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The effects of two types of emissive materials on operation properties of M type cathode were also investigated.
To remove residual organic materials, the sample was heat treated at 500 °C for 2 h and nano emissive materials were produced.
During the impregnating process, it was observed that the melting point of emissive materials produced by the sol-gel combustion was lower than that of emissive materials synthesized by the ball-milling method, which is about 100 ͦC.
Ohlinger, The metallurgical properties of tungsten–iridium cathodes, Applied Surface Science. 146 (1999) 39-46
Shiezadeh, Synthesis of nanocrystalline electron emissive materials with homogenous composition in nanoscale, International Journal of Chemical Engineering and Applications. 4 (2013) 88-91

China Ranxianwen@163.com Keywords: energetic materials; smoothed particle hydrodynamics; ignition; laser Abstract.
This way, the temperature of materials rises.
Journal of Applied Physics, 2008, 103:083536
Femtosecond laser interaction with energetic materials. 2002, Livermore reports, UCRL-JC-145670
[8] Lucy L B, Astronomical Journal, 1977, 82:1013-1024

Bandyopadhyay: Materials Science and Engineering C, Vol. 23 (2003), p. 611 [20] H.
Wu: Journal of Biomedical Materials Research B, Vol. 63 (2002), 271 [21] Y.
Lee: Journal of Biomedical Materials Research B, Vol. 63 (2002), 161 [24] S.
Shi: Journal of Biomedical Materials Research B.
Weinkamer: Progress in Materials Science, Vol. 52 (2007), p. 1263 [75] O.

Acknowledgments This work was supported by National Program on Key Basic Research Project (973 Program, 2012CB723405); Natural Science Foundation of China (60937003, 61077068, 61275070, 61275051); Shanghai Natural Science Foundation (12ZR1411200).
[2] K.Saito and A.J.Ikushima, “Effects of fluorine on structure, structural relaxation, and absorption edge in silica glass,” Journal of applied physics, 2002, 91(8):4886-4890
[6] D.L.Griscom, in Defects in glasses, edited by F.L.Galeener, D.L.Griscom, and M.J.Weberf, materials research society, Pittsburgh, 1986, p.213
Yamamoto, “Formation mechanism of drawing-induced centers in silica optical fibers,” Journal of applied physics, 1985, 58, pp.1356-1361
Hanafusa, and S. sakaguchi, “Formation of drawing-induced centers in silica optical fibers,” Japanese Journal of applied physics, 1985, 24, pp.1117-1121

The waste can be processed to produce recycled materials which is usable as furniture or even as construction materials.
Materials The raw materials used to fabricate the AR are similar to the materials used to cast normal concrete which are cement, sand, aggregate and water.
Recycled Construction Waste Materials.
Flax Fibre Reinforced Concrete - A Natural Fibre Bio Composite for Sustainable Building Materials, in High Performance Structures and Materials.
Malaysian Journal of Science. 32 (2012)19-36

New materials in nuclear fusion reactor Fusion candidate structural materials mainly include the austenitic stainless steel (represented as the first candidate materials, e.g., PCA material), ferritic/martensitic steel (e.g., HT-9), vanadium alloy (e.g., VCrTi), and SiC/SiC composite materials.
Summary With the further development of materials science and nuclear technology, new material plays a more and more important role in the new nuclear reactor, the ultrahigh temperature, strong radiation, and strong corrosion service environments in new nuclear reactor require higher performance of the new material, now there is no material completely meet the requirements, the researchers need to do further work to solve some common problems in materials, such as the high temperature strength, creep resistance, irradiation damage resistance and corrosion resistance, etc., so as to develop new materials with excellent comprehensive properties.
Xu: Structural materials in fast reactor, J.
Chinese Journal of Nuclear Science and Engineering. 28 (2008), p. 129-133
Journal of Nuclear Materials. 371 (2007), p. 37-52

Preparation of Tourmaline Composite Materials and Its Property of Far Infrared Radiance Gang Xue a , Yanqing Wang b, Lei Zhang c and Xuefang Zhangd Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China a xuegang@hebut.edu.cn, beasybreeze@126.com , c329839106@qq.com, d sunny050700@yahoo.comc.n Keywords: tourmaline, rare earth, composite materials, preparation, far infrared radiance Abstract.
Table 1 List of the raw material ratio of the mineral composite materials.
Liang, et al.: Advanced Materials Research, Vol. 58 (2009), p.47 [7] W.W.
Liang: Journal of Functional Materials, Vol. 35(2004), p. 2579 [9] D.B.
Ding, et al.: Journal of American Ceramic Society, Vol. 91[8] (2008), p.2588

At this stage, a multistructural theory arose in materials science (the study of the material is carried out according to the scheme “recipe-technological factors - composition, structure - properties”).
Skachkov, Modeling of Building Materials as Complex Systems, Key Engineering Materials. 730(2017) 412-417 [2] Garkina I.A., Danilov A.M., Selyaev V.P., Materials as complex systems, Journal of Engineering and Applied Sciences. 11(2016) 2461-2464 [3] Irina Garkina and Alexander Danilov, Mathematical Methods of System Analysis in Construction Materials, IOP Conf.
Series: Materials Science and Engineering (2017) 245
[4] Garkina I., Danilov A., Composite Materials: Identification, Control, Synthesis, IOP Conference Series: Materials Science and Engineering. 471(2019) 032005
Series: Materials Science and Engineering. 191 (2017)012006 [7] Garkina Irina, Danilov Alexander, Experience of Development of Epoxy Composites: Appendix of Methods of Rank Correlation, Key Engineering Materials. 777(2018) 8-12

Materials and methods The data used in this study were based on the database of the SCI published by Thomson Reuters Web of Science, Philadelphia, PA, USA.
Articles (27,787) comprised 94.5% of the total production, followed distantly by proceedings papers (3,553; 12.1%), reviews (1,131; 3.8%), meeting abstracts (197; 0.7%) and editorial materials (120; 0.4%).
Besides, the average number of articles per journal rose steadily from 3.7 per journal in 2000 to 5.7 in 2011.
Distribution of output in subject categories and journals.
S.Ho, Global trends in Helicobacter pylori research from 1991 to 2008 analyzed with the Science citation index expanded, European Journal of Gastroenterology and Hepatology.23(2011) 295-301

Regardless of the size of these flaws, they can reduce the strength of rock materials [1].
Transparent brittle materials are able to solve this problem.
Material selection This paper chooses PMMA and glass as the test materials.
This method applies to materials which can be liquefied such as glass and resin.
It must be cautious to generalize the result to rock materials.