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Introduction Al2O3 ceramic is regarded as a typical hard and brittle material.
Yoshikawa: Journal of Materials Processing Technology Vol. 132 (2003), p. 353 [2] M.Jiang,R.Komanduri,Chemical-mechanical polishing(CMP) in magnetic float polishing(MFP) of advanced ceramic (silicon nitride) and glass(silicon dioxide),Key Eng.Mater Vol1-14(2001),p.202-203 [3] F.
Eda: International Journal of Manufacturing Technology and Management Vol. 7 (2005), p. 441 [5] L.
Kamiya, etc: CIRP Annals- Manufacturing Technology Vol. 55 (2006), p. 313 [6] Nobuo Yasunaga: Journal of the Surface Science Society of Japan Vol. 22 (2001), p. 187 [7] N.
Yasunuga: Journal of Japan Society for Precision Engineering Vol. 44 (1978), p. 65 [8] Y.

Introduction Drying shrinkage is an important characteristic of concrete, is one of the main reason which causes cracking of concrete materials.
Kenai: Construction and Building Materials, Forum 5, Volume 22(2008), p.886-893 [5]L.
Delhez: Construction and Building Materials, Forum 3, Volume 24(2010), p.1-6 [6]A.
López-Gayarre: Construction and Building Materials, Forum 3(2009), p.2545-2553 [7]L.
Yan: Journal of Kuming University of Science Technology, China, Forum 3, Volume 35(2010), p.38-44

Moreover, structural evaluation of polymeric materials was carried out using scanning electron microscopy (SEM).
The use of natural raw materials from renewable sources is of particular interest.
The fire behavior and smoke emission of the manufactured materials were assessed by cone calorimetry.
Experimental Materials.
Shobhanashree: Research Journal of Textile and Apparel Vol. 16 (2012), p. 47 [6] K.

Vibration Analysis on Ball End Milling Hardened Mould Assembled with Different Hardness Materials Y.Y.
Toh: Journal of Sound and Vibration, Vol.278 (2004), pp. 101-115
Sun et al: Journal of Advanced Manufacture Technology, Vol.46 (2010), pp.69-78
Aslan: Materials and Design, Vol.26 (2005), pp. 21-27
Gan: International Journal of Machine Tools and Manufacture, Vol.29 (1989), pp. 295-303

Beijing, China 100190 2University of Chinese Academy of Sciences, Beijing, China 100049 3State Key Laboratory of Transducer Technology, Institute of Intelligent Machines, Chinese Academy of Sciences.
Firstly, we choose PDMS as the flexible material because it is widely applied in micro-fluidic chips to fabricate structures on microscale.
Silicon, the most common material in MEMS, is the ideal choice for the mold.
Maa, Microperforated panel wideband absorber, Noise Control Engineering Journal November–December (1987) 77–84 [2] D.
Swenson, Compact sound absorbers for low frequencies, Noise Control Engineering Journal 38 (3) (1992) 109–117 [4] Y.Y.

Materials and Methodology Materials.
Zhang, Chemical synthesis of Ni/TiO2 nanophotocatalyst for UV/visible light assisted degradation of organic dye in aqueous solution, Journal of Sol-Gel Science and Technology, 58 (2011) 312-318
Yue, Discoloration and Mineralization of Non-biodegradable Azo Dye Orange II by Copper-doped TiO2 Nanocatalysts Journal of Environmental Science and Health, Part A: Toxic /Hazardous Substances and Environmental Engineering, 39 (2004) 2583 - 2595
Fu, Synthesis of nanocrystalline anatase TiO2 by one-pot two-phase separated hydrolysis-solvothermal processes and its high activity for photocatalytic degradation of rhodamine B, Journal of Hazardous Materials, 176 (2010) 139-145
Shen, Glycerol-mediated synthesis of Ni and Ni/NiO core-shell nanoparticles, Materials Letters, 60 (2006) 750-753

Up to now, many materials have been reported to have the resistive switching (RS) properties, such as transition metal oxides, chalcogenide materials, polymer and organic materials, amorphous Si, and graphene derivates [3].
Therein, BiFeO3 (BFO) become one of the most important materials for RS effect due to its tunability of leakage current, which broaden its potential use in novel, multifunctional device applications [5].
Fujisaki, Japanese Journal of Applied Physics, Vol. 49 (2010), p. 100001
Szot, Advanced Materials, Vol. 21 (2009), p. 2632
Zhao, Journal of Physics D: Applied Physics, Vol. 42 (2009), p. 185010

In some cases, more than one type of balls are used for grinding raw materials.
From a microstructural point of view, the two materials show significant differences.
Maldonado, Effect of titanium on the as-cast microstructure of a 16%chromium white iron, Materials Science and Engineering A 398 (2005) 297-308
Jena et al., Improvement of toughness of high chromium white cast iron: duplex ferritic-austenitic matrix, Materials Science and Technology 34 (2018) 299-304
LUdema, (Eds), Proc. of wear Materials, ASME, New York, 1983, 12-18

Experimental Preparation of SiC ceramic membrane supports for gas-solid separation which involves many kinds of raw materials.
The experiment raw materials are shown in table 1.
Table 1 Raw materials for samples Raw materials Production place Particlesize SiC Ningxia 250μm Kaoline Guangdong ≤15μm Feldspar powder Hebei ≤15μm Silica powder Heibei ≤15μm Charcoal powder Shanghai 38~44μm Sintering aid which has a specific melting point and chemical composition, is adopted by using of Al2O3-K2O-SiO2 ternary phase diagram.
Journal of membrane science, 1999, 156(1): 141-152
Journal of materials science, 1998, 33(4): 913-921

b) Domestic raw material suppliers can only provide materials of general requirements; it is difficult to meet the technical requirements, quality requirements and inspection requirements of nuclear materials.
c) Localization of nuclear power materials still remains to be done.
Countermeasures and suggestions In view of the existing problems of procurement and manufacturing of nuclear power materials, we need to do a lot of work: (a) Establish Chinese nuclear power standards and nuclear materials system America ASTM has a set of material system on materials which are used in the nuclear reactor pressure vessel.
Journal of University of South China (SOCIAL SCIENCE EDITION), 2005, 6 (6): 38-42.
Shanghai science and Technology Press, 2008