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High-purity alumina has excellent performance and wide application in high-tech industries and areas of modern materials, so industrialized, low-cost, non-polluting and sustainable development preparation process has become one of the priorities of present high-purity alumina powder research.
The demand and application in high-precision and wear-resistant materials such as the catalyst carrier, the carrier coating, components material of mechanical products, fluorescent translucent coatings and other emerging fluorescent decorative materials, luminescent diode substrate materials, HPS transparent alumina tube, anti-scratch disk of scanner, special optical instrument windows, metal-ceramic additives in lubricating oil, as well as artificial crystals (artificial sapphire and ruby of laser materials) are more and more concerned [2] - [9].
High-pure alumina preparation techniques and production status [J], Kunming University of Technology Journal (Science and Technology Version), 2003.28 (3): 22- 24
Mechanical Engineering Materials, 2006, 03: 44 -47
Kunming University of Science Journal (Science and Technology Version), 2003, 03: 22 -24

Geometric Parameters and Material Properties.
Acknowledgment The project is supported by Jilin Provincial Science & Technology Department (P.
Guo: Journal of System Simulation Vol. 17 No. 12 (2002), p. 2869-2872.
Lin: Journal of Materials Processing Technology Vol. 129 (2002), p. 513-517
Barber: Journal of Tribology Vol. 123 (2001), p. 699-707

This paper present the effects of gas flow on nanostructure materials prepared from tin powder.
SnO2 nanostructures materials were synthesized by various gas flowing.
The effects of gas flow on nanostructure materials were observed.
Materials Letters 59 (2005) 1670-1672 [5] S.
Advanced Materials Research Vols. 93-94 (2010) 421-424

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.

Take “black-headed dull” light aircraft which was self-designed by researchers of Nanchang Hangkong University as a example, the amount of composite materials used on it was reached on ninety percentage, most of the materials are carbon fiber reinforced composites.
Acoustic emissions are stress waves produced by sudden movement in stressed materials.
Second, acoustic emission detects movement of materials or structure, while most other methods detect existing geometrical discontinuities.
Acknowledges We gratefully acknowledge the National Natural Science Foundation of China (Nos. 61062010) and Aviation Science Foundation (Nos. 2007ZF56013) for their support of this work.
References [1] Sinke J.: Journal of Materials Science, Vol.41 (2006), p.6777 [2] Caprino G, Teti R.: Journal of Composite Materials, Vol.28 (1994), p.1237 [3] Schechinger B, Vogel T.: Construction and Building Materials, Vol.21 (2006), p.483 [4] Shiotani T, Li.Z., Yuyama S.: Journal of Acoustic Emission, Vol.19 (2001), p.118 [5] Gang Q.: International NDT&E,Vol. 33(2000), p133 [6] Awerbuch J., Ghaffari S.: Journal of Reinforced Plastics and Composites, Vol.7 (1988), p.245 [7] Olivier S., Hiroshi T.: Carbon Fiber-reinforced Plastic Materials, Vol.25 (2000), p.533 [8] S.R.

Experiment Materials.
Hirashima, Structural Changes in Sol-Gel Derived SiO2 and TiO2 Films by Exposure to Water Vapor, Journal of Sol-Gel Science and Technology. 10 (1997) 45-54
De Jonghe, Room temperature synthesis of crystalline metal oxides, Journal of Materials Science. 32(1997) 6001-6008
Yuan, Low-temperature preparation of photocatalytic TiO2 thin films on polymer substrates by direct deposition from anatase sol, Journal of Materials Science & Technology. 22(2006) 239-244
Preparation of TiO2 loaded with crystalline nano Ag by a one-step low-temperature hydrothermal method, Journal of Materials Chemistry. 22(2012) 16306-16311

Journal of Hazardous Materials, 2000, 79(l-2):31-39
Journal of Hazardous Materials, 2005, 121(l-3):23- 30
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Beijing: Science Press, 1987.
Journal of PLA University of Science and Technology (Natural Science Edition), 2008, 9(4): 345 - 350.

Tests are conducted according to T0804-1994 from Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering (JTG E51-09).
If the recycled material is base material, it is cement stone itself.
Acknowledgments The authors appreciate the support of the Science Foundation Projects of Zhejiang Province (2011H26), and Shaanxi Key Disciplines Construction Special Projects (E01004).
Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering[S].Beijing: People's Traffic Press, (2009)
Highway Engineering, (2011), p.17-109 [5] DUAN Chun-xiang, Graphic Method by Higher Curve for the Maximum Dry Density and the Optimum Water Content[J].Journal of Shaoyang University, (2006), p. 02-78

is the pore radius of binding materials, cm, M is the molecular weight.
East China University of Science and Technology Press ,2007.
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Materials for adsorption Separtation[M].

The research of preparation of Nano-composites material Graphene plays a ​​important role in innovation in the field of nano-materials.
Stankovich S(Graphene-based composite materials)，C.L.
Journal of the American Society for Information Science and Technology. 2006(57):359-377
New Chemical Materials, 2010,38(3):27-28.
New Carbon Materials, 2010, 25(6):402-404.