Search results

., Ltd of WISCO, Wuhan 430083, P R China; 2School of Materials Science and Engineering of WHUT, Wuhan 430070, P R China aluther@wisco.com.cn, b783911530@qq.com, cfanxm@whut.edu.cn, d373014011@qq.com * Corresponding Author Keywords: Cast Copper Stave; Numerical Simulation; ProCAST; Process Optimization Abstract.
The body material is pure copper(WCu≧99.5%).
(3)materials Mould: resin sand; casting: pure copper; tube: steel(25# carbon steel).
Model of forming-accretion on blast furnace copper stave and industrial application, Journal of Iron and Steel Research, 7(2012)1-5
Serajzadeh, et al, Simulation of melt flow in coated mould cavity in the casting process, Journal of Materials Processing Technology,42(2003)493-507

An evaluation of Sn-Cu-Ga and Sn-Cu-Ag solder alloys for applications within the electronics industry Georgiana Melcioiu1a, Viorel-Aurel Şerban1b, Mark Ashworth2c, Cosmin Codrean 1d, Marin Liţă1e, Geoffrey Wilcox2f 1 ‘’Politehnica’’ University of Timişoara 2 Department of Materials, Loughborough University, Loughborough, Leicestershire, UK, LE11 3TU ageorgianamelcioiu@yahoo.com, bviorel.serban@rectorat.upt.ro, cM.A.Ashworth@lboro.ac.uk, dcosmin.codrean@mec.upt.ro, emarin.lita@mec.upt.ro, fG.D.Wilcox@lboro.ac.uk, Key words: tin whiskers, PCB, printed circuit boards, melt spinning, solder, ribbons ABSTRACT Components soldered with Sn-based alloys are susceptible to the growth of whiskers.
The choice of solder alloy could be influenced by factors such as: substrate material used (e.g. brass or copper), the residual stresses within the substrate (copper-plating, immersion plating), composition and properties of intermetallic compounds formed and the diffusion of alloying elements within the tin.
Whisker growth on the solder alloy could be influenced by: the shape and size of the tin grains, the grain orientation of the tin, the thickness of solder layer, tin oxide formation, tensile stresses generated within the soldering material, elemental diffusion and the development of a columnar grain structure.
The material is melted by induction heating in a quartz crucible and is ejected, under pressure, through an aperture in base of the crucible onto a copper roller.
ACKNOWLEDGMENT This work was partially supported by the strategic grant POSDRU/CPP107/DMI1.5/S/77265, Project ID77265 (2010), co-financed by the European Social Fund – Investing in People, within the Sectoral Operational Programme Human Resources Development 2007 – 2013 REFERENCES [1] Suganuma K., 2004 Lead-free soldering in electronics science,tehnology and enviromental impact, Marcel Dekker, , ISBN:0824741021(pp.170-190) [2] Brusse J., Leidecker H., (2010), Tin Whiskers NASA Goddard, (pp 7-15),(http://nepp.nasa.gov/WHISKER/) [3] Brusse J., Leidecker H., Panashchenko L. 2010, Metal Whiskers A Discussion of Risks and Mitigation, Enviromental Technology Technical Symposium and Workshop Thesis, University of MD (http://nepp.nasa.gov/whisker) (pp. 3-15) [4] Şerban V.A., Codrean C, D Uţu and C Opriş, 2009, Amorphous alloys for brazing copper based alloys The 13th International Conference on Rapidly Quenched and Metastable Materials, Journal of Physics, ISBN. 1742-6596 Journal

Thereby, further research and development of Cu based SMAs are expected to obtain alternative SME materials.
After weighing source materials of Cu, Sn, and Mn in 3N level, we made nine alloy ingots using a high-frequency induction melting furnace in air with N2 gas injection.
[3] Kainema R, Ohmori T, Sudo Y, Ishida K, Journal of Japan institute of copper, 54, (2015), 1, pp. 1 to 5
[4] Nakajima T, Muramatsu N, Sasaki Y, Kaneko D, Takeda M, Journal of Japan institute of copper, 56, (2017), 1, pp. 266 to 270
[5] Miura S, Kato H, Summary of The Society of materials science, Japan, 37, 71-73, 1988-05-26 [6] N.

Comparison of plasma-aided desizing with conventional desizing of polyacrylate on PET fabrics Xuming Li1,2,a Yiping Qiu1,b 1 Key Laboratory of Textile Science and Technology, Ministry of Education, China, College of Textiles, Donghua University, Shanghai 201620, China 2 College of Textile and Clothing, Shaoxing University, Shaoxing 312000, China a lixm@mail.dhu.edu.cn b ypqiu@dhu.edu.cn Key words: Atmospheric pressure plasma jet, Polyacrylate, Desizing, PET fabrics, AFM, XPS, SEM Abstract: The influence of He/O2 atmospheric pressure plasma jet (APPJ) treatment on subsequent wet desizing of polyarylate on PET fabrics was studied in present paper.
Materials The fabric used was a 100% PET filament with 75 denier warp and weft yarns composed of 36 filaments and the polyacrylate size agents was 35% solution supplied by Zhejiang Tiansheng Holding Group Co., Ltd, Shaoxing, China. 2.2.
Journal of Applied Polymer Science 91(2004) 3016–3022 [4] J.R.
Journal of Applied Polymer Science 78 (2000) 1083–1091

Textural and color changes of red sea bream (pagrosomus major) during storage at 0˚C Xiaofei Wua, Danshi zhu*, Jieyu Liang, Lina Wang, Jianrong Li* Research Institute of Food Science, Bohai University.
Materials and methods 2.1 Fish samples.
The texture of Atlantic salmon (Salmo salar) muscle as measured instrumentally using TPA and Warner–Brazler shear test, Journal of the Science of Food and Agriculture. vol.79 (1999), p.1737-1746
Freshness assessment of gilthead sea bream (Sparus aurata) by machine vision based on gill and eye color changes, Journal of Food Engineering. vol.119 (2013), p. 277-287
Multisensor for fish quality determination,Trends in food science & technology. vol.15 (2004), p. 86-93

In order to ensure the textures, materials and environmental effects unification in the mapping process, it requires that images should be conducted by Photoshop.
Acknowledgements This work was financially supported by the Natural Science Foundation of China (61272077) Program of Jiangxi Province Science and Technology (20133BBE50022).
References [1] Ling Li, Ping Wang: Journal of Luoyang University.
(in Chinese) [4] Yong Long, Jing Yuan, Feng-Ju Kang: Journal of System Simulation.
(in Chinese) [7] Cheng Wang, Jun-Qing Zhou: Creator Visual Simulation Modeling Technology[M] (Huazhong University of Science and Technology Press, 2005).

China; 3 School of materials science and engineering, Chang’an University, South 2nd Ring Road, Xi’an,710064, P.R.
The double variables filtration method is put forward by the highway science research institute, ministry of communications have simple principle and convenient application.
Beijing: Science Press, 2004.
Journal of Jilin University (Engineering and Technology Edition), 2008,38(6)：1291-1294.
Journal of Safety and Environment, 2005, 5(5):12-13.

References [1] H．J Wameeke,M Huser.．International Journal of Production Economics,vol.41(1995), pp:37
[2] J Balakrishnan, CH Cheng..European Journal of Operational Research,vol.16(2007), pp:281
[8] M Q Li, X H Pang, F J.Wu Advanced Manufacturing Technology (Chinese science and technology publisher, 2005)
[10] T R Banga, S C Shaeam, Industrial Engineering and Management Science (Khanna Publishers,1982)
Vocational education and training to learn new concepts (Science publisher,2003)

F. , “Operating Temperature and Distribution of a Working Fluid in LHP,” International Journal of Heat and Mass Transfer, Vol. 50, pp. 2704-2713, 2007
C. , “Effect of Sintering Temperature Curve in Wick Manufactured for Loop Heat Pipe,”World Academy of Science, Engineering and Technology, Vol. 62, pp. 631-636, 2012
A. , “Pressing and Sintering of Nickel Powders, ” The International Journal of Powder Metallurgy & Powder Technology, Vol.20, No. 4, pp. 281-285, 1984
“Effect of Filling Powder Volume Rate in Wick Manufactured for Loop Heat Pipes,” Advanced Materials Research, Vol. 488~489, pp.321-327 , 2012
Moffat, “Describing the Uncertainties in experimental results,” Experimental Thermal and Fluid Science, vol. 1, pp. 3-17, 1988.

In addition, branch pipe material agitator is often used to solve residue difficult discharge, which make household biogas digester can work more than 10 months per year. 2.2 Livestock and poultry farm biogas project Livestock and poultry farm biogas project is a rural energy engineering technology.
Compared to straw gasification, straw biogas project has the following advantages: (1) No tar clogging problem; (2) No sewage discharge causing secondary pollution; (3) In addition to biogas, biogas residue and slurry can achieve energy multistage utilization. 2.5 Biomass thermal utilization At present, Tianjin biomass thermal utilization patterns include fuel-saving stove, suspend kang, small gasification furnace, biomass briquet and so on .Because of difficulties in the processing of raw material and needing special stove burning, biomass briquette has not been a large - scale promotion and only used in a few areas for winter heating.
Acknowledgements This research work was financially supported by National Science and Technology Ministry under Grants 2008BAJ08B20-8 (Research on rural energy conservation standard).
References [1] J.A.Zhang and D.H.Liu: Biomass Energy Utilization Technology (Chemical Industry Press, China 2009) [2] P.Li, H.M.Liu and G.Li: Estimate of Tianjin animal manure annual emission (The Second National Agricultural Environmental Science Symposium, China 2007) [3] Information on http//www.tj.gov.cn [4] Y.S.Tian, L.X.Zhao and H.B.Meng: China’s large-scale farm animal manure resources biogas production potential evaluation (Journal of Agricultural Engineering, Vol. 28 (8), p. 230-234, China 2012) [5] B.Wang: New Opportunities for Tianjin rural biogas construction (Journal of Tianjin Agriculture and Forestry Science and Technology, Vol. 208 (2), p. 1-2, China 2009) [6] Information on http://www.biogas.cn