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improves due to the additives. The adhesion between coatings and aluminum foam matrix is good and reaches its maximum value at the current density of 1 A/dm2 and coating thickness of 28-30 μm. The elastic... at temperature above 650 ℃. Ecorr, Epit and Epp of aluminum foams shift 238, 51 and 220 mV towards positive after electroplated, respectively. Key words: aluminum foam; electroplating; bonding force; hot shock......
to calculate its effective density. Aluminum alloy foams with approximate relative density (defined as the density of the foam ρ* divided by the density of the cell wall material ρs) ranging from 0.25... images of aluminum foams with different open-cell sizes: (a) 0.9 mm; (b) 1.6 mm typical SEM photographs of foam microstructures. 3 Dynamic measuring techniques and optimized data processing High......
size, the open-celled aluminum foam prepared by the former method has a higher thermal conductivity coefficient obviously. It is largely because that the sample prepared by counter-gravity...Thermal properties of open-celled aluminum foams prepared by two infiltration casting methodsWANG Hui(王辉), ZHOU Xiang-yang(周向阳), LONG Bo(龙波), WEN Kang(文康), YANG Tao(杨焘) (School of Metallurgy......
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roughness of castings made by EPSC-VL is better than that of LFC.Key words:aluminum alloy; expendable pattern shell casting with vacuum and low-pressure; lost foam casting; microstructure; properties... %,166.4 %和17.6 %；其铸件表面质量也优于消失模铸件的表面质量.关键词:铝合金；真空低压消失模壳型铸造；消失模铸造；组织；性能Comparison of microstructures and properties of aluminum alloy between expendable pattern shell casting with vacuum and low-pressure......
Research Institute of Petroleum Engineering, Beijing 100101, China)Abstract:In order to present a new method for plugging channeling in oil field, the injection modes and validity period of foam system... reservoir pressure, permeability, oil saturation and gas-to-liquid ratio were studied through dynamic experiment. Then, in light of the technology characteristics of foam injection in oil field......
automatically. The size of the cylindrical foam specimens was d80 mm × 100 mm. Fig. 1 Topologies of high porosity closed-cell aluminum foams 3 Results and discussion 3.1 Cell wall microstructure Figure... 2014; accepted 20 June 2014 Abstract: The effects of cell wall property on the compressive performance of high porosity, closed-cell aluminum foams prepared by gas injection method were investigated......
and solidification of Al LFCs[J]. AFS Transactions, 1998, 106: 357-363. [15] SHIVKUMAR S, WANG L, APELIAN D. The lost-foam casting of aluminum alloy components[J]. JOM, 1990, 42(11): 38-44. [16..., Changsha 410083, China Received 28 July 2006; accepted 15 September 2006 Abstract: Lost foam casting (LFC) is regarded as a cost-effective, environment-friendly vital option to the conventional......
is difficult to propagate into a closed-cell aluminum foam. Better sound absorption performance is achieved by punching holes in the closed-cell aluminum foam [11,17,18]. In addition, open-cell...-chun, Wang Xiao-lin, Li bing, Yin Yao, Liu Ke. Sound insulation property of Al-Si closed-cell aluminum foam bare board material [J]. Transactions of Nonferrous Metals Society of China, 2007, 17(1): 93-98......
the main processing parameters and void content of aluminum foam is shown. 2 Experimental 2.1 Preparation of aluminum foam samples A356 alloy and soluble sulfate particles were the main raw materials used... process of aluminum foam samples mainly included the following steps: 1) Preparing preform. Firstly, soluble sulfate particles were wetted by spraying a high temperature adhesive onto their surface......
