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The resistivity of contraction resistance and material contact parts is directly proportional to the actual number of spots, conductive contact parts of the contact is decided by the hardness of materials. 
Under normal circumstances, when the con-tact parts by current heating, the temperature will rise, the resistivity of conductive materials will be increased, but also the hardness will decrease, so that the contact area increases effective contact point. 
[3] Schade E．Physics of high-current interruption of vacuum circuit breakers[J]．IEEE Trans.on Plasma Science，2005，33(5I)：1564-1575
[6] Shang G D W．High-speed observations of arc modes and material erosion on RMF-and AMF-contact electrodes[J]．IEEE Trans.on Plasma Science，2005，33(5I)：1605-1610
[7] Xiu S，Cheng Y，Zhang R．Experimental investigation of vacuum arc characteristic under axial magnetic field[J]．Journal of Physics D：Applied Physics，2008，41(8)：085209

Chinese Journal of Aeronautics, 2011, 24: 369-377
Journal of Aircraft, 2007, 44: 323-329
International Journal of Mechanical Sciences, 2011, 53: 1039-1049
Mchanical Science and Technology, 2004, 4(23) : 434-436
International Journal of Material Forming, 2011, 4(1): 45-54.

Hamid3 1Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia 2Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia 3School of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia aangelachia2708@gmail.com, bw.s.chiu@um.edu.my Keywords: Hydrothermal, ZnO NRs, Photocatalytic Water Splitting Abstract.
Generally, semiconductor materials are use as photocatalyst due to the reason that their band gap are large enough to straddle electrochemical potentials for (H+/H2) and (O2/H2O) to drive hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) separately under illumination [2].
Materials and Methods The zinc oxide (ZnO) seeds is prepared by dissolving 5 mmol zinc acetate dihydrate (Zn(CH3CO2)2·2H2O) and equimolar diethanolamine (NH(CH2CH2OH)2) in ethanol and heated at 60°C for 1 hour.
, ECS Journal of Solid State Science and Technology, 3 (2014) P133-P137
Kamat, Understanding the Implication of Carrier Diffusion Length in Photovoltaic Cells, The Journal of Physical Chemistry Letters, 6 (2015) 4090-4092.

PHOTOLUMINESCENCE INVESTIGATION OF Dy3+ IONS IN Bi2O3-B2O3 GLASSES Smit Insiripong1,a , Kitipun Boonin2,b , Natthakridta Chanthima2,c, Jakrapong Kaewkhao2,a 1Physics Program, Faculty of Science and Technology, Muban Chombueng Rajabhat University, Ratchaburi 70150, Thailand 2Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand amink110@gmail.com , bkboonin@hotmail.com , cnatthakridta@gmail.com Keywords: Glasses, Bismuth Borate, Luminescence, Dy Abstract.
Appropriate amounts of the raw materials were thoroughly mixed and ground in a pestle and mortar for half an hour.
Rahman: Solid State Science Vol. 10 (3) (2008), p. 326
Krishna: Journal of Luminescence Vol. 132 (2012), p. 841
McGilp: Journal of Non-Crystal Solids Vol. 135 (1991), p. 8

Journal of Iron and Steel Research International, 2010 (17) 46-50
Journal of Iron and Steel Research International, 2012 (19) 73-78
Journal of University of Science and Technology Beijing, 2004 (11) 364-367
Journal of Iron and Steel Research International, 2007 (14) 277-281
Materials Science and Engineering A, 2003 (355) 126-136.

Experimental Methods Materials:Diammonium hydrogen phosphate (DAP) and urea were supplied by Sinopharm Chemical Reagent Co.
The XRD patterns for different raw materials ratios, in which the ratios of MEL/DAP are 0.167, 0.125, and 0.083, respectively, are shown in Fig. 1.
Journal of Applied Polymer Science.
Journal of Polymer Science, Vol. 16 (1978), p. 95
Journal of American Chemical Society, Vol. 91,(1969),p. 62

In the past few years, the catalytic amination reaction of arylene halides with primary amines using palladium complexes has become an important synthetic procedure for a variety of arylene amines including pharmaceuticals, electronic materials, and ligands for metal catalysts[8-9].
Fig. 1 shows the chemical structure and three-dimensional stereo structure of PSBIS repeated unit created by chemical office software and Materials Studio.
European Polymer Journal, Vol. 44 (2008), p. 2202 [2] S.C.
Journal of Membrane Science, Vol. 218 (2003), p. 11 [4] Kumbharkar SC, Kharul UK.
Journal of Membrane Science, Vol. 286 (2006), p. 161 [5] Lyoo WS, Choi JH, Han SS, Park MS, Ji BC.

For the beams made of the shape memory alloy materials, the assumption of small deformation no longer holds as it can produce deformation of large deflection [2].
Acknowledgements The authors would like to thank the support of the National Natural Science Foundation of China (Grant No. 51379113, 51375280), the Program for New Century Excellent Talents in University (NCET-12-1028) and the Natural Science Foundation of Shandong Province, China (Grant No.
Liu, Mechanics of materials, Higher Education Press, Beijing, 1992
Tang, Polynomial interpolation approximations of arbitrary continuous functions, Journal of Shandong Jianzhu University 22 (2007) 158-162.
Li, a survey of numerical method based on barycentric interpolation, Shandong Science 23 (2010), p.13.

Experimental Materials and Preparation.
Poelman: Journal of Materials Chemistry A: Materials for energy and sustainability Vol. 9 no. 34 (2021) p. 18026–18085 [7] Z.
Shen: Advanced Materials Vol. 30 no. 2 (2018) p. 1–6 [8] Y.
Chu et al.: Materials and Design Vol. 188 (2020) p. 108486 [11] M.
Bidsorkhi et al.: Materials Today Communications Vol. 11 no.

In addition, more and more materials of better properties have been developed and utilized for fabricating such products.
To overcome such drawback, there is an urgent need to improve the machining efficiency and accuracy of brittle non-conducting materials.
Similar to electrical discharge machining (EDM), ECDM is not affected by the strength or hardness of the materials.
Peng, “Study of hole-machining on Pyrex wafer by electrochemical discharge machining (ECDM)”, Materials Science Forum, 505-507 （2006）1207-1212
Sorkhel, “Experimental investigations into electrochemical discharge machining (ECDM) of non-conductive ceramic materials”, Journal of Materials Processing Technology, 95 (1999) 145