical property of materials. Using a microcircuit fabricated on a diamond anvil cell (DAC), we carried out the in-situ conductivity measurement on Fe3O4/-CD at pressures. The electrical conductivity of the sample increases...
Analysis of Reactive Hot Spot for Thermite under Shock Waves
WANG Xin-Zheng, ZHANG Song-Lin, ZHANG Qing-Ming, QIN Zhi-Gui, CHEN Min, LI Wen-Jie
2012, 26(6): 665-673. doi: 10.11858/gywlxb.2012.06.011
PDF (533)
Abstract:
Using laser scaners to measure the size of binary mixture of energetic materials thermite (Al+Fe2O3) and get the particle size distribution, the particle shape of aluminum powder, iron oxide and the contact status of the mixtures meeting the standard chemical proportion are observed under the electr...
First-Principles Investigations on Structural Transformation and Electronic Properties of BeP2N4 under High Pressure
DING Ying-Chun, LIU Hai-Jun, JIANG Meng-Heng, CHEN Min, CHEN Yong-Ming
2012, 26(6): 674-680. doi: 10.11858/gywlxb.2012.06.012
PDF (457)
Abstract:
Total energy of BeP2N4 as a function of unit cell volume was calculated for phenakite and spinel-type structures using the density function theory (DFT). According to the Brich-Murnaghan's equation of state, the bulk modulus B0 and B0=dB/dp for these two structures were obtained. The calculated resu...
Micron-Scale Fragments Ejected from Shocked Metal Surfaces Measured by Fiber-Optic Pins
WANG Rong-Bo, YE Yan, CHEN Yong-Tao, ZHOU Wei-Jun, LIU Zhen-Qing, HE Li-Hua, WU Ting-Lie
2012, 26(6): 681-686. doi: 10.11858/gywlxb.2012.06.013
PDF (464)
Abstract:
The interaction mechanism was analyzed between ejecta micro-spalling and fiber-optic pins. The fiber-optic pins and pulsed in-line particles holography were applied in the diagnosis of ejecta and micro-spalling from shocked metal surface. The experimental results from fiber-optic pins are in agreeme...
Experimental Investigation of Mixing at Tilted Interface Induced by Rayleigh-Taylor Instability
LIU Jin-Hong, TAN Duo-Wang, ZHANG Xu, HUANG Wen-Bin, ZOU Li-Yong
2012, 26(6): 687-692. doi: 10.11858/gywlxb.2012.06.014
PDF (439)
Abstract:
Experiments were performed to investigate dissymmetry of Rayleigh-Taylor (R-T) instability of immiscible liquid initialized with a oblique initial interface. High pressure gas was used to accelerate a container filled with various liquid, the direction of acceleration from the lighter liquid to the ...
Rapid Preparation and Characterization of the Surface Microstructures of AISI 304L Austenitic Stainless Steel by High-Current Pulsed Electron Beam
CAI Jie, ZOU Yang, WAN Ming-Zhen, PENG Dong-Jin, LI Yan, GU Qian-Qian, GUAN Qing-Feng
2012, 26(6): 693-699. doi: 10.11858/gywlxb.2012.06.015
PDF (264)
Abstract:
High-current pulsed electron beam (HCPEB) technique was used to irradiate the AISI 304L austenitic stainless steel. The vacancy defect clusters of the irradiated surface layer were investigated by using transmission electron microscopy. The experimental results indicated that a large number of super...
Research on Mechanism of Ultra-High Pressure Sterilization
WANG Rong-Rong, SUN Chuan-Fan, WANG Ting-Ting, HU Xiao-Song, ZHANG Yan, LIAO Xiao-Jun
2012, 26(6): 700-708. doi: 10.11858/gywlxb.2012.06.016
PDF (562)
Abstract:
Microorganism in food is one of the most important factors which cause food to decay. As one method of sterilization, ultra-high pressure has achieved significant effect in food manufactory. After a brief introduction to fundamental principle of ultra-high pressure sterilization technology, this rev...
Crystal Growth of Nylon 6 by High Pressure Annealing
XU Wei-Jie, CAO Da-Hu, YU Qiang
2012, 26(6): 709-714. doi: 10.11858/gywlxb.2012.06.017
PDF (494)
Abstract:
Using a cubic-anvil high pressure apparatus, Nylon 6 samples were annealed under different pressures. The crystallinity and crystal structure changes of Nylon 6 were studied by the methods of wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC) and infrared spectra. The resul...
Numerical Analysis on the Coaxial Collision of Variable Section Bar and Application Prospect
LUO Xin, XU Jin-Yu, LI Wei-Min, BAI Er-Lei
2012, 26(6): 715-720. doi: 10.11858/gywlxb.2012.06.018
PDF (485)
Abstract:
In order to perform extensive research on the coaxial collision of elastic bar, finite element model was established based on LS-DYNA, the influences of the shape parameters of variable section bar on the stress wave were analyzed, producing mechanism of stress wave was discussed, and its applicatio...

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