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Xia and Ran Liu School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China atozyz1@163.com,b309367704@qq.com Keywords: Abnormal grain growth, Cold rolling, Aluminum, Annealing.
Acknowledgements This work is supported by the National Natural Science Foundation of China (No. 51675007) , the National Natural Science Foundation of Beijing(No. 3142007), and The Great Wall scholar fund (No.
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Introduction Plant-mix hot reclaiming asphalt pavement takes full advantage of waste materials.
However, due to add the waste materials, how to ensure the pavement performance of recycled asphalt mixture is the key to determine its promotion [1-2].
Many years of experience of using it shows that plant-mix hot reclaiming asphalt mixture should be good service performance as new asphalt mixture when materials and construction technology have been reasonable controlled.
RAP is from the recycled materials of Shanghai-Nanjing highway by pavement planer, and it meets certain technical requirements.
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Investigations have shown that CVD diamond films with only mediocre phase purity are more wear resistant than other low-wear materials, e.g.
The energy loss spectra give a great deal of information about bonding in materials.
This may in some part be due to the use of a Si3N4 LFM tip, as similar materials have a higher propensity to adhesive wear.
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The trend of material development for thermal insulation composite systems is soaring, same as demands of society.
A 33-story skyscraper with double skin façade, grey water reuse system, made of recycled materials contains in its very center integrated solar chimney, which creates a stack effect through the whole building`s core allowing to ventilate excess heat without the need for additional mechanical ventilation, [8].
Cooling water feature – detail, in the left and description of function in the right, [12] Summary Reliable function of traditional wind towers developed in ancient time confirms, despite high progress in science and material research, we can truly look for advice in far past.
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The organic matte content of oil shale (kerogen) is corresponding reduction after ultrasonic radiation, which is further show that the content of oil source material in oil shale is reduced after ultrasonic radiation.
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Abstract:Thermal composition of low temperature water is taken as way in the text, with the MgSO4·7H2O and NH4HCO3 being raw materials to make nesquehonite whiskers, further talking about the concentration of the reactant, reactive temperatures, mixing speed, solution pH and the quantity of additive addition etc. factors impacting whiskers synthetic of magnesium carbonate hydrate by controlling the growth environment.
Domestic scholars[6-8] in different crystalline materials are also well prepared with different specifications of the nesquehonite whiskers, and a preliminary study of the temperature and additives on the growth of whiskers.
Conclusions Influences of the concentration of reactants, reaction temperature, dropping rate, pH, additive content in the reaction of MgSO4·7H2O and NH4HCO3, on the synthesis of hydrated magnesium carbonate whiskers, the following conclusions can be drawn: (1) By controlling the environment of crystal’s growth. the best performance magnesium carbonate tri-hydrate is made under the conditions of raw material concentration of whiskers in 0.5mol / L, reaction temperature 50 oC, pH value of 9.5, MgSO4 of a dropping rate of 2.45mL/min, Addition level of 0.5%( by mass), the average length of 247μm, the average diameter of 7.2μm, the average length-diameter ratio of 34
Acknowledgements Authors wish acknowledge the National Natural Science Foundation of China for financial support of this work under project No.51004064.
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