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Electro-discharge machining (EDM) is a non-conventional process that removes superfluous materials by thermal erosion mechanisms such as melting and vaporizing.
Acknowledgements The work was supported by the Shandong Province Natural Science Foundation(ZR2009FQ030).
Luis:A study on the machining parameters optimization of electrical discharge machining, Journal of Materials Processing Technology, Vol.143-144 (2003), p.521 [3] C.J.
Villa:Material removal rate and electrode wear study on the EDM of silicon carbide, Journal of Materials Processing Technology, Vol.164-165 (2005),p.889 [4] W.S.
Wei:Ultrasonic and electrical discharge machining to deep and small hole on titanium alloy, Journal of Materials Processing Technology Vol.20 (2002), p.101

Thus the skin panels may experience extreme structural problems such as thermal post-buckling, flutter, delamination and fatigue failure for conventional composite materials.
Therefore Functionally Graded Materials (FGMs) have been developed to overcome these kinds of drawbacks.
The materials are generally composed of ceramics and metals whose volume fractions continuously change from one to the other, resulting in corresponding changes in the material properties.
Thus FGMs have simultaneously the merits of two materials.
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Wang, Journal of Magnetism and Magnetic Materials (2013)
Goel, Journal of materials science 41 (21), 7190-7196 (2006)
Morkoç, Journal of Materials Science: Materials in Electronics 20 (9), 789-834 (2009)
Pająk, Journal of Achievements in Materials and Manufacturing Engineering 17 (1-2) (2006)
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The static absorption capacity of ammonia nitrogen on Silicon based compound filter material can be as high as 149.9048 mg/g, it’s the interactive effect of silica based compound filter material physical adsorption and single molecule layer absorption.
The silicon-based compound filter material of ammonia nitrogen removal function is coordinated completion of the physical adsorption and monolayer adsorption. 2.The silicon-based compound filter material A/O biological filter on wastewater nitrogen removal is microbial degradation under the action of combined silicon based composite material ion exchange properties and adsorption effect together.
Acknowledgements This work was funded by the National Scientific Foundation China (NSFC51178207), Shandong Provincial National Science Foundation (ZR2011EEM003), the Natural Science Foundation of Shandong Province (ZR2012EEL21）.
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Micro-EDM need complicated preparation and can use only limited materials with low efficiency.
Inoue [20] launched studies on micro-extrusion of new materials.
Lawrence Yao: Journal of Manufacturing Science and Engineering vol. 124 (2002), p. 369-378
Eckstein: Journal of Materials Processing Technology vol. 103 (2002), p. 35-44
Lawrence Yao, Wenwu Zhang: Journal of Manufacturing Science and Engineering vol. 124 (2002), p. 369-378

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Journal of Applied Polymer Science (2012) 1967
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Therefore, the converter slag can be used as a part of the sintering raw materials.
These features are beneficial to improve the sinter quality and reduce the consumption of sintering raw materials.
Therefore, that the dephosphorization of steel slag as the sintering raw materials was studied during the sintering process was of great value.
Journal of Materials and Metallurgy, 2003,2(3): 167-172(In Chinese)
Laigang Science & Technology, 2009(5): 62-63(In Chinese).

The flow behaviour of the investigated materials is used to explain the results of the machining experiments.
Furthermore, experiments have shown a significant increase of micro hardness, strength, resistance to friction wear and fatigue endurance limit of materials with a nanostructured surface layer [4].
These differences between the two materials and their modelled flow stress can be justified on two grounds: Armco-Iron has a high level of purity and is very ductile.
This clear difference of the geometrical changes of the materials supports the results of the flow stresses (Fig. 3).
Vöhringer, Influence of Alloying Elements on the Strain Rate and Temperature Dependence of the Flow Stress of Steels, in: Metallurgical and Materials Transactions A, 31:825-830, 2000

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