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Zhang b Electromechanics and Materials Engineering College, Dalian Maritime University, Dalian, 116026, China a cgsun@newmail.dlmu.edu.cn, bhczhang@newmail.dlmu.edu.cn Keywords: Self-Assembled Monolayers; Titanium Film; Ultraviolet Radiation; Friction; Functional Group Abstract.
Bothman: Nature Materials Vol. 3 (2004), p. 103-105 [2] M.
Biswas: Surface Science Vol. 600 (2006), p. 4399-4404 [6] M.
Salmeron: Surface Science Vol. 482 (2001), p. 1216-1221 [8] I.H.
Borguet: Journal of Physical Chemistry B Vol. 109 (2005), p. 9927-9938

Preparation process of green ceramic coating of magnesium alloy through micro-arc oxidation Sheng Wang, Wanwu Ding * School of Materials Science and Engineering，Lanzhou University of Technology, Lanzhou, China dingww@lut.cn Keywords: Magnesium alloy, Micro-arc oxidation, green ceramic coating Abstract.
Ebert: Materials Science and Engineering.Vol.
Guo, et al.: Journal of Harbin Engineering Univsrsity.
Liu: Transactions of Materials and Heat Treatement Vol.9(2012), p.128
[7] J.M Hao, X.Y.Tian, H.Chen, et al.: Transactions of Materials and Heat Treatement.

The metal powder(-200mesh in size，99.9% in purity)and distilled water were employed as the starting materials.
[2] E.Ivanov:Materials Science Forum Vol. 88-90(1992),p.475-480
Huang:Journal of Alloys and Compounds Vol.370 (2004),p.43-46
Yan: Materials Science and Engineering Vol.A444 (2007),p.1-5
[6] Raphaёl Janoy, Daniel Guérard:Journal of Alloys and compouds Vol.322(2002),p.302-307

Introduction In recent years, the development of the mold industry set forth stricter requirements for the research and development of new types of die materials [1].
The concept of functionally graded materials was put forward by the Japanese materials scientist Masayuki Niino [4].
Narayan Prabhu: Journal of Materials Engineering and Performance, (2004), p. 619-626 [2] N.P.
Shukla: Experimental Mechanics, (2006), p. 137-154 [5] Kwang Ho Lee, Young Jae Lee and Sang Bong Cho: Journal of Mechanical Science and Technology, (2009), p.1306-1322 [6] T.
Kietzman: Materials & design, (1999), p.83-89 [8] D.

Experimental Methods Testing materials The chemical composition of the testing material is shown in Table 1, the thermal treatment specifications are as follows: 900 ℃ ~ 925 ℃, 1h, air cooled + 565 ~ 595 ℃, 8h, air cooling or furnace cooling.
Evans, International Journal of Fatigue 31 (2009) 1751–1757
Duchene, International Journal of Fatigue 31 (2009) 2031–2040
[6] Lemaitre Jean, Chaboche Jean-Louis, Mechanics of solid materials.
Fatigue of materials. 2nd ed.

Part II deals with the experimental procedures which started with the characterization of raw materials.
Materials Science & Engineering.
Y., Aoki, M., Fujita, Y., Fujitani, W., Umakoshi, Y., & Takaoka, A, Materials Transactions, (2006), 47(9) [3] Ramay, H.
Journal of Biomedical Materials Research, (2013), 101(7), [5] Kivrak, N., & Tas, A.
Journal of American Ceramic Society (1998) 52(190968)

Models concern ductile materials, which are the most often used for structural elements.
Material: ferritic, Temp. -20oC, a/W=0.5.
Acknowledgements: The financial support from Polish Ministry of Science and Higher Education under contract N N501 199640 is gratefully acknowledged.
[2] ASTM (2002), ASTM E 399: Standard Test Method for Plain-Strain Fracture Toughness of Metallic Materials, ASTM International
International Journal of Pressure Vessels and Piping, 64, 277-285,(1995) [9] Sherry, A.H., France C.C., Goldthorpe M.R., „Compendium of T-stress solutions for two and three dimensional cracked geometries”, Fatigue and Fracture of Materials and Structures, 1995, Vol. 18, No. 1, str. 141-155

Introduction With the rapid increase of sewage treatment capacity of china,the amount of sludge also simultaneously increased significantly,Annual production about more than 3500 ten thousand tonnes sludge moisture content 80%, which is produced by the country's 3451 sewage treatment plants.According to survey results show that sludge produced in China, 80% have not been properly treated,treatment and disposal of sewage sludge is a serious problem.This study used aerobic fermentation composting system, with straw as a leavening agent, visit the composting process variation of temperature, moisture, pH, organic matter, dissolved organic carbon, germination index and other parameters of germination index[1]. 1 Experimental materials, apparatus and methods 1.1 Materials The dewatered sludge, Selected Xuzhou Guozhen Water operation ltd, as compost material,Wheat straw and corn stalk was used as a conditioner. 1.2 Experimental apparatus The experiment uses a cylindrical forced ventilation
As these easily degradable organic matter is microbial synthesis of their own material and converted into CO2 and H2O,The content of DOC gradually decreased.
References [1]ZHANG Xue-ying,ZHANG Yu-feng,XU Yan-hua.Effects of various bulking agents on the sewage sludge composting by using forced aerating in still pile system,Journal of Nanjing University of Technology.2003,25（5）：68-72
[2]Agricultural Chemistry Specialty Committee of Soil Science Society of China.Soil and agricultural chemical analysis method,Beijing:Science press, 1983
[3]TIAN Yang,　LIU　Li-fen,　ZHANG　Xing-wen.Study of co-composting of sewage sludge and straw biomass,Journal of Dalian University of Technology.2003，43（6）．753-758

Table 1 Main sizes of LNG tank Inner diameter of outer tank/m 60 Rise of vault/m 8.46 Height of tank wall/m 42 depth of vault/m 0.5 Thickness of tank wall/m 0.8 Thickness of base floor/m 0.8-1.2 Height of top ring beam/m 1.91 Width of ring space/m 1.2 Width of top ring beam/m 0.85 Height of thermal protection angle/m 3.95 The materials and corresponding parameters of LNG tank bottom and wall are shown in table 2 and table 3 respectively.
Table 2 Materials and corresponding parameters of LNG tank bottom Number Material Thickness/mm thermal conductivity/(W/(m.K)) 1 Inner tank base with 9% Ni Steel 5 28.5 2 Concrete leveling layer 96 1.80 3 Two tank bottom with 9% Ni Steel 5 28.5 4 Concrete leveling layer 100 1.80 5 Linoleum 4 0.635 6 First floor foam glass brick 135 0.055 7 Linoleum 4 0.635 8 Second floor foam glass brick 135 0.055 9 Linoleum 4 0.635 10 Third floor foam glass brick 135 0.055 11 Linoleum 4 0.635 12 Concrete leveling layer 89 1.80 13 Outer tank base with 16MnDR 8 38.5 14 Concrete bottom cushion cap 850 1.80 Table 3 Materials and corresponding parameters of LNG tank wall Number Material Thickness/mm thermal conductivity/(W/(m.K)) 1 Inner tank wall with 9% Ni Steel 10-30 28.5 2 Resilient felt 280 0.053 3 Expanded perlite 750 0.053 4 Metal lining plate with 16MnDR 15 50.5 5 Pre-stressed concrete wall 950 1.80 Results and discussion The LNG tank is meshed by 430 elements and 743 nodes, in order to verify
Acknowledgments This research was supported by the national natural science foundation (51206075).
Soil freezing characteristics and temperature distribution in in-ground LNG storage tank, International Journal of Offshore and Polar Engineering, 22 (2012) p.53-62
Finite element analysis of wall temperature field and stress distribution of large LNG storage tank at high temperature, Journal of Tianjin University Science and Technology, 45 (2012) p.505-510

Different materials suit different properties; therefore, developers experiment with several materials for biomedical use.
These materials can be divided in four groups: (1) metals, (2) ceramics, (3) polymers and (4) composite materials.
Materials for direct methods include many metal alloys, alloy blends, ceramics, composite materials, and even rapid prototype plastics [9].
However, the molding of filled/porous samples or other materials (e.g.
Journal of Materials Science, Vol. 35 (2000), p6065