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More recently, spray deposition processing has received considerable attention as an alternative route for the fabrication of a variety of structural materials [5,6].
A practical limit of about 8%(wt) Zn is imposed for conventional cast materials because of inherent foundry problems such as solute macrosegregation and cracking [7].
De Sanctis: Materials science and engineering, Vol. 141 (1991), p. 103 [2] J.C.Werenskiold, A.Deschamps, Y.Brechet: Materials science and engineering, Vol.
Lavernia: International journal of rapid solidification, Vol. 8 (1995), p. 237
[4] J.A.Juarez-Islas and R.Perez: Materials science and engineering, Vol.

Drill resistance is relative to several properties the object materials, such as hardness and strength.
For the wood materials, the hardness and strength are mainly decided by the value of the density [1, 2].
Materials and Methods Experimental materials and method.
(USDA Forest Service, USA 1999) [2] CHENG Junjie: Wood science (China Forestry Publishing House, Beijing 1985) [3] ASTM (American Society for Testing and Materials): Standard test methods for specific gravity of wood and wood-based materials.
(Annual book of ASTM standards, USA 1985) [4] Laufenberg, T L: Forest Products Journal.

Profile and Material Properties Material Properties.
Q345 and polyurethane material parameters.
The overall mold also consists of three parts: upper and lower molds, polyurethane elastic pads and sheet materials.
The International Journal of Advanced Manufacturing Technology,2019,102(9-12)
The International Journal of Advanced Manufacturing Technology, 2018,96(9-12)

This was a vital step in Al scrap recycling, decided the purity degree of Al melting materials, and closely related to product performance.
Materials Transactions Vol. 48(2007), p. 2219
Journal of Shanghai Jiaotong University, Vol. 39(2005), p. 1787 [13] Humberto Lopes, et al.
Materials Transactions, Vol. 47(2006), p. 1731 [14] Kenichinakajima, et al.
Environmental Science & Technology, Vol. 44(2010), p. 5594.

In order to describe the mechanism of meso-damage of plastic materials and its evolution process, a suitable model should be established to describe the meso-structure of the material[6].
Computational Materials Science, 2012, 53(12): 368–376
China Building Materials Science & Technology. 2016, 25(2):20-21
Development and applicat ion of ductile damage[J].Materials Engineering, 2011,5(1):92-97
International Journal of Fracture, 2000, 101(1/2): 73–97

The Influence of Corrosion Inhibitor BTA on Zinc Flux Yuan-yuan XU 1,a, Yan-fu YAN 1,b, Yang-yang SHENG 1,c, Hong-na WANG 1,d 1College of Material Science and Engineering, He nan University of Science and Technology, Luoyang，China 471003 aemail: xyy19880906@sina.cn ,bemail: yanyanfu@mail.haust.edu.cn,cemail: jiuyongtao@163.com, demail: xiaona1986107@126.com Key words: corrosion inhibitor; Flux; Zn20Sn; Solder; wettability Abstract.
To join different content of the active material in the flux could also improve its corrosion resistance of substrate and wetting effects.
Flux was the key link in modern electronic industry material, flux of the addition of active material would make copper corrosion, there were so many ways to solve the problem of copper corrosion, in metallurgy, adding other metals in copper could improve corrosion resistance of alloy, such as, adding 0.7 wt. % of the tin in copper could significantly improve the corrosion resistant ability, in a variety of methods, adding the corrosion inhibitor in the flux was the most practical [3-4].
[5] Sohn S,Kang T:Journal of Alloys and Compounds Vol,335(2002),P.281-289
[7] Elmorsi M A,Hassanein A M:Corrosion Science Vol,41(1999),P.2337-2352.

It is harder for molten materials in discharge gap to be expelled.
Fewer materials are in the molten state, and fewer materials are splattered onto the surface of tool electrode.
More molten materials stay in the area near the surface of tool electrode.
And compensation of removed materials is accomplished.
Ni: Journal of Manufacturing Science and Engineering Vol. 130 (2008) No. 2, p. 011002-1

Materials and Methods Samples.
Shen: Guangdong Trace Elements Science Vol. 11 (2004), p. 11-15.
Li: Chinese Journal of Ecology Vol. 28 (2009), p. 58-63.
Lin: Fujian Journal of Animal Husbandry and Veterinary medicine Vol. 26 (2004), p. 4-5.
Wang: Journal of Fujian Fisheries Vol. 126 (2010), p. 39-45.

Materials and Methods A.
Acknowledgment *This work was supported by Tianjin Natural Science Foundation (No. 09JCZDJC17800 and No. 07JCYBJC07900).
Puvanakrishnan, “Strain improvement of Aspergillus niger for enhanced lipase production,” The Journal of General and Applied Microbiology, vol. 47, no. 4, pp. 181-186, June, 2001
Fiedurek, “Selective isolation of Aspergillus niger mutants with enhanced glucose oxidase production,” Journal of applied microbiology, vol. 82, no. 5, pp. 648-652, May, 1997
Prabakaran, et al, “Comparative studies on the enzyme activities of wild and mutant fungal strains isolated from sugarcane field,” Indian Journal of Science and Technology, vol. 2, no. 11, pp. 46-49, November, 2009

Experimental Synthesis of zeolite The zeolite was synthesized by alkali melting-hydrothermal synthesis method with CFA (from Nanchang Xinchang Power Plant, Jiangxi province, China ) as raw materials.The details of synthesis process and results were reported in reference [4] Load of copper oxide The copper oxide was loaded on the synthesized zeolite by dipping method.
Canadian Journal of Chemical Engineering, 90 (2012) 207-216
Journal of Environmental Sciences, 21(2009) 127-136
Journal of Nanchang University (Engineering & Technology, 32 (2010)214-217
Measurement: Journal of the International measurement confederatior,46 (2013) 1521-1529.