Plate impact tests at normal and elevated temperatures were conducted to examine the influence of temperature on the dynamic response of 2 aluminum alloys (2024-T4 and 7075-T6) with the temperature range of 300-750 K.The free-surface velocity profiles, including the elastic precursor amplitude, pull...

The effects of temperature on Fe-Mg compositions of garnet in a natural pelitic system were studied experimentally at temperatures from 700 to 780 ℃ and pressures from 2.1 to 2.9 GPa.The garnets formed in the run products were mainly characterized by magnesian and ferreous compositions.The contents ...

High pressure research is of great importance to the crucial information for many scientific and industrial applications, such as high pressure phase state, synthetic materials and recreating conditions deep inside the earth.Generally, the development of high pressure research is limited by the leve...

A double pulse pneumatic spray system was designed based on the requirements of multiphase explosion expriments.Water was employed to study the spray characteristics of the system.The two phase flow pattern in delivery pipe, the gas-liquid mixing process of spray room, the angle of spray, the Sauter...

By using the first principles method based on density functional theory, the physical properties of ferrous-bearing post-perovskite MgSiO₃ at high pressure were calculated.The results show that the high-spin state is conserved for ferrous irons from 0 to 160 GPa.The transition tendency from high-spi...

This work investigated the structural behavior of PbFe₁₂O₁₉ under high pressure by in situ angular dispersive X-ray diffraction (ADXD) measurements up to 55.3 GPa.The linear incompressibility B_a0=997(38) GPa and B_c0=556(22) GPa, and bulk modulus B₀=254(8) GPa are obtained by fitting the Birch-Murnag...

A vertical shock tube of 200 mm in inner diameter and 5 400 mm in height was used to study the deflagration and detonation parameters of ethane-air mixtures under a high initial pressure(0.25 MPa).The gas mixtures flow into the shock tube through two inlets at two ends of the shock tube instantaneou...

The particle and stability properties of phosphatides dispersions affected by pulsed electric field, ultrasound, microfluid were studied using dynamic light scattering techniques.Results indicate that the average diameter of phosphatides particles decrease from 594.4 nm to 259.2, 88.7, 37.8 nm after...

Through the plane-wave method in the framework of density functional theory in combination with the quasi-harmonic approximation, the mechanical stability, phase boundary, electronic structures and elastic properties of β-, w- and γ-Ge₃N₄ are investigated at high temperatures and pressures.The γ pha...

Testing non-metallic materials are of great value to mining industry.The MIE (Minimum Ignition Energy) characterize the danger of a kind of combustible gas and its ignition.We calculated the MIE of the ignition system which can be used to test the antistatic property of the mine using materials.Acco...