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Journal of System Simulation.
Journal of Materials Processing Technology, Vol. 110(1) (2001), P1-9
Internatioanl Journal of Materials & Product Technology, Vol. 24(1-4) (2005), P270-281
Journal of Materials Processing Technology, Vol. 171(2) (2006), P180-187
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, Vol. 394(1-2) (2005), P238-248

A novel method of the combination of high energy milling and hot pressing was adapted to fabricate dense titanium nitride-alumina (TiN/Al2O3) in situ composites using Ti, Al and TiO2 as raw materials.
Hence, synthesis of homogeneous powders with small grain size is necessary to fabricate TiN/Al2O3 composite materials with a better distribution of components.
Results and discussion Fig. 1 XRD patterns of the milled powders Fig.1 shows the XRD patterns of starting materials before and after milling.
It is obvious that only diffraction peaks of initial materials of Ti, Al and TiO2 existed before high-energy milling.
Peng, et al: Journal of Rare Earths.

., Craiova, 200515, Romania 2Technical Unversity of Cluj- Napoca, Faculty of Science and Materials Engineering, 103-105, Muncii St., 400 641 Cluj-Napoca, Romania ai_pascu@yahoo.com,balexstanimir@yahoo.com, cvidasimiti@yahoo.com Keywords: tungsten, vacuum, composite, density, hardness Abstract.
The tungsten-copper-nickel materials have been known and widely applied in electrical and electronic engineering.
These composite materials combine a refractory metal with another metal having high electrical and thermal properties, such as copper.
The progress in building new electric equipment, whose specifications are still better, stimulates regular search for new contact materials [3].
Pascu, Materials for Electric Contacts (Universitaria Publishing House, Romania, 2005).

Suvacı Anadolu University, Department of Materials Science and Engineering, Iki Eylul Campus, 26480 Eskisehir, Turkey Keywords: Homogeneous precipitation, tin oxide, nanosized ceramic particles.
Kang: Materials Letters 42 (2000), p. 283-289 [4] N.
Kim: Journal of Colloid and Interface Science 212 (1999), p.193-196 [7] G.
Liu: Journal of Materials Science 34 (1999), p. 3213-321 [8] J.
Ramaswamy: Materials Letters 57 (2003),p. 1604-1611 [10] N.

Experimental materials and samples preparation One type of experimental material, 304 austenitic stainless steel plates, was introduced in this research project and table 1 shows its chemical constituents.
Ralph, in: The quantitative description of the microstructure of materials, Boca Raton, Florida, CRC Press, 1995, p.195-209 [2] P.
Veijo: Journal of Materials Processing Technology, Vol.119 (2001), p.14-20 [3] P.
Ma: Journal of Mechanical Strength, Vol. 29(2007), p.139-142 [8] M.F.
McGuire: Austenitic Stainless Steels, Encyclopedia of Materials: Science and Technology, 2008, p.406-410 [9] H.L.

The use of carbon nanotubes as reinforcement filler-components is becoming more widespread for mechanical applications, which will increase the strength of polymeric materials [4].
Motta: Materials Forum, Vol. 32 (2008)
Premalal: Journal of Physics Vol. 8 (2007) p. 29
Sariciftci: Journal of Applied Physics Vol. 90 (2001)
Johnson: Current Opinion in Solid State and Materials Science Vol. 4 (1999), p. 28

Strenuous efforts have been devoted to prepare grain-oriented (GO) ceramics of Bi4Ti3O12 (BiT) and related materials by hot forging [7-9] and templated grain growth method [10-13].
These raw materials were weighted with a composition of Bi5FeTi3O15.
Tani, Journal of the Ceramic Society of Japan, 114 (2006), p. 363
Kitazawa Advanced Engineering Materials, 3 (2001), p. 490
Suzuki, Journal of the Ceramic Society of Japan, 113 (2005), p. 26

Natural fibers are widely used for reinforcement in polymer composite materials and proved to be effectively replacing synthetic fiber reinforced polymer composites to some extent in applications like domestic, automotive and lower end aerospace parts.
References [1] Savita Dixit, Ritesh Goel, Akash Dubey, Prince Raj Shivhare and Tanmay Bhalavi, Natural Fibre Reinforced Polymer Composite Materials - A Review, Polymers from Renewable Resources, Vol. 8, No. 2, 2017
Kaith and Inderjeet Kaur, Pretreatments of Natural Fibers and their Application as Reinforcing Material in Polymer Composites—A Review, Polymer Engineering and Science, Vol. 49, Issue 7, 1253-1272, 2009
Sharma, A Review on Mechanical Properties of Natural Fibre Reinforced Hybrid Polymer Composites, Journal of Minerals and Materials Characterization and Engineering, 3, 420-426, 2015
[8] Aruna.M and Sudhakar Muniyasamy, Evaluation of mechanical properties of calotropis Gigantea stem fiber-reinforced composite material, International Journal of Mechanical and Production Engineering, Volume- 5, Issue-2, 2017

Engineering Sciences, vol.3 (2000) ， p. 2-5
Journal of He bei Institute of Technology, vol.28(2006), p.44-47
Chinese Journal of Computational Mechanics, vol.11(1994), p.63-67
Journal of Mechanical Transmission, vol.31 (2007), p.81-82
Journal of Mechanical Transmission. vol.33(2009), p.27-31

As a result, simplification of complex geotechnical materials may cause large errors between calculated value and true value.
Acknowledgements The work reported here was supported by National Natural Science Foundation (No.51178122) of China, the Natural Science Foundation(No.
(in Chinese) [2] Qiujuan Zhou, Xiaopin Chen , “ Experimental study on creep characteristics of soft soils,” Chinese Journal of Geotechnical Engineering, Vol.28(2006), p.626-630.
(in Chinese) [5] Xianwei Zhang , Changming Wang, “ Empirical creep model for saturated soft soil,” Journal of Central South University(Science and Technology) : Vol.42 (2011), p.792-797
Journal of Engineering Geology, Vol.16(2008), p.508-592.