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The micro-morphologies of the 4 kinds of metallic materials before and after wear are obtained by utilizing JSM-5600LV SEM to obtain, as shown in Figure 1, 2.
Results and Analysis As seen in Tab.1, it’s the multi-fractal parameters obtained by calculating the SEM image before and after 4 kinds of metallic materials that are worn.
The order of the size on spectral width before and after wear is all HT200>45# steel>9SiCr>3Cr13, which is consistent with the trend of volume wear of 4 kinds of materials.
Depending on the analysis of spectral width, the roughness degree of surface height and the change of spectral width are consistent before wear for the 4 kinds of materials.
Journal of Materials Science Letters, 1996, 15: 1288-1290 [3] Zhou G Y.

The materials of a grain and the boundary are different, resulting in different material properties.
Under the same machining conditions, The average value of TWR of different workpiece materials are different too.
Xu in School of Materials Science and Engineering, Dalian University of Technology, are also acknowledged for their assistance in material sample preparation, processing and metallographic analysis.
Chen, “Research on the microstructure and properties of weld repairs in TA15 titanium alloy,” Materials Science and Engineering A, 2007, 445- 446:691- 696
C., “Thermal Conductivity Bounds for Isotropic, Porous Materials,” International Journal of Heat and Mass Transfer, 2005,48:2150- 2158.

Decision matrix for insulting materials No.
Materials & Design, Vol. 37 (2012), p. 317-324
Materials & Design, Vol. 47 (2013), p. 643-652
China Safety Science Journal, Vol. 20 (2010), p. 124-129
Journal of Hunan University (Social Sciences), Vol. 22 (2008), p. 68-72

Green building materials Concept.
Green building materials is also called ecological building materials.
Compared with traditional building materials, green building materials has the following characteristics and advantages: i.
Cai: New Building Materials, (2006) No.1, p.40.
Ding: Soybean Science, Vol. 28 (2009) No.4, p.715

Design and Analysis of a XY Micro-motion Stage Based on S Type Flexible Mechanism Yuemin Yu College of Science ,Heilongjiang University of Science and Technology,Harbin, 150022,China yuym2012@126.com Keywords: Micro-motion stage , Smart materials, Piezoelectric ceramic stack Abstract.
Piezoelectric materials is a kind of the most common smart materials whose geometric shape can be related to an energy input in the form of electric field.
Journal of Tianjin Vocational Technical Teachers' college, 41 (1), 1-5(2002) [3] Yu Yuemin, Ji Xiansheng Design and analysis of a micro-gripper based on smart materials [J].
Journal of Materials Processing Technology, 2005, 164(5): 1584-1589
Journal of Heilongjiang Institute of Science & Technology, Vols. 23(6):591-595 (2013)

Bahavior of Composite Materials to Withstand Impact and Compressive Design Allowables Zhen Shen1 Shengchun Yang1 Puhui Chen2 1 Aircraft Strength Research Institute of China, Xi'an, 710065 , China 2 Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China 1 shenzhen623@yahoo.com.cn 1shengchunyang@yahoo.com.cn 2phchen@pub.xaonline.com Keywords: Composite Materials; Material Evaluation; Damage tolerance; Damage Resistance; CAI Abstract.
Introduction CAI(Compression After Impact) values obtained by NASA (or SACMA) test standards usually are used as the very important index for material scientists to develop new composite systems and aircraft designers to select materials.
During the past 20 years CAI has been used to evaluate the behavior of composite materials to withstand impact.
Preliminary study on evaluation system of composite materials to withstand impact Recently Authors [2-5] carried out a lot of experimental study on the evaluation system of composite materials to withstand impact.
To be published in Journal of Composite Structures Vol 75, 2006 [5] Z.Shen, P.H.Chen, S.C.Yang.

The synthesis of Lithium Aluminate materials and its performance of CO2 absorption Yinjie Wanga, Jiping Liub , Meixiu Kanc and Zequan Liud School of Material Science and Engineering, Beijing Institute of Technology, Beijing, China, 100081 awangyinjie@pku.org.cn, bliujp@bit.edu.cn,kanmeixiu@126.com,dliuzq1988@foxmail.com Key words : Lithium aluminate ; Absorption; Carbon dioxide Abstract.
In this paper, we use Nanoscale α-Al2O3 as raw materials to prepare the Lithium aluminate (Li5AlO4), and explored the impacts of Li5AlO4 materials CO2 absorption from the factors of material structure and surface morphology etc.
The preparation of Li5AlO4 Li5AlO4 materials were synthesized by high temperature solid-state method.
The materials’ structures are similar with the PDF card 72-0792.
Yamaguchi T., Niitsuma T., Lithium silicate based membranes for high temperature CO2 separation, Journal of Membrane Science, 2007, 294: 16-21()

The high quality and functional green building materials can therefore be easily fabricated.
Introduction Green building materials are composed of renewable, rather than nonrenewable resources.
Those materials such alumina (Al2O3) and titania (TiO2) there are candidate materials of energy and green building materials.
The inorganic materials of alumina titania (TiO2) are basic materials used in the modern building for example, harder Al2O3 tile and photocatalyst of TiO2 film.
Diau, Journal of The Electrochemical Society, Vol. 156 (2009), p.

Long-term durability of advanced polymeric materials in hygrothermal environments is of vital concern.
Pioneering work [1-6] has been conducted on diffusion and viscoelastic deformation in polymeric materials.
The effective time theory to predict long-term behavior of polymeric materials experiencing physical aging from short-term experiments [13] is analogous to the method of reduced variables for thermorheologically simple materials [7], both of which may be described with the concept of a material clock [8].
Elahi: Mechanics of Time-Dependent Materials Vol. 4 (2000), p. 107
Hodge: Science Vol. 267 (1995), p. 1945

Introduction Viscoelastic materials, as an important category of engineering application materials, had been widely studied.
Experimental Materials and Equipment.
Zhang, Evaluation of the Properties of Polyaspartic Polyurea Coated Concrete Subjected to the Co-Action of Freeze-Thaw Cycles and NaCl Solution Immersion, Materials Science Forum, (2011)
Ma, Anti-corrosion Performance of Qtech-413 Viscoelastic Protective Materials Used as Coating for Light Rail Concrete Beam, Corrosion science and protection technology, 29 (2017) 261-264
Yang, Topological Sensitivity Method for the Optimal Placement of Unconstrained Damping Materials under Dynamic Response Constraints, Journal of Shanghai Jiaotong University, 37 (2003) 1208-1209.