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Effects of compositions on the chloride ion permeability of geopolymer concrete Qing Wang1,2 a, Jing Da2,b , Cunbao Zhang2,c, Zhaoyang Ding2,d, Zhitong Sui1,e 1 School of Materials & Metallurgy, Northeastern University , Shenyang, 110004, China 2 School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang, 110168,China.
Slag and metakaolin were chosen as raw materials and sodium silicate of low module as alkali activator to prepare geopolymer concrete.
Experiment Raw materials.
This can be explained by that the main materials of geopolymer are slag and metakaolin which consist with SiO2 and Al2O3.
(In Chinese) [3] M.Steveson: Journal of materials science, 2005, 40, 2023-2036 [4] Yunsheng Zhang, Wei Sun, Zongjin Li: Journal of the Chinese Ceramic Society, 2007, 35(4):420-424.

It was thought that a reduction in all these problems could be achieved using advanced cutting tool materials to reduce the heat generation by lowering the friction coefficient [4, 5].
Surface coating is an effective method to improve the wear resistance of the materials.
Ngoi: Journal of Materials Processing Technology.
Patil: Journal of Crystal Growth.
Patil: Applied Surface Science.

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Introduction During the thermoelastic vibration process two types of stresses appear in a plate: elastic, caused by bending, and thermal stresses, which causes the material to expand.
(4) The constants R1–R3 depend on elastic properties of material and are given in [6].
Acknowledgements This work was financially supported by the Ministry of Education and Science of the Russian Federation, as part of the state task «MGSU» project number 7.5383.2011.
[3] Kiran B.: A Review on Two Temperature Thermoelasticity (International Journal of Modern Engineering Research, Vol.2, Issue.6, pp. 4224–4227, 2012)
Fedosova: Solution for the Thermoelastic Vibration Problem of Rectangular Plate with Rigidly Fixed Edges (submitted to Journal “Industrial and Civil Engineering” (2013)).

More testing is still needed to establish the optimum radioactivity and volume injection rates needed to achieve the best results for various bulk flow Reynolds number and test section materials.
IEEE Nuclear Science Symposium Conference Record, 2005
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Experiment procedure Experiment materials.
The experiment materials included of 8 samples which was a ferrite nodular iron, and a pearlitic ductile iron, an alloyed ferrite ductile iron, alloyed pearlitic ductile iron, and a pearlitic ductile iron which was the pearlitic SG iron normalized, and a ferrite nodular iron which was annealed the ferrite nodular iron, or lower bainitic and upper bainitic SG iron.
Results and analysis Thermal fatigue tests, where the specimen is heated to 750±5℃ and cooled to 25±5℃ by water, could be used to evaluate a materials capacity to resist surface cracks [2, 3].
Crack of the annealing ferritic structure of ductile cast iron 400× References [1] LI Yuan-ru: submitted to Journal of Journal of Iron and Steel Research.Vol.14, p.41
[4] Bulloch, J.H: submitted to Journal of International Journal of Pressure Vessels and Piping:Vol.54(1993), p.497

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[16] Xin-Yu Ye, Min-Fang Chen, Chen You, De-Bao Liu: The influence of HF treatment on corrosion resistance and in vitro biocompatibility of Mg-Zn-Zr alloy,Frontiers of Materials Science in China 4 (2010) 132

Results and discussion Keeping other parameters of the device unchanged, the different materials of the bonding layer are selected and its thickness of the bonding layer is changed from 0.1mm to 0.5mm.
The device is optimized by selecting the appropriate thickness and materials of the bonding layer.
Finite element method is used to calculating with high precision, short development cycle, which having guiding significance for optimizing the design and improving the reliability of the devices The three typical bonding layer materials of conductive adhesive, 63Sn37Pb and Au80Sn20 change the thickness from 0.1mm to 0.5mm, studying the effects of material, thickness of the bonding layer and stress.
Journal of Mechanical Strength, 2008, 30(1): 137-143
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At present, the effective utilization of fly ash is mainly used for cement, concrete and mortar admixture, another application is as the main raw material of wall materials and silicate products.
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However, the difficulty of forming its industrial processing is increased by the high strength and high hardness of nitride ceramic materials, so the research of nitride ceramic materials in ultra-precision processing problem has prominent significance.
Laser-assisted machining technology [16] (LAM) use the strong laser to heat local of ceramic materials, making its surface materials brittle deformation by in high temperature into plastic deformation, at the same time take the principle of the traditional tool to remove that part of the material.
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