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in quenching process under different water spray volumes GAO Jing-na(高静娜)1, 2, GAO Ying(高颖)2, XU Qin-ran(徐钦冉)1, WANG Ge(王葛)1, LI Qiang(李强)1, 3 1. National Engineering Research Center for Equipment... Abstract: Cooling strength is one of the important factors affecting microstructure and properties of gas cylinders during quenching process,and reasonable water spray volume can effectively improve......
was prepared by a short-term recycling technique which contains the oxidation and reduction- carbonization procedures. The thermal spray feedstock powder was fabricated by the process consisting of spray drying and heat-treatment. The recycled WC-Co cemented carbide coating was fabricated by high velocity oxy fuel (HVOF) method. Moreover, the microstructure, wear resistance and its mechanism of the coating......
Microstructure and Mechanical Properties of Spray Deposited Ni-based Superalloys米国发hool of Materials Science and Engineering, Henan Polytechnic University摘 要:Three kinds of superalloys were prepared by spray deposited process. The analysis results of microstructures and mechanical properties indicate that the spray deposited preforms with higher......
Effects of Specimen Shape and Size on Water Loss and Drying Shrinkage of Cement-based Materials巴明芳1,钱春香2,WANG Hui21. Faculty of Architectural Civil Engineering and Environment, Ningbo University2... of mortar and concrete respectively were investigated. The experimental results showed that the effects of specimen size and shape on water loss ratio were consistent with those on drying shrinkage strain......
Influences of Reinforcement on Differential Drying Shrinkage of Concrete高小建School of Civil Engineering, Harbin Institute of Technology摘 要:Shrinkage strain of concrete specimen with different reinforcement configuration was measured at various depths from the exposed surface by using several pairs of displacement sensors. Only one surface of the concrete......
Physical Model of Drying Shrinkage of Recycled Aggregate Concrete郭远臣1,2,WANG Xue2,QIAN Jueshi11. College of Materials Science and Engineering, Chongqing University2. College of Civil Engineering,Chongqing Three Gorges University摘 要:We prepared concretes(RC0, RC30, and RC100) with three different mixes. The poresize distribution parameters of RAC were......
Effect of Fly Ash on Drying Shrinkage of Thermal Insulation Mortar with Glazed Hollow Beads范树景1,2,王培铭11. School of Materials Science and Engineering, Tongji University摘 要:Drying shrinkage of thermal insulation mortar with glazed hollow beads was measured by a vertical length comparator, and the influences of fly ash with different contents(0, 18%, 36......
Influence of Drying Methods on Fractal Geometric Characteristics of Mesoporous Silica Aerogels赵善宇1,2,3,XU Haixun2,WANG Lijiu2,J William Suggs31. School of Environmental and Safety Engineering... modification/ambient drying method and freeze drying method were introduced to research the synthesis of mesoporous silica aerogels. By analyzing N2 gas adsorption/desorption isotherms, the fractal geometric......
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Microstructure of spray formed Al-Zn-Mg-Cu alloy with Mn addition CAI Yuan-hua1, LIANG Rui-guang2, SU Zhan-pei2, ZHANG Ji-shan1 1. State Key Laboratory for Advanced Metals and Materials... July 2010 Abstract: With the aim to improve the strength of Al-Zn-Mg-Cu alloy, the alloy billet containing Mn was produced by spray forming method, and the microstructural features were investigated......
