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Test equipment This experiment uses RMT-150 C rock mechanics test system, the test system is designed for rock and concrete kind of engineering materials for mechanical properties test, and it uses the digital electro-hydraulic servo control test plan, facilitates the data survey to be precise simply.
Acknowledgements This work was supported by the National Natural Science Foundation of China (Grant No. 51009083 ，51079077)，National Key Technology R&D Program (Grant No. 2008BAB29B03-4), Hubei Provincal Department of Education Science Research Project (Q20101201) and the Foundation of China Three Gorges University (Grant No.
JOURNAL OF HOHAI UNIVERSITY,2002，30(2)：93-96. （ In Chinese） [3] Zhengzhao Liang，Chunan Tang，Houxiang Li，Tao Xu，Tianhong Yang.
Chinese Journal of Rock Mechanics and Engineering，2010，29(11)：2319-2327. （ In Chinese） [7] Jie Liu，Jianlin Li，Huafeng Deng，Chaofeng Zhang，Yingxia Li.
SCIENCE CHINA:Technological Sciences，2010，53(05)：1442-1449. （ In Chinese）

The block copolymer can be used as carrier material.
Materials and Methods Materials Pluronic F87 (M(——)n 7700, 70wt% PEO) was kindly supplied by BASF Corporation.
Journal of Controlled Release.2006,111: 228–234 [6] WANG YZh, FANG XL Li YJ,et al.
Journal of Nanoscience and Nanotechnology.2006,.6:2638–2650, [8] J.R.
Journal of Controlled Release. 2002,84:39–47

This opens a wide field of applications for composite materials and nanomaterials.
These particles may comprise metal or non-metallic materials, organic or inorganic, solid or liquid.
All types of condensed substances, liquids, solutions, polymeric materials, glass, ceramics, ionic compounds and metals or gels may theoretically be used as raw materials in the production of nanofibers (Sodomka, L. 2009).
The use of nanotextiles in the construction and preservation of cultural heritage as carriers of properties to the materials to which they are applied, such as the ability to locally reinforce the damaged historical materials, or to provide resistance to the harmful effects of an aggressive environment, etc., is a promising direction in the development of these materials.
Journal of Colloid Interface Science, 2012, http://dx.doi.org/10.1016/j.jcis.2012.09.069 [3] Grassi, S., Carretti, E., Pecorelli, P., Iacopini, F., Baglioni, P., Dei, L.

The most popular materials are Yttria-Stabilized Zirconia (YSZ) and Lanthanum Strontium Gallium Magnesium (LSGM) as an electrolyte layer for high (800◦C) and medium (600◦C) working temperatures.
The paper contains a detailed review of materials used as the electrolyte layers for those type of electrolyzers, as well as fuels and electrode materials—some degradation aspects are also considered.
They concluded that the technology demonstrates great potential, although a large amount of work needs to be done in the area, especially in the field of material science.
Table 1 Main parameters of the systems which include SOEC System Efficiency tmax, ◦C pmax, bar SOEC-I – 800 1 SOEC-II 40–50 800 1 SOEC-III 70 700 1 SOEC-IV 47 900 1.2 Acknowledgments The project was funded by the National Science Center allocated on the basis of decision number DEC-2012/05/B/ST8/02849.
Streicher, “Hydrogen production by high temperature electrolysis of water vapour,” International Journal of Hydrogen Energy 5(1), pp. 55– 63, 1980

Industrial wastewater, which includes production waste water and production sewage, refers to the wastewater and waste liquid generated in the production process with industrial production materials, intermediate products, by-products and pollutants in the process of the production.
Science and technology input can not only promote the progress of science but also promote economic growth, meanwhile, it can also effectively solve environmental problems.
References [1] Information on http://baike.baidu.com/view/4516599.htm [2] Ma.L, Jin.FJ and Song.ZY: Journal of Geographical Sciences (Science Press,China 2013)
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It is this capability that allows electron beam treatment of ceramic materials (heating, soldering, welding, surface melting [5,6]).
Annenkov, Physical foundations for high-temperature electron-beam modification of ceramics, Russian Physics Journal, 39 (1996) 1146-1159
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Experimental Experimental materials. 5083 aluminum alloy block(size for 20mm×20 mm×10mm) is used as substrate and gamma TiAl alloy powder as spray materials.
Li, C.J.L, H.L.Liao: Applied Surface Science.
Xiong: Journal of Thermal Spray Technology.
Yamaguchi: Journal of Thermal Spray Technology.
Li: Materials Review.

Liu and et al: Journal of Alloys and Compounds Vol. 484 (2009), p.966 [2] Z.Y.
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Mahmoud, Mahmoud Abd Rabbou, Effect of Friction Stir Welding Parameters on the Peak Temperature and the Mechanical Properties of Aluminum Alloy 5083-O, Improved Performance of Materials (2018)11-25
Feulvarch, on material flow in Friction Stir Welded Al alloy, Journal of Materials Processing Technology, 239(2017)284–296
Mukherjee, analysis of the first mode of metal transfer in friction stir welded plates by image processing technique, Journal of materials processing technology, 197(2008)17-21
Huang, Effects of welding parameters and post-heat treatment on mechanical properties of friction stir welded AA2195-T8 Al-Li alloy, Journal of Materials Science & Technology,34(2018)219-227
Field, High-Speed Friction Stir Welding of AA7075-T6 Sheet: Microstructure, Mechanical Properties, Micro-texture, and Thermal History, Metallurgical and Materials Transactions A,49(2018)210-222.

Influence of weld imperfections on the fatigue behaviour of resistance spot welded advanced high strength steels Michael Rethmeier1, 2 1Fraunhofer Institute for Production Systems and Design Technology (IPK), Berlin, Germany 2BAM Federal Institute for Materials Research and Testing, Berlin, Germany Michael.Rethmeier@bam.de, phone: +49 30 8104-1550 Keywords: Resistance spot welding, gaps, cracks, fatigue life Abstract The use of advanced high strength steels (AHSS) in the automotive body-in-white is increasing.
§ Internal imperfections have no significant influence on the fatigue life References [1] Brauser, s. et al., Deformation behaviour of spot-welded high strength steels for automotive applications, Materials Science and Engineering: A, Volume 527, Issue 26 (2010), pp. 7099-7108 [2] Long, X. and Khanna, S.
H. et al., “An investigation of the effect of the gapvalues between the overlap portions of the spot-welded pieces on fatigue life”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 222, Number 6, (2008), pp. 881-890 [10] Hahn, O. and Flüggen, F., „Influence of cyclic loading on the mechanical properties of components: Proc DVS-Congress "Spot welding", May 2010, pp. 180-191 [11] Davidson, J.
H., Methods to obtain weld discontinuities in spot-welded joints made of advanced high-strength steels, Welding in the world 55 (2011), No.11/12, pp.99-106 [14] Gaul, H. et al., “Evaluation of fatigue crack propagation in spot welded joints by stiffness measurements”, International Journal of Fatigue, Vol. 33, Issue 5, 2011, pp. 740-745 [15] Ullner, C. et al., “Determination of local stress–strain properties of resistance spot-welded joints of advanced high-strength steels using the instrumented indentation test”, Journal of materials Science, Vol. 47, issue 3 (2012) 1504–1513 [16] Wang, G. and Barkey, M.
E., “Investigating the spot weld fatigue crack growth process using X-ray imaging”, Welding Journal, vol. 85, issue 4 (2006), pp. 84-90 [17] Pan, N. and Sheppard, S.