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Study on Microstructure and Mechanical Properties of Mg9AlZnGdY Magnesium Alloy after T6 in Lost Foam Casting Zhong Zhao1, a, Qiang Luo2,b and Zi Tian Fan2,c 1School of Mechanical Engineering, Ningbo University of Technology, China 315016 2 State Key Laboratory of Material Processing and Die ＆ Mould Technology, Huazhong University of Science and Technology, Wuhan, China 430074 azzsee@yahoo.cn, bluoqiang_2008@yahoo.com.cn, cfanzt@mail.hust.edu.cn Keywords: Magnesium alloy, lost foam casting (LFC), microstructure, mechanical property Abstract.
Acknowledgements This work was financially supported by the Zhejiang Natural Science Foundation (Y1110106) and the National High Technology Research and Development Program of China (2007AA03Z113).
Lin: The Chinese Journal of Nonferrous Vol. 11(2001), p. 99 In Chinese [5] I A Anyanwu, S Kamado, Y Kojima: Materials Transactions Vol. 42(2001), p. 1212 [6] X.M.Zhang, J.M.Chen, Y.L.Deng:The Chinese Journal of Nonferrous Vol. 15(2005), p. 1925 In Chinese [7] Jing G.Y.
,Li J.H.: Journal of the Chinese Rare Earth Society Vol. 25(2007), p. 610 In Chinese [8] Qiang Luo, Zhong Zhao, Qi-zhou Cai, Zi-tian Fan: Foundry, Vol.59(2010), p. 568 In Chinese [9] Q.S.

Study on Film-forming Technique of Aluminum Composite Membrane Prepared by Inorganic Precursor Sol-gel Method GUO Lin Lin 1,a , WANG Hong Min1,b , LIU Wei1,c , XU Mei1,d 1Department of Chemistry and Environmental Science, Cangzhou Normal College, Cangzhou, 061000, Hebei, China aguolinlin0613@163.com, bwhm1961@sina.cn, clw9225@sina.com, dxm308@163.com Keywords: film-forming technique, sol-gel method, inorganic precursor, composite membrane Abstract.
Table 1, Schedule of Reagent Reagent Name Molecular Formula Reagent Name Molecular Formula Aluminum Nitrate Al(NO3)3·9H2O Anhydrous Ethanol CH3CH2OH Zirconium Oxychloride ZrOCl2·8H2O Ammonia NH3·H2O Tetraethyl Orthosilicate (C2H5)4SiO4 Nitric Acid HNO3 Preparation of composite Sol with Inorganic Precursor With Al(NO3)3 as the raw material and ammonia as a catalyst, aqueous ammonia is heated to 80°C to 90 °C in water bath, and then an appropriate amount of Al(NO3)3 is added to hydrolyze, and after a certain time of reaction add nitric acid as precipitate to peptizing it.
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Model establishment and analysis of concrete dam A reservoir staunch that is shown as fig.1 is built of concrete materials.
The concrete material parameters are shown in table 1.
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The elastic modulus of the workpiece and positioning components are respectively and , Poisson's ratio are and .The static coefficient of friction for the workpiece–fixture material pair is taken to be 0.2.
Acknowledge This project was supported by National nature science founding (50975046) and shanghai leading academic discipline project (No.
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[5] QIN Guo-hua, An Optimal Method to Clamping Force DeterminationBased on the Minimum Norm Principle Journal of North University of China, Vol. 32(2011), p. 442-448

Design In our paper, copper was chosen as our metal materials, since it has low receptivity to decrease the skin effect loss at high frequency.
The authors gratefully acknowledge the assistance of Key Laboratory of Instrumentation Science & Dynamic Measurement (North University of China), Ministry of Education, National Key Laboratory for Electronic Measurement Technology.
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Science and Technology Support Project (Grant No.
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Static Analysis on Slewing Bearing with Negative Clearance Based on ANSYS Ming Qiu1,a, Jiafei Yan1,b ,Long Chen1,cand Binhai Zhao2,d 1School of Mechatronic Engineering, Henan University of Science and Technology, Luoyang,471003, China 2 Luoyang Bearing Science and Technology Co.
Acknowledgement The authors are grateful to the the National Natural Science Foundation of China (Grant No. 50775066) , the Program for Science & Technology Innovation Talents in Universities of Henan Province (No. 2009HASTIT008) and the Scientific Research Common Program of Luoyang (No. 1001040A).
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Li: Journal of Nanjing University of Science and Technology Vol.31 (2007) No.4, pp.458-461, in Chinese
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To date, most of the bubble growth modelling related studies focused on the bubble growth in polymer foam processes to obtain the desired cell size in porous materials [7, 8].
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Payne, Modeling the Cycles of Growth and Detachment of Bubbles in Carbonated Beverages, The Journal of Physical Chemistry B, 110 (2006) 7579-7586
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Liu[3] used the horizonatal 2D unsteady flow mathematical model on the dilution and diffusion process of dissolved materials in the Yangtze River; Xu and Hua[4] built a 3D flow and pollution transport mathematical model by POM on the south branch of the Yangtze River, and used it to calculate the pollution zone caused by a outlet in the west of Shanghai.
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