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EDM is a special machining method that is used to remove metal materials by electric and heat energy.
At present, machining of non-conductive material generally uses high-voltage EDM and assistant electrode method to remove materials [4].
At one time, since output capacitance C4 plays the role of energy storage, more explosive power is produced when broken voltage is 120v, which can better help to remove materials.
Acknowledgement This paper is supported by the National Science Foundation of China (50674099).
Journal of Materials Processing Technology, Vol.154 (2004), pp. 1033-1038

Introduction The use of porous materials has a great potential for realizing lightweight structural components due to their low density.
For the more widespread use of porous materials in structural components, improvement in the strength–mass relationship is a crucial technical target because porous structures tend to be accompanied by low specific strength.
In the sandwich-structured composite, nonporous material layer such as thin sheet is fabricated on surface of porous material.
Utsunomiya, Fabrication of skin layer on aluminum foam surface by friction stir incremental forming and its mechanical properties, Journal of Materials Processing Technology, 218 (2015) 23-31
Wiegmann, Young’s modulus and thermal conductivity of model materials with convex or concave pores – from analytical predictions to numerical results, Journal of the Europian Ceramic Society, 38-7 (2018) 2694-2707

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By selecting these two materials ensure good strength, longevity and better performance.
Advantages include faster finish times, no need for extra materials or knowledge, and a more pleasing outcome.
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As such, the slag-based MTC technology of cementitious materials came into being [2].
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Effect of Tungsten Addition on Properties of Ni-based Alloy Sheet Prepared by EB-PVD Guang-Ping SONG1,a, Xiao-Dong HE1, Yue SUN 1 and Ming-Wei LI2 1 Center for Composite Materials and Structure, Harbin Institute of Technology, Harbin China 2 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China a gpsong555@hit.edu.cn Keywords: EB-PVD; W addition; Ni-based alloy; Microstructure; Mechanical property.
Introduction The 1930s marked the start of application of electron beam evaporation and subsequent electron beam physical vapor deposition (EB-PVD) in vacuum to prepare thin films of various materials for optics and microelectronics.
At the beginning of the 1960s, some institutions started conducting systematic research on equipment and technology of producing sheets (1-2mm) and bulk condensates of inorganic materials by electron beam [1,2].
EB-PVD, with refractory element addition in melting pool, offers a key to increase deposition rate and control composition for these demanding new materials [6,7].
References [1] R.F.Bunshah: Zeitschrift fuer Metallkunde vol.75 (1984), p. 840 [2] M.L.Blosser, R.R.Chen：Journal of Spacecraft and Rockets Vol.41 (2004), p. 183 [3] Bi, Xiaofang, Lan, Weihua: Journal of Magnetism and Magnetic Materials vol.261 (2003), p. 166 [4] Shi Li-ping, He Xiao-Dong: Journal of Central South University of Technology (English Edition) vol.12 (2005), p. 27 [5] Wolfe, Douglas E.

One method is the addition of reinforcing particles to the matrix materials directly, which can be named as ex situ methods.
Experimental Materials and Processing.
Specimens for SEM observations were taken from the as-cast materials.
NH4AlO(OH)HCO3 is known to be one of the raw materials for fabricating commercial high-purity superfine Al2O3 [5,6].
Li: Journal of Henan University of Science and Technology Vol. 26 (2005), p. 1 [6] G.F.