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

1997 Vol. 11, No. 2

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A Co-Relation of Dynamic Fragmental Fractal Dimension with the Loading
ZHANG Guan-Ren
1997, 11(2): 81-84 . doi: 10.11858/gywlxb.1997.02.001
PDF (894)
Abstract:
By using the generalized Mott formula deduced by Grady and Kipp, the formulae describing the fragment distribution under dynamic loading and the fractal dimension are obtained and presented in this paper. Furthermore, their connection with the loading and loading time is established. On the basis of...
A Study on Polyaniline FTIR and Its Resistance under High Pressure
XIAO Wan-Sheng, WENG Ke-Nan, PENG Wen-Shi, BAO Zhong-Xing, LIU Cui-Xia, ZENG Xing-Rong
1997, 11(2): 85-89 . doi: 10.11858/gywlxb.1997.02.002
PDF (690)
Abstract:
A Mao-Bell type of diamond anvil cell with Ⅱ-Type Diamond as anvil and infrared window has been used to study in situ Fourier transform infrared (FTIR) spectra of polyaniline under high pressures from 0 to 8.4 GPa. It shows that, between 4.8 and 5.2 GPa, areas of infrared absorption peaks standing f...
Shock Synthesis of Zinc Ferrite and Its Photocatalytic Activity in Dehydrogenation of H2S
LIU Jian-Jun, TAN Hua, XU Kang, HE Hong-Liang
1997, 11(2): 90-97 . doi: 10.11858/gywlxb.1997.02.003
PDF (646)
Abstract:
Zinc ferrite fine powders were synthesized from a very uniform mixture of nanometer zinc oxide and nanometer ferric oxide powders, by using shock compression techniques up to pressures 37 GPa, or by conventional high temperature calcination at 700 ℃ for 10 h. Both types of samples were used as a pho...
A Theoretical Calculation for the Hugoniots and Temperatures of Water Using the Exponential-Six Reference Potential
YANG Xiang-Dong, WU Bao-Jian, HU Dong, JING Fu-Qian
1997, 11(2): 98-102 . doi: 10.11858/gywlxb.1997.02.004
PDF (665)
Abstract:
With the exponential six reference potential, the shock Hugoniots and temperatures of water are calculated by using Ree's improved WCA theory and Ross' variational fluid perturbation theory. Our calculation results agree well with the experimental data.
Multi-Stage Air-Gap Fiber Optic Probe
FANG Qing, TAN Xian-Xiang
1997, 11(2): 103-109 . doi: 10.11858/gywlxb.1997.02.005
PDF (712)
Abstract:
Multi-stage air-gap fiber optic probe (MAFOP) is used to measure detonation velocity for solid and liquid explosives. The MAFOP is made of plastic fiber with 0.8 mm in diameter, 10 meters in length and 0.25 in numerical aperture. There are four holes drilled on the input end of the fiber which are u...
Using Mach Reflection Effect in Synthesis of Ultrafine Diamond by Detonation Wave Method
ZHAO Sheng, YUN Shou-Rong, CHEN Quan, MA Feng, CHEN Peng-Wan
1997, 11(2): 110-116 . doi: 10.11858/gywlxb.1997.02.006
PDF (789)
Abstract:
This paper proposes a method to use Mach effect in explosive detonation to enhance the yield of ultrafine diamond. The detonation parameters on Mach rod were computed by Whitham method. The cylindrical charge in experiment was TNT wrapped with TNT/RDX (30/70) charges. Ultrafine diamond can be obtain...
Critical Curves of Binary Systems Vapor-Liquid
TIAN Yi-Ling, SONG Ying, REN Xiao-Wen, ZHANG Feng-Cai
1997, 11(2): 117-123 . doi: 10.11858/gywlxb.1997.02.007
PDF (787)
Abstract:
Six basic types of gas-liquid critical curves for binary systems have been analyzed and described. By the equation of state obtained from hard-ball model which is suitable for high temperature and high pressure, critical curves of four systems are calculated. In calculations, there are only three ad...
A Kind of Low Temperature Target System and Its Application in Shock Compression Studying of Liquid
SUN Yue, CHEN Xian-Meng, CHEN Pan-Sen, LIU Fu-Sheng, ZHOU Xue-Fen, ZHANG Qing-Fu
1997, 11(2): 124-129 . doi: 10.11858/gywlxb.1997.02.008
PDF (884)
Abstract:
This paper presents a kind of low temperature target system (temperature between 180～290 K) for the two-stage light gas gun and the technique for preparing molecular liquid samples of high purity at low temperatures. This technique was successfully used in preparing liquid CO2 samples. The shock com...
A Study on High Velocity Impact of Spherical Projectile against Steel and Aluminium Target Plates and the Scaling Relation
WEN Dian-Ying
1997, 11(2): 130-136 . doi: 10.11858/gywlxb.1997.02.009
PDF (718)
Abstract:
The data of cratering in the penetration of high velocity impact of tungsten, steel, zirconium and titanium ball projectiles against steel and aluminium target plates are given; the corresponding scaling relations are discussed.
Diamond Synthesis from a System of Silicon-Carbide and Iron
JIANG Jin-Chun, LI Liang-Bin, HONG Shi-Ming, ZHONG Yu-Mao, ZHANG Xin-Yuan, WEI Jian-Jun
1997, 11(2): 137-141 . doi: 10.11858/gywlxb.1997.02.010
PDF (917)
Abstract:
In order to ascertain the mechanism of the effect of catalysts on the process of diamond formation from SiC, it is necessary to investigate the behaviour of the SiC admixed with different metallic catalysts under high pressure and high temperature. In this work, SiC and iron powders were mixed in we...
A Study on the Pressure-Resistance of Coliform Group in Raw Milk
CHI Yuan-Bin, MA Xiao-Fan, LIU Bo, CUI Qi-Liang, JIN Zeng-Sun, LUO Wei
1997, 11(2): 142-144 . doi: 10.11858/gywlxb.1997.02.011
PDF (926)
Abstract:
In order to investigate the pressure-resistance of the coliforms, the milk samples inoculated with coliforms were treated at 20 ℃ and the pressures ranging from 0.1 to 430 MPa for 5 or 15 min. Results show that the most coliforms can survive at 40MPa.More than 70% of the coliforms, however, were kil...
Experimental Studies of Alumina Ceramic against a Shaped-Charge Jet Penetration
TAN Duo-Wang, XIE Pan-Hai
1997, 11(2): 145-149 . doi: 10.11858/gywlxb.1997.02.012
PDF (947)
Abstract:
The interaction between an alumina ceramic target and a shaped-charge jet is observed by means of flash X-ray photography. The results show that the crater collapse occurs during jet penetration, which results in the disalignment and break-up of the jet and hence lower down its penetration capacity.
Effect and Mechanism of the Solution Carbon in Ni-Mn Powder Catalyst
YI Jian-Hong, MA Fu-Kang, Lü Hai-Bo
1997, 11(2): 150-155 . doi: 10.11858/gywlxb.1997.02.013
PDF (644)
Abstract:
Effects of solution carbon in Ni-Mn powder catalyst on diamond synthesis were investigated by using a cubic press. The behavior of the solution carbon in the synthesizing process was examined. Experiment results show that the solution carbon in the powder catalyst can increase not only the yields of...
The Projectile Impacting Velocity Measurement Technique with Splitting Laser Beams
ZHANG Guang-Jun, TIAN Chang-Jin, HE Peng
1997, 11(2): 156-160 . doi: 10.11858/gywlxb.1997.02.014
PDF (638)
Abstract:
We designed and developed an element, which can split a single laser beam produced by a He-Ne laser device of 4 mV power into ten paralleled laser beams with an equal space-distance of 5 mm between each beam pair. We have developed a photo-electric transformer, which is of high sensitivity, waveform...

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