共搜索到28824条信息，每页显示10条信息，共2883页。用时：0小时0分0秒516毫秒
was refined,and the solid solubility of Mg in α-Al phase increased greatly.Correspondingly,the lattice parameter of α-Al phase increased.Al3Mg2 phases disappeared under high pressure... pressure.These metastable phases located in the interdendritic position.It was the first time that the metastable phase was found in Al-Mg alloy at a high pressure of 6 GPa.The formation mechanism......
......
: Counter gravity casting equipments(CGCE) were widely used to produce large thin-walled A357 aluminum alloy components. To improve the pressure control precision of CGCE to get high quality castings... of fully adapting itself to the object. The pressure control error is less than 0.3 kPa. By using this pressure control system, large complex thin-walled A357 aluminum alloy castings with high quality......
J. Cent. South Univ. (2019) 26: 2870-2877 DOI: https://doi.org/10.1007/s11771-019-4220-6 Calculation grid and turbulence model for numerical simulating pressure fluctuations in high-speed train... for numerical simulating pressure fluctuations in a high-speed train tunnel are studied through the comparison analysis of numerical simulation and moving model test. Compared the waveforms and peak-peak......
and multi-fractal analysis of pressure fluctuation in slurry bubble column bed reactor WANG Xing-jun(王兴军), HU Li-shun(胡立舜), SHEN Jun-jie(沈军杰), YU Zhi-nan(余志楠), WANG Fu-chen(王辅臣), YU Zun-hong(于遵宏) (Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, China) Abstract:The Daubechies second order wavelet was applied to decompose pressure fluctuation......
and the differential pressure transmitter by Windows based graphical user interface (GUI) software. A 2F04 high-speed camera with frame resolution 2320×1720 and frame rate 190 f/s was arranged 4 m away from.... To record the flow regimes in the tube, high-speed camera was used all through the experiments, meanwhile pressure drop of the test section was obtained by the differential pressure transmitter. Physical......
Kinetic process of oxidative leaching of chalcopyrite under low oxygen pressure and low temperature QIU Ting-sheng(邱廷省)1, NIE Guang-hua(聂光华)2, WANG Jun-feng(王俊峰)1, CUI Li-feng(崔立凤)1 1. School...; Abstract: Kinetic process of oxidative leaching of chalcopyrite in chloride acid hydroxide medium under oxygen pressure and low temperature was investigated. The effect on leaching......
Extraction of vanadium from vanadium slag by high pressure oxidative acid leachingGuo-quan Zhang,Ting-an Zhang,Guo-zhi Lü,Ying Zhang,Yan Liu,Zhuo-lin LiuKey Laboratory of Ecological Utilization... friendly manner,this study focuses on the process of leaching vanadium from vanadium slag by high pressure oxidative acid leaching.Characterizations of the raw slag,mineralogy transformation......
(such as a high level radioactive nuclear waste geological repository), the mineral particles comprising rock mass will generate pressure solution (as shown in Fig. 1), which makes the porosity and permeability decrease. Pressure solution incorporates three serial processes [1]. The first is mineral dissolution at high stress contacts of grains; The second is diffusive transport of mineral matter from contacts......
when LPC is associated with high pressure gas quenching.Then the less-known advantages of the LPC process, like the high accuracy and reproducibility of the results, the modeling possibility...The advantages of Low Pressure Carburizing in the Heat Treatment Subcontracting Business Guy PRUNEL1,Bruno STAUDER1 (1.BODYCOTE, Chassieu, France) 摘要:Low Pressure Carburizing (LPC) was introduced......
