Search results

Damping Behavior of the High Strength Aluminum Alloy Prepared by Rapid Solidification and Powder Metallurgy Process Haitao Zhao 1, a , Junchen Yao 1, b, Yue Ma 1, c , Huibin Xu 1, d 1 School of Materials Science and Engineering, Beihang University, Beijing, 100083, China a geniemazhtao@sina100.com.cn, cmayue@buaa.edu.cn Keywords: metal matrix composite; damping capacity; rapid solidification and powder metallurgy process.
Introduction The application of high damping materials is of practical engineering importance in attenuating the amplitude of vibration at resonance conditions and reducing the probability of fatigue failure.
Compared to traditional processing technologies, MMC provided a unique approach to design and prepare materials with excellent combination of mechanical property and other useful properties.
Dai: Material Science & Technology Vol.7 sup (1999), P. 91-95 [2] P.Y.LI, S.L.
Dai: Journal of Aeronautical Materials Vol.20, No.3 (2000), P.164-171 [3] J.

Zeolites are solid crystalline microporous materials with large surface area and strong acid sites.
Since zeolites only have few surface silanol groups, it is quite difficult to introduce functional groups into the materials.
They found that it was possible to synthesise wellordered MCM-41 materials bearing alkyl sulfonic groups and tune the pore size by changing the alkyl chain length [5].
Materials and methods Raw Materials Glucose and LA used for calibration with the purity of over 99% were obtained from Aladdin Reagent (Shanghai, China).
Journal of Natural Gas Chemistry, Vol 21(2012), pp.138-147 [5] Reddy B M, Patil M K.

Velocity Temperature Characteristics of Time Domain Reflectometry Cable Length Measurement System Jianhui Song1,a, Liang Chen1,b 1 School of Information Science and Engineering, Shenyang Ligong University, Shenyang, 110159, P.
The factors conclude electrical conductor material, insulation materials, electrical conductor diameter, insulation diameter, ambient temperature, signal frequency and the cable crimp levels[1].
Considering the expression of the cable capacitance per unit length, it can be seen that the cable capacitance per unit length is proportional to the dielectric constant and insulating materials.
Therefore, the velocity should be specific analyzed according to different insulating materials and different ambient temperature.
Journal of Plant Nutrition and Soil Science Vol. 172 (2009), p. 186 [3] C.Y.O.

Moreover, it can be easily stuck on the surface of rock materials by 502 glue and has the same mechanical properties as brittle rock materials.
So it is pretty suitable for the testing of rock materials.
Because it is basically matched with the mechanical properties of rock materials, when the rock fracture occurred, pencil core sensors have relatively less hysteresis effect, in addition, lower cost. 3.
ASTM STP601, American Society for Testing and Materials, 1976, 234~244
[2] Chen Jingxi, Analysis of Correlation Factors between Stress Wave and Rock Fracture, Chinese Journal of Rock Mechanics and Engineering, 1997, 16(2): 148~ 154.

NoⅠraw material dapparent is between 0.8~1.1(changing with raw material’s quality and precursor particle size).Improving baking temperature and time will crystalize and aggregate the raw materials in stove, so dapparent will change.
Acknowledgements The national natural science foundation of china(30972399) ; "Eleventh Five-Year" plan supported by key project of National Science and Technology (2009BADB1B0304-5); Scientific research financial project aided by education department of Hunan Province (09C1017).
References [1] Lionel Vayssieves, Anders Hagfelde, Sten Eric Lirdduist .Purpose-built metal oxide nanomaterials: The emergence of a new generation of smart materials[J].Pure Appl.
[6] ZHOU Jian, X IAO Xue-qin, XU Wu-bin.Study of lithium ion positive pole material LiNiO2 [J].
Journal of Guang Xi university of technology,2005,Vol. 16, No.4:44-46,56

., Brazil, 3 Center of Natural and Human Sciences, Universidade Federal do ABC, CEP 09.210-170, Santo André, SP., Brazil.
Materials and Methods Biogenic synthesis of silver nanoparticles (Bio-AgNP): Stable silver nanoparticles were formed by treating an aqueous solution of AgNO3 with Fusarium oxysporum conditioning medium as reducing agent of Ag+ to Ag0.
Durán, Nitric oxide-releasing vehicles for biomedical applications, Journal of Materials Chemistry. 20 (2010) 1624-1637
Yau, Potential of plant as a biological factory to synthesize gold and silver nanoparticles and their applications, Reviws in Environmental Science and Bio-technology. 11 (2012) 169-206
International Journal of Nanomedicine. 6 (2011) 2705-2714

Materials and Methods Chemicals.
References [1] Yu Fei, Li Yong, Han Sheng, Ma Jie, Adsorptive removal of ciprofloxacin by sodium alginate/graphene oxide composite beads from aqueous solution, Journal of Colloid and Interface Science. 484(2016) 196-204
Adebowale, Microscale scavenging of pentachlorophenol in water using amine and tripolyphosphate-grafted SBA-15 silica: Batch and modeling studies, Journal of Environmental Management. 146 (2014) 42-49
Celzard, Adsorption of phenol onto activated carbons having different textural and surface properties, Microporous and Mesoporous Materials.111 (2008) 276–284 [7] Bamidele I.
Adebowale, Evaluation of pyrene sorption-desorption on tropical soils, Journal of Environmental Management.137 (2014) 1-9.

Experimental Method and FEM Materials of the specimens Impact behaviors of Aluminum Honeycombs Sandwich Panel (AHSP) by drop weight test are investigated in this part.
,"Damage Characteristic and Residual Strength of Composite Sandwich Panels Impacted with and without a Compression Loading", Materials Conference and Exhibit and AI AA/ASME/AHS Adaptive atructures Forum - PART 1, pp. 713-723, 1998 2.
Kyriakides., "Experiments and Full-Scale Numerical Simulations of In-Plane Crushing of a Honebcomb," Elsevier Science, Vol. 46, pp. 2765-2776, 1997 5.
,"Basic two-dimensional core types for sandwich structures,"International Journal of Mechanical Science, Vol. 42, pp. 657-679, 2000 7.
,"An Experimental Study of Energy Absorption in Impact on Sandwich plates" International Journal of Impact Engineering, Vol. 12, No.2, pp. 241-262, 1992

Results and Discussion Effect of Na2CO3 on NOx emission Sodium is one of the mineral materials in coke, which had suppressive effect on the NOx formation in coke combustion [8].
Fig.4 Effects of magnesium-based materials on NOx emission during coke combustion Fig.3 Effects of calcium-based materials on NOx emission during coke combustion Effect of magnesium-based additives on NOx emission NOx emissions in the combustion of coke loading magnesium-based additives were shown in Fig.4.
During the process of coke combustion, NOx is mainly reduced to N2 by the burning coke and CO gas generated in the combustion, some mineral materials, such as Na and Ca, contained in the coke, play a catalytic role for NOx reduction reactions.
Acknowledgements This work was financially supported by National Natural Science Foundation of China (No.51204057), National Postdoctoral Science Foundation of China (No.2012M510918), Science Foundation for Young Scholars of Heilongjiang Province of China (QC2011C034), Foundation for Key Teacher of Universities by Heilongjiang Province of China (1252G007) and Project of Science and Technology of Heilongjiang Province of China (No.12521054).
Xie, Journal of Fuel chemistry and technology, Vol.30(2002), p408 (in Chinese) [9] A.

China 2Key Laboratory of Fundamental Science of Mechanical Structure and Material Science under Extreme Condition for National Defense of Yanshan University, Qinhuangdao, 066004, P.R.
Experiment Materials.
Huang: Materials Science and Engineering. 458(2007), p. 158-169
[6] Lixin Zhao, Liyun Zheng and Shu guo Zhao: Materials Letters. 60(2006), p. 2590-2593
Chang: Applied Science and Manufacturing. 35(2004), p. 1385-1392