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Progress in Polymer Science Vol. 24 (1999) p. 221-274 [2] P.
Composites Science and Technology Vol. 67 (2007) p. 462-470 [5] T.
Chemical Engineering Journal 2011, 166: 1170-1178 [8] H.
Micromechanical analysis of coupling between anisotropic damage and friction in quasi brittle materials: Role of the homogenization scheme.
International Journal of Solids and Structures Vol. 45 (2008) p. 1385–1405

Study on Morphologies and Structures of Ceramic Coating Prepared by Micro-Arc Oxidation on TC4 Alloy Chaoshi Qiana，Pengfei Lib，Liang Liu，Feng Guo，Ya Ya College of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot, China aqianchaoshi@163.com，bli_pf@imut.edu.cn Key words: Ceramic Coating; Micro-Arc Oxidation; TC4; Electrolyte Abstract: In this work, the effects of concentration and mixture ratio of Ca(CH3COO)2·H2O and Na5P3O10 in electrolyte on surface morphology, surface content and atomic ratio of calcium and phosphorus elements, and phase structure of ceramic coating prepared by micro-arc oxidation (MAO) on TC4 titanium alloy were studied, a suitable formula of electrolyte for bio-modification of titanium by MAO was obtained, Ca(CH3COO)2·H2O 20 g/L and Na5P3O10 9.3 g/L.
Introduction Titanium and its alloy have become important medical materials for the human body hard organization to repair and/or replace, because they provides smaller elastic modulus close to the bone tissue of body, good chemical stability, corrosion resistance, and excellent biological compatibility, in addition to relatively low costs for fabrication[1-3].
The hydroxyapatite (HA) is an inorganic material which can be chemically connected with the bone tissue. it has been thought as the best bioceramics in biological compatibility at present[4].The hydroxyapatite coating can be deposited directly on the surface of titanium alloy through such processes as laser melting or sol-gel method，but theses hydroxyapatite decompose easily and integraty with the substrate is poor.
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Dong, et al, Development of an Ultra-low Carbon Bainitic Steel with Resistance to Marine Corrosion , Journal of Northeastern University(Natural Science).32 (2011) 250-253. ,[] S.T.
Song, et al, Properties and homogeneity of 550 MPa grade TMCP steel for ship hull, International Journal of Minerals, Metallurgy and Materials. 17 (2010) 179-184 ].
ZHI, et al, Microstructure and Toughness of Coarse Gained Region in X80 Pipeline Steel During Double Welding Thermal Cycle, Materials for Mechanical Engineering. 29 (2005) 49-52. ].
Orain, Morphological aspects of martensite-austenite constituents in intercritical and coarse grain heat affected zones of structural steels, Materials Science & Engineering A. 385 (2004) 352-358
Subramanian, et al, Structure-Property-Fracture Mechanism Correlation in Heat-Affected Zone of X100 Ferrite-Bainite Pipeline Steel, Metallurgical and Materials Transactions E. 2 (2015) 1-11. ].

Numerical Analysis of reinforced concrete bridge panel fatigue based on Midas Dawei Zheng1,a, Yuhui Zhang1,b,Guanghua Li 1,c,Xu Zhang1,d,Lin Liu2,e 1Liaoning Technical University, Institute of Civil Engineering and Transportation, Liaoning Fuxin, 123000, China; 2Liaoning Technical University, Institute of Safety Science and Engineering, Liaoning Fuxin, 123000, China.
With the increasing of traffic volume , vehicle load level is increasing day by day ,and the solution that repeated load is damaging to structural materials is serious increasingly .Structure material will generate the brittle failure , which is lower than static load strength , the fatigue damage .
Fatigue constitutive relation of material Fatigue constitutive relation of concrete.
Fatigue Behavior and Post-damaged Equivalent Constitutive Law of Plain Concrete [J].Journal of Building Materials(in Chinese), 2005,8(6): 609-614
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Adopting materials of sand, plaster, CaCO3, water, etc, and mixed with appropriate ratio, to simulate corresponding rock, and built the similar material model [3].
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Thirdly, diversity among materials parameters.
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Acknowledgements The authors are grateful to the National Science of the Republic of China for the support of this research under NSC 99-2218-E-009-026.
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The End The cutting-press compound shaping technology has obvious technical advantages in machining fins on the materials with better plasticity and toughness such as copper, aluminum etc, and it is a green technology for manufacturing fin tubes rapidly.
Tanasawa: Journal of Enhanced Heat Transfer, Vol. 12 (8) (2001), p.215
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References [1] Ke Wang: submitted to Journal of Machine Tool Electric Apparatus (2009).In Chinese
[2] Qun He, Zhuaner Liu, Xinyi Wang: submitted to Journal Metrology & Measurement Technology (1996).in Chinese
Development of the plate flatness measurement system: in Qingdao University of Science &Technology.
[5]Yang Xiumin , Liu Hao, Guan Peng and Zhang Lei, in: Advanced Materials Research , Frontiers of Manufacturing Science and Measuring Technology(2011)
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Introduction Many service failtures occur due to the engineering materials and structures existence of cracks.
Acknowledgements Financial supports for this study provided by the Guangxi Lab Center of Science and Technology (LGZX201002) is gratefully acknowledged.
Transverse singular effects in V-shaped notches stressed in mode II [J] International Journal of Fracture, 2010, 164(1): 1-14
Chinese Journal of Computational Mechanics, 2009, 26(1): 33-39.
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