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Experimental part Materials.
BE2013072, Natural Science Foundation of the Jiangsu Higher Education Institutions of China under grant No. 12KJB130002, Jiangsu Provincial Natural Science Foundation of China under grant No.
Fiber diameter in electrospinning process, Journal of Electrostatics , 71(2013) 189-198 [3] N.
Electrospinning of multilevel structured functional micro-/nanofibers and their applications, Journal of Materials Chemistry A,1(2013), 7290-7305 [6] D.
Wendorff, Functional materials by electrospinning of polymers, Prog Polym Sci, 38(2013) 963-991    [8] V.Pillay, C.

Research on the Precision Machining on SiC Qiang Xiao Xueli He 1.School of Mechanical and Electronic Engineering, Xi’an Technological University, Xi’an,710032, China； 2.School of computer science, Shannxi Normal University， Shannxi ，Xi’an， 710062，China xiaoqiang@xatu.edu.cn Keywords: surface quality; mechanism; precision machining Abstract: SiC material removal mechanism and ELID grinding mechanism is analyzed, the character and condition of brittle to ductile transition of SiC single crystal, the critical depth of cut, and surface formation mechanism of ductile mode grinding of SiC single crystal are studied, the experiment results show that ELID grinding can realize ductile grinding ,this will lower the surface damage and improve the machining efficiency.
Introduction Fig.1 SiC Single crystal With the rapid development of technology, SiC single crystal become a important third generation of semiconductor materials, shown in Figure 1,because of its superior attributes, such as wide band-gap, high-breakdown electric field strength, high-saturated drift velocity, high thermal conductivity, low coefficient of thermal expansion, strength at elevated temperatures.
Material removal mechanism Material removal methods are generally two kinds of brittle fracture and plastic removal, shown in Figure 2, Figure 3，Figure 4.
Therefore, the dissolution of bond material increases and the exposure of diamond grains restart.
References [1] Xiao Q, Research on the Material Removal Rates and Surface Features of SiC Single Crystal by Ultrasonic Polishing[J], Journal of Synthetic Crystals, Vol.40, No.4, August,2011, 496-199 [2] Li Y,Wang X Y, Experiments of Ultrasonic-assisted Wire Sawing of SiC Single Crystal, Journal of Synthetic Crystals,Vol.41 No.4, August,2012, 1076-1081 [3] N.Itoh, Grinding Characteristics of Hard and Brittle Materials by Fine Grain Lapping Wheels with ELID, Journal of Materials Processing Technology 62(4)(1996)315–320

Rusop, Ultraviolet sensing mechanism and characteristics of environmentally friendly aligned aluminium doped zinc oxide nanorod arrays prepared using low cost solution growth method, Materials Research Innovations (2011) s148
Rusop, Influence of doping concentrations on the aluminum doped zinc oxide thin films properties for ultraviolet photoconductive sensor applications, Optical Materials (2010) 696-699
Rusop, Fabrication of thin, dense and small-diameter zinc oxide nanorod array-based ultraviolet photoconductive sensors with high sensitivity by catalyst-free radio frequency magnetron sputtering, Materials Letters (2013) 215-218
Basak, Effect of substrate-induced strain on the morphological, electrical, optical and photoconductive properties of RF magnetron sputtered ZnO thin films, Materials Research Bulletin (2011) 1039-1044
Hang, Al-doping effects on structure, electrical and optical properties of c-axis-orientated ZnO:Al thin films, Materials Science in Semiconductor Processing (2006) 132-135

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Journal of Beijing University of Aeronautics and Astronautics, 2006, 32 (10):1255-1258
Continuous basalt fiber and composite materials.
Tianjin Textile Science and Technology, 2007 (3) :21-25 [8]Lin Yumei.Containing ZrO2, TiO2 fiber glass alkali-resistant mechanism.
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Introduction In general, nanoporous materials, such as zeolites, are usually utilized in adsorption, separation, ion-exchange heterogeneous catalysis and other desired functions.
Zeolites are microporous crystalline materials with an inorganic, three dimensional host structure comprised of fully linked, corner-sharing tetrahedron.
Fig. 1 Silicalite-1 Fig. 2 Schematic view of molecular spring isolator In present, researches on molecular spring are mainly concentrated on synthesizing new materials [6] or molecular simulations of water adsorption in zeolites [7].
References [1] C.Suciu, T.Iwatsubo: Investigation of a colloidal damper, Journal of Colloidal and Interface Science, Vol. 259, pp. 62-80. (2001) [2] A.Fadeev, V.Eroshenko: Study of penetration of water into hydrophobized porous silicas , Journal of Colloid and Interface Science, Vol.187, pp. 275-282. (1997) [3] M.Trzpit, S.Rigolet and J.Paillaud: Pure silica chabazite molecular spring: a structural study on water intrusion-extrusion processes, Journal of Physical Chemistry,Vol.112, pp.7257-7266. (2008) [4] V.Eroshenko, R.Regis and M.Soulard, et al.: Energetic: a new field of application of hydrophobic zeolites, Journal of The American Chemical Society, Vol.123, pp. 8129-8130. (2001) [5] M.Soulard, J.Patarin and V.Eroshenko, et al.: Molecular spring or bumper: a new application for hydrophobic zeolites materials, Studies in Surface Science and Catalysis, Vol.154, pp. 1830-1837. (2004) [6] L.Tzanis, M.Trzpit and M.Soulard, et al.: High pressure water intrusion investigation of pure
silica 1D channel AFI, MTW and TON-type zeolites, Microporous and Mesoporous Materials, Vol.146, pp. 119-126. (2011) [7] N.Desbiens, A.Boutin and I.Demachy: Water condensation in hydrophobic silicalite-1 zeolite: a molecular simulation study, Journal of Physical Chemistry, Vol.109, pp. 24071-24076. (2005) [8] F.T.Zhang: Fundamentals of Molecular Interface Chemistry, first ed., Shanghai Scientific and Technological Literature Press, Shanghai, 2006

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In section 2, the materials and experimental procedure used in this study are summarized.
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Introduction Titanium alloys are known as difficult-to-machine materials, especially at dry machining, due to their several inherent properties[1-3].
At lastly, metals which are more adhesive tend to exhibit more ductility at elevated temperatures, thereby leading to possible cold-welding between the abrasive grits and workpiece materials.
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