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Effects of Si3N4 Additions on Creep Resistance of Al-Al2O3 Composites Haoning Shia, Yong Lib, Chuanjing Li, Haixia Qin and Jialin Sun School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China anjdexy@163.com, blirefractory@vip.sina.com(corresponding author) Keywords: Silicon nitride; Creep; Aluminum; Alumina Abstract.
The result indicates that the change of interior material has occurred, causing creep resistance of sample increased.
Grain boundary phase and microstructure of the material determines its creep properties [8-9].
Slip along the direction of crystal and particle diffusion along grain boundaries led likely to pure corundum materials poor creep resistance.
Journal of Synthetic Crystal, 2014, 43(9):2198-2204 [3] Huasheng Zhan, Junhong Chen, Wendong Xue,et al.

Introduction White mineral fillers are widely used in rubber, paint and other polymer materials.
Coating nanometer CaCO3 particles on the mineral particles,changing the surface properties of micron powder,the smooth cleavage surface becomes rough, its sharp edges will be passivated, the binding force between the filler and polymer materials will be effectively increased, the problem of composite local stress concentration will be solved,so the advantages of nanoparticles will be effectively used and high performance composite materials will be obtained while reducing the cost of production.
This may be because part of the Ca(OH)2 was coated on the mineral particle surface without reacting with CO2, or because of any other loss of material.
Note: This article is the  research results of Binzhou Vocational College Science and Technology Development Program ( No. 2013XYKT06)  and Binzhou Municipal Science and Technology Development Program ( No. 2013ZC0705)  References [1] G.S.
Journal of Materials Processing Technology. 170(2005)58-63

The investigation have proved that the tribological properties of the nanoparticle additives are better than the frequently used solid lubricant additives and hence have become promising new lubricant materials.
Materials and methods Ceramic nanopowders.
The second studied material - spinel, compared to the base oil, all the investigated concentrations reduces the coefficient of friction value for 9-11 %.
References [1] Da Jiao, Shaohua Zheng, Yingzi Wang, Ruifang Guan, Bingqiang Cao, The tribology properties of alumina/silica composite nanoparticles as lubricant additives., Applied Surface Science 257 (2011) 5720–5725 [2] A.
Series: Materials Science and Engineering 18 (2011) 062024, 5 p. http://iopscience.iop.org/1757-899X/18/6/062024.

Study on the (Fe,Cr) 7C3 particles reinforced iron-based composite coating Libin Niu1,a, *, Zhen Xu1,b, Jianhong Peng2,c 1 School. of Material Science and Engineering, Xi’an University of Science and Technology, China 2College of Physics and Electronic Information Engineering,Qinghai Nationalities University,China *,a dy059@126.com, b xuzhen0913@163.com, c dy059@163.com Keywords: Reinforcement, In situ, Composite coating, (Fe,Cr) 7C3 Abstract An iron based composite coating reinforced by (Fe,Cr) 7C3 particles, with a thickness of 4.0 mm, was fabricated on the ductile cast iron substrate by means of a centrifugal casting and in situ techniques.
However, as a wear resistant material, its application is still limited [5-7].
Experimental processing Chromium wires (0.25 mm in diameter) and ductile cast iron were used as the raw materials.
In order to obtain the high volume fraction of the (Fe,Cr) 7C3 phase, the original materials should contain relatively high Cr and C contents; their chemical compositions are Fe–3.61C–2.50Si–0.28Mn–0.45Cu–0.04Cr–0.017P–0.014S (wt-%) for ductile cast iron and Fe–0.12C–0.79Si–17.54Cr–0.011P–0.013S (wt-%) for Cr wire, respectively.
Norton: AFS Trans, Vol. 88(1985), p. 123 [8] Libin Niu, Mirabbos Hojamberdiev, Yunhua Xu: Journal of Materials Processing Technology, Vol. 210 (2010), p. 1986 [9] J.

Material library, then create a 3D model of the various components the teapot material library of 3D model shown in Figure 2.
Establishing the 3D material library of classification of ceramic products component models to help product designers to quickly design a new product.
Southwest Agricultural University (Social Science) June 2006 6 Volume 4 2 [3] FangGuiSheng.
Science and Technology Information.2009(06) [5] FuYongGang.
Journal of Engineering Graphics.2006-08-30

Material properties of Q345R The material of ellipsoidal heads considered is Q345R according to the standard of GB713-2008 steel plates for boilers and pressure vessels[3].
Table 1 The chemical composition of base material about Q345R material C(%) S(%) Si(%) Mn (%) P%) V(%) Ti(%) Q345R 0.19 0.01 0.32 1.46 0.017 0.0024 0.028 Table 2 The mechanical properties of Q345R steel Yield strength (MPa) Tensile strength (MPa) Elongation(%) AKVJ Q345R ≥345 ≥550 ≥28 135 The thickness of Q345R material that has been discussed in this study is 10mm.
Conclusions The study investigated the chemical composition of base material and the mechanical properties of Q345R by testing.
References [1]Jinhui Zhang, Mei Zhan, He Yang, Zhiqiang Jiang, Dong Han,in:3D-FE modeling for power spinning of large ellipsoidal heads with variable thicknesses, Computational Materials Science 53 (2012) 303–313
[2] ZHENG Xiao-hua，AN Hong-ping，LIU Jian-sheng,in:Stretch Forming Analysis on Large Thick-Wall Ellipse Head by Finite Element Method, Journal of taiyuan university of science and technology32 (20121) 472–475

On the other hand, fly ash, by-product of coal burning power plants, is usually considered a waster material [4].
Experimental set-up Materials.
Luo: Applied Mechanics and Materials, Vols.174-177 (2012), p. 806
Li: China Civil Engineering Journal, Vol. 41 (2008), p. 45.
Luo: Applied Mechanics and Materials, Vols.99-100 (2011), p. 213

Materials and method Ru shots (99.95%) and Al shots (99.99%) were used for the preparation of RuAl 50% (at) alloy.
The material which is to be melted is placed into a water-cooled crucible surrounded by an alternating current coil.
The Ru-RuAl eutectic phase wets the grain boundary of RuAl which usually leads to a high ductility of the material.
References [1] Wright, P.K. and Evans, A.G. , Mechanisms governing the performance of thermal barrier coatings, Current Opinion in Solid State and Materials Science 4 (1999) 255-265
Designing oxidation-resistant coatings, Journal of the Minerals Metals and Materials Society 52 (2000) 28-35 [4] D.R.Clarke, The lateral growth strain accompanying the formation of thermally grown oxide, Acta Mat. 51 (2003) 1393-1407 [5] C.G.Levi, Emerging materials and processes for thermal barrier systems.

Microstructure of Hydroxyapatite/Collagen Coating on AZ31 Magnesium Alloy by a Solution Treatment Quanhe Bao a*, Liqing Zhaob, Hemin Jingc, Qiang Xud School of Materials Science and Engineering, Anhui University of Technology, Anhui Maanshan, 243002 P.
Yang, The preparation, cytocompatibility, and in vitro biodegradation study of pure β-TCP on magnesium, Journal of Materials Science Materials in Medicine, 20 (2009) 1149-1157
Tas, Accelerated transformation of brushite to octacalcium phosphate in new biomineralization media between 36.5°C and 80°C, Materials Science and Engineering: C, 31 (2011) 1136-1143
Ciobanu, Investigation on the effect of collagen and vitamins on biomimetic hydroxyapatite coating formation on titanium surfaces, Materials science & engineering.
C, Materials for biological applications, 33 (2013) 1683-1688

Pakieła d 1Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego St. 18a, 44-100 Gliwice, Poland a zbigniew.brytan@polsl.pl, b miroslaw.bonek@polsl.pl, c leszek.dobrzanski@polsl.pl, d wojciech.pakiela@polsl.pl Keywords: ferritic stainless steel, laser surface alloying, HPDL, remelting Abstract.
Materials manufactured thought powder metallurgy (PM) often provides great advantages regarding to manufacturing large series of small size and relatively complex shape components.
Lawley, International journal of powder metallurgy, 2008, vol. 44, no3, pp. 57-67
Dobrzański, Materials Science Forum Vol. 672 (2011) pp. 165-170
Dobrzański, Materials Science Forum, vols. 654-656 (2010), pp. 1848-1851.