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Simulation of fuzzy control systems for nonferrous alloy vacuum counter-pressure casting YAN Qing-song(严青松)1, CAI Qi-zhou(蔡启舟)1, WEI Bo-kang(魏伯康)1, YU Huan(余 欢)2, YU Zi-rong(俞子荣)2 (1. State... simulation analyses of vacuum counter-pressure casting fuzzy control systems based on MATLAB, fuzzy control systems designed by simulation can track technical route established well. When transmission......
pressure were 1823 K and 5–35 Pa, respectively. Above all, both the theoretical and experimental results showed that volatilization behaviors of Mo and S during vacuum decomposition process of molybdenite... the whole vacuum decomposition process. While the temperature was below starting decomposition temperature (1491 K or 1575 K), the saturated vapor pressure of MoS2 was smaller than the pressure in furnace......
Aging and thermal expansion behavior of Si3N4p/2024Al composite fabricated by pressure infiltration methodCHEN Guo-qing1, YANG Wen-shu1, 2, MA Kang1, Murid HUSSAIN 2, JIANG Long-tao1, WU Gao-hui1(1..., Italy)Abstract:The aging and thermal expansion behaviors of Si3N4p/2024Al composite fabricated by pressure infiltration method were investigated. The peak-aging time and peak hardness both decrease......
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. [6] RODRIGUEZ-GUERRERO, SANCHEZ S A, NARCISO J, LOUISB E, RODRIGUEZ-REINOSO F. Pressure infiltration of Al-12wt.% Si-X (X=Cu, Ti, Mg) alloys into graphite particle preforms[J]. Acta Materialia, 2006...) layer prepared by vacuum infiltration casting technique[J]. Surface & Coatings Technology, 2006, 201: 1711-1717. [11] 易振华, 易茂中, 冉丽萍, 杨 琳. 添加钛对炭/炭复合材料渗铜的影响[J]. 中国有色金属学报, 2006, 16(7): 1214-1219. YI......
Thermal conductivity of diamond/copper composites with a bimodal distribution of diamond particle sizes prepared by pressure infiltration methodCHEN Chao,GUO Hong,CHU Ke,YIN Fazhang,ZHANG Ximing,HAN... composites with bimodal particle sizes was studied.The composites were prepared through pressure infiltration of liquid copper into diamond preforms with a mixture of 40 and 100 μm-size diamonds.The......
, 400, 500 and 600 ℃. During the heating process the total pressure in the chamber was maintained below 4 mPa. Then the samples were allowed to cool down, for at least 15 min in the high vacuum... Influence of vacuum heat treatment on structure and micro-hardness of electroless Ni-P-SiC composite coating LONG Shi-guo(龙士国)1, MA Zeng-sheng(马增胜) 1, HU Wen-bin(胡文彬)2, ZHOU Yi-chun(周益春)1 1. Key......
pressure infiltration was performed for the continuous Cf/ZL301 composite with the volume fraction of 40%, of which the reinforced material was M40 graphite fiber and the matrix alloy was ZL301 alloy, both... and the residual stress of composite has changed in different extent because of the different treatment process. Key words: continuous Cf/ZL301 composite; vacuum pressure impregnation; cryogenic treatment......
. The average percentage of infiltration drop to a relatively stable value (50%) after 6 h. Rainfall infiltration causes obvious increase of pore-water pressure, which may result in a reduction of shear... section. As can be seen from Fig.7, in the early rainfall infiltration, soil permeability is very strong. Therefore, the pore-water pressure is at a relatively low level. The pore-water pressure......
Trans. Nonferrous Met. Soc. China 24(2014) 1779-1784 Pyrolysis mechanism of ZrC precursor and fabrication of C/C–ZrC composites by precursor infiltration and pyrolysis Chun-xuan LIU, Jian-xun CHEN...: C/C-ZrC composites were prepared by precursor infiltration and pyrolysis using the organic zirconium as precursor. The conversion mechanisms of the precursors such as the thermal behavior, structural......
