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Introduction Piezoelectric ceramics are one kind of important functional materials and widely used in electronic, optical, thermal, acoustical fields.
The impedance values and resonance frequency of piezoelectric materials could be obtained by the apparatus.
The latter is to read free capacitance of piezoelectric materials, so as to set the boundary of piezoelectric body in a free state.
The values are close to each other becasue they belong to the same material.
Journal of Micromechanics and Microengineering, vol.20 (2010) 115019 [4] M.

Microstructure and Tensile Properties of Oxide Dispersion Strengthened Molybdenum Alloys prepared by different doping process Yuanjun SUN, Guojun ZHANGa,Chao ZUO, Jianfeng WEI and Jun SUN State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P.
Refractory Metals & Hard Materials Vol.18 (2000), p. 205 [3] R.
Refractory Metals & Hard Materials Vol.17(1999), p. 405 [5] B.
Cockeram: Metallurgical and Materials Transactions Vol.33A (2002), p.3685 [6] T.
Sun, et al.: Advanced Engineering Materials, Vol.6 (2004), p.943 [8] A.

The reason is that the thermal conductivity of the air is λ=0.022 kcal/mh℃, which is the lowest value among the common materials and the lower thermal conductivity of the air resulted in less thermal transfer through the natural convection including radiation.
Overall, the thermal conductivity tends to decrease as the foam ratio increases; however experimental errors are considered to have occurred because of the interruption between the gaps due to the cohesion of some materials and several collapsed gaps while infilling after mixing.
Paulo Monteiro, Concrete: Microstructure, Properties, and materials, McGraw-Hill, San Francisco, 49-67. (2004) [9] W.
London:Applied Science,113. (1973) [11] T.
Ashworth, RS Graves, DC Wysocki, Insulation Materials: Testing and Applications.

Experimental Materials.
For the low metamorphic grade materials with more heterocyclic, alkyl side chains and functional groups, the influence of HNO3-NaOH modification method is more effective.
Lewis, The influence of iron on the precipitation behavior of nickel powder, Chemical Engineering Science. 14 (2007) 3756-3766
Tanaka, Analysis of continuous solvent extraction of nickel from spent electroless nickel plating baths by a mixer-settler, Hazardous Materials. 2 (2009) 1228-1235
Jr, Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water, Hazardous Materials. 2 (2006) 762-811

Materials show different fracture behavior under dynamic load from that in static load.
Moreover, a singularity stress field is formed in the part around defects when the defect like the crack exists in the material, and a rapid decrease in material strength is caused.
As a light metal material which substitutes it for the resin material it not to be possible to follow to the flow of thin, light and small products in respect of the rigidity in the consumer electronic field recently, and lightness and the high strength material such as magnesium alloys try to be used widely.
S.Takahashi, T.Shimizu, Science of Machine, 37-4 (1985), p485-490 2.
T.Shimizu, H.Shimada, JOURNAL of JSNDI 31-4 (1980), p125-133 0 10 20 30 40 50 60 70 80 90 0 1 2 3 4 5 crack angle(degree) KI (MPa࡮m^1/2) ٤� static� �� �� �� � ٨� dynamic 0q 45q 90q 90q Fig.8.

Ultrasonic vibration turning possess the advantages of small cutting force, high efficiency, high machining accuracy, high surface precision and long tool life [10], so it applies to precision machining and ultra precision processing of difficult machining materials such as hardened steel.
Materials and Experimental procedures Materials.
The main cause of residual compressive stress induced in turning process was a large plastic deformation produced in materials surface , which PCBN cutter flank Repeatedly pressed on GCr15 bearing steel and negative chamfer and Obtuse parts of cutter extruded material in front of cutter .
The springback amount of GCr15 surface materials reduces with deformation increasing, so the ironing effect weakened when ultrasonic turning GCr15 bearing steel.
ASME, Vol.122 (2000) , pp.642–649 [8] Meng Liu, Jun-ichiro Takagi, Akira Tsukuda: Journal of Materials Processing Technology, Vol.150(2004) No. 3,pp. 234-241 [9] S.R.

Costa1e 1Federal University of Campina Grande, Department of Materials Engineering, Campina Grande - PB, Brazil. 2Federal University of São Carlos, Department of Materials Engineering, São Carlos - SP, Brazil 3University of São Paulo, Institute of Physics, Sao Paulo - SP, Brazil adeboralbq@hotmail.com, bveroniacristhina@hotmail.com, cruth@power.ufscar.br, dcornejo@if.usp.br, eanacristina@dema.ufcg.edu.br Keywords: Ni-Zn ferrite, combustion reaction, microwave oven Abstract: This paper reports the preparation of ferrite Ni0,5Zn0,5Fe2O4 by combustion reaction in a microwave oven, and its structural, morphological and magnetic characterization.
The microwave-induced combustion synthesis of processing of materials differs fundamentally from the conventional processing in the heat mechanism.
The samples produced with glycine showed characteristics of soft magnetic materials, this behavior, which was assigned values due to remanent magnetization (Mr) and coercivity (Hc) small but different from zero, thus showing the complete formation of the narrow magnetic hysteresis loop.
Nugroho: submitted to Journal of Magnetism and Magnetic Materials (doi:10.1016/j.jmmm. 2011.07.050)
Costa, Synthesis for combustion reaction, sintering and ferrites characterization Ni–Zn, Doctorate Thesis in Materials Science and Engineering, UFSCar, Brazil, 2002

Introduction Phase Change Materials (PCMs) are latent heat storage materials.
PCM are effective, they store 5 to 14 times more heat per unit volume than conventional storage materials such as water, masonry, or rock.
Haghighat et al.: Journal of Materials in Civil Engineering Vol. 10(1998), p. 98–105
Hawes et al.: Solar Energy Materials and Solar Cells Vol. 22(1991), p. 231–42.G
Gschwander et al.: Solar Energy Materials and Solar Cells Vol. 89(2005), p. 297–306

Experimental Materials, mix design and concrete mixing .
Role of Cement Science in Sustainable Development, Ed.
Khatib, Sustainability of building materials.
Woodhead Publishing in Materials, Cambridge, 2009
Mun, Development and test of lightweight aggregate using sewage sludge for nonstructural concrete, Construction & Building Materials 21 (2007) 1583-1588

Ushioda2 1 Department of Materials Science, Osaka Prefecture University, Sakai 599-8531, Japan 2 Steel Research Laboratories, Research and Engineering Center, Nippon Steel Corporation, Futtsu 293-8511, Japan a honda.kj.09@mtr.osakafu-u.ac.jp, b numakura@mtr.osakafu-u.ac.jp (corresponding author) Keywords: dual-phase steel, Snoek relaxation, carbon, iron, ferrite, martensite Abstract.
Such effects of alloying elements are to be studied next, after building the method with simple unalloyed materials.
Composition, equilibration temperature and phase constitution of the materials.
Kinra (Eds.), M3D III: Mechanics and Mechanisms of Material Damping, ASTM STP 1304, American Society for Testing and Materials, West Conshohocken, PA, 1997, pp. 383-393
Massalski (Ed.), Binary Alloy Phase Diagrams, Second ed., ASM International, Vol. 1, Materials Park, OH, 1990, pp. 842-848