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Li, Carbon/carbon composites, New Carbon Materials 16 (2) (2001) 79-80
Day, et al., Oxidation protection for carbon fiber composites, Journal of Materials Science 31 (1996) 1389-1397
Space Planes and Hypersonic Systems and Technologies Conference, American Institute of Aeronautics &Astronautics, AIAA-99-4913, 1-4 November 1999, Norfolk, Virginia [9] Yootaek: Kim, Jun-Tae Choi, Jong Koen Choi, et al., Effect of source gas composition on the synthesis of SiC/C functionally gradient materials by CVD, Materials Letters 26 (1996) 249-257
Hiral, Density and microstructure of CVD SiC-C nanocomposites, Journal of Materials Science 26 (1991) 6618-6624
[12] Joung Il Kim, Weon-Ju Kim, Doo Jin Choi, et al., Deposition of compositionally graded SiC/C layers on C-C composites by low pressure chemical vapor deposition, Journal of Nuclear Materials 307-311 (2002) 1084-1087

Hryn (Ed.), Magnesium Technology, TMS (The Minerals, Metals and Materials Society), 2001, pp. 119-125
JOM-journal of the minerals metals metals & materials society 55 (11): A34-A39 NOV 2003 [5] Kinji Hirai, Hidetoshi Somekawa, Yorinobu Takigawa, Kenji Higashi, Eeffcts of Ca and Sr addition on properties of a cast AZ91 magnesium alloy at room and elevated temperature.
Material Science and Engineering 2005(403):276-280 [6] Dargusch MS, Pettersen K, Bakke P, Nogita K, Bowles AL,Dunlop GL.
International Journal of Cast Metals Research 17 (3): 170-173 2004 [7] LIU Xiangguo, PENG Xiaodong, XIE Weidong, WEI Qunyi.Preparation, Technologies and Application of Strontium-Magnesium Master Alloys, Materials Science Forum, Vol.488-489, June 2005, pp:31-34 [8] Xu R.
Materials Science Forum, Vols.546-549, 2007, pp463-466

In this paper,by using cement, sand and other materials to make the M5, M7.5, M10 three strength grades cement mortar, the effect of water cement ratio and cement dosage on the strength of cement mortar was studied.
Introduction According to the similarity theory in the design of indoor model test,similar materials were determined, then the ratio of similar materials was changed to simulate the performance of different geological structure[1].
Acknowledgement The research project was supported by national natural science foundation of China (51204215) and Doctor special research fund of colleges and universities(20134321120004) and also funded by Hunan province science and technology plan projects (2013SK3150).
[2] Xiaoqiu Fan, Baoning Hong, Xin Hu:Journal of Geotechnical Engineering, (2008).
Journal of Silicate, (2011).

This, in turn, contributes to expanding the applications of laser materials processing technologies [30-41], including the area of welding stainless steels [28, 30, 32-34, 37, 40].
The lack of thermodynamic and thermophysical data on the properties of alloys is one of the important problems in the development of new advanced materials of a complex chemical composition.
The same problem exists also during the application of new methods of thermal influence (for example, laser radiation) on the known and widely used materials.
Shishkin A 2017 Diffusion welding through vacuum-deposited porous interlayers Journal of Materials Processing Technology 247 268-279 doi:10.1016/j.jmatprotec.2017.04.029 [14] Kim J, Kim S, Kim K, Jung W, Youn D, Lee J and Ki H 2016 Effect of beam size in laser welding of ultra-thin stainless steel foils Journal of Materials Processing Technology 233 125-134
Procedia CIRP 74 456-460 doi:10.1016/j.procir.2018.08.151 [37] Alcock J and Baufeld Bb2017 Diode laser welding of stainless steel 304L Journal of Materials Processing Technology 240 138-144 doi:10.1016/j.jmatprotec.2016.09.019 [38] Reisgen U, Krivtsun I, Gerhards B and Zabirov A 2016 Experimental research of hybrid welding processes in combination of gas tungsten arc with CO2- or Yb:YAG-laser beam Journal of Laser Applications 28 022402 doi:10.2351/1.4944096 [39] Shelyagin V, Khaskin V, Bernatskyi A, Siora A, Sydorets V and Chinakhov D 2018 Multi-pass laser and hybrid laser-arc narrow-gap welding of steel butt joints Materials Science Forum 927 64-71 doi:10.4028/www.scientific.net/MSF.927.64 [40] Kuznetsov M, Larin M and Sorokin A 2019 Features of laser welding light constructions from cryogenic austenitic steel 316L Key Engineering Materials 822 512-519 doi:10.4028/www.scientific.net/KEM.822.512 [41] Poznyakov V, Markashova L, Shelyagin V, Zhdanov S, Bernats’kyi A, Berdnikova O and

Introduction The emergence and development of new materials manufacturing technologies leads to the invention of new ways to control their properties or to improve existing.
Materials and Methods The object of the study were lattice constructions made by selective laser melting on a SLM 280HL system from powder of the Ti64 alloy.
[3] Golod, V.M., Sufiiarov, V.S. , The evolution of structural and chemical heterogeneity during rapid solidification at gas atomization, IOP Conference Series: Materials Science and Engineering, 2017, Vol.192(1), pp. 012009.
Key Engineering Materials. 2015, Vol.651-653, pp. 677-682.
Rapid Prototyping Journal, 16(6), 450-459.

REFERENCES [1] Rack H J. 1998.Titanium alloys in total joint replacement—a materials science perspective.
The Open materials Science Journal 8:1-17
Dental materials 23(7): 844-854
Materials Science and Engineering 47(3): 49-121
Metals and Materials International 15(6): 949-953

The materials used as heterogeneous catalyst is a precious metal such as platinum Rhodium and Palladium.
Prasetya, International Journal of Chemical, Molecular, Nuclear, Material and Metallurgical Engineering, Vol. 9, no. 8, (2015) p 947 [8] E.
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Ghomashchi, Effect of modification during conventional and semisolid metal processing of A356 Al-Si alloy, Materials Science and Engineering A 415 (2006). 273-285
Abdulkhalek, Effect of microstructure on the mechanical properties and fracture of commercial hypoeutectic Al-Si alloy modified with Na, Sb and Sr, Journal of Materials science 34 (199) 3555-3564
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Moustafa, Effect of solution heat treatment and additives on the hardness, tensile properties and fracture behaviour of Al-Si (A413.1) automotive alloys, Journal of Materials Science, 38 (2003) 4523-4534.

Acknowledgements This work was financially supported by the Natural Science Foundation of Guangxi Province (No. 0991284, 0899023 and 013064).
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The surface micro-morphology transition of pearls induced by cerium Weilin Shi1,2, a, Yefei Jin2,b and Yao Ge1,c 1School of Environment Science and Engineer, Suzhou University of Sciences and Technology, Suzhou 215009, Jiangsu, P.
Experimental materials and methods Experimental materials.
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