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Effect of the Er on resistivity and spreading properties of Bi5Sb8Sn solder alloy Shuai Li 1,a, YanFu Yan 1, b, LiFang Feng 1,c, HongNa Wang 1,d 1College of Material Science and Engineering, He Nan University of Science and Technology, Luoyang,China 471003 aemail: lyctlishuai@163.com ,bemail: yanyanfu@mail.haust.edu.cn, cemail: fenglifang198306@126.com, demail: xiaona1986107@126.com Keywords: quaternary alloy;rare earth Er; resistivity;spreading area Abstract: In this paper a novel quaternary alloy is formed by adding a small amount of rare earth Er(RE) into Bi5Sb8Sn solder alloy to improve its technological properties.
In this paper, a new Bi5Sb8SnRE quaternary alloy was formed by adding different contents of Er which could alternate high-lead solders and the high-cost Au-based solders to speed up China’s lead-free process. 2 Experiment procedure 2.1 Solder preparation The pure Bi, Sb, Sn and Er with purity of 99.95% were used as raw materials.
References [1] Z T Hu, D R Xu: Electronics Process Technology Vol. 26(2005), P. 125-128 [2] J Glazer: Journal of Eletronic Materials Vol, 23 (1994), P. 693-697 [3] Y C Liu, J W R Teo, S K Tung and K H Lam: Journal of Alloys and Compounds Vol. 448(2008), P.340–343 [4] C H Du,F Chen and Y F Du: Electronic Components and Materials Vol. 123(2004), P. 34~36 [5] J Glazer: Journal of Eletronic Materials Vol,23 (1994), P. 693-697 [6] L F Feng, Y F Yan and X X Guo: Materials Science Froum Vol. 610-613(2009), P. 537-541
[8] B Li, Y W Shi and Y P Lei: Journal of Electronic Materials Vol. 34(2005), P. 217

Journal of Materials Processing Technology. 189 (1-3) (2007) 237-241
Materials Science and Engineering: A. 454-455 (2007) 300-309
Materials Science and Engineering: A. 528 (13–14) (2011) 4732-4739
Computational Materials Science. 73 (0) (2013)15-23
Materials Science and Engineering: A. 552 (0) (2012) 502-513

One of the promising ways is the use of rubber waste as a part of various construction materials[1],[4],[5].
They usually produce low-quality materials due to the deterioration of chemical compatibility and/or interfacial interaction between rubber crumb particles and the elastomer matrix.
Nielsen, ‘Models for the Permeability of Filled Polymer Systems’, Journal of Macromolecular Science: Part A - Chemistry, vol. 1, no. 5, pp. 929–942, Aug. 1967, doi: 10.1080/10601326708053745
Hanhi, ‘Feasible incorporation of devulcanised rubber waste in virgin natural rubber’, Journal of Materials Science, vol. 24, no. 41, pp. 8301–8307, 2006, doi: 10.1007/s10853-006-1010-y
Tapale, ‘Comparative analysis of ultrasonically devulcanised unfilled SBR, NR, and EPDM rubbers’, Journal of Applied Polymer Science, vol. 88, no. 2, pp. 434–441, 2003, doi: 10.1002/app.11741

Test materials and methods Test device and sources of the sludge.
Journal of Shenyang Jianzhu University ( Natural Science).2006,22(5):825-828 [2] Wu Junqi , Yu Li, Cao Jian.
Journal of Shenyang Jianzhu University ( Natural Science). 2005,21(1):47-50
Environmental Science andManagement. 2005,30(4):42-44
Effect of Extra—cellular Polymeric ubstances (EPS)on Bio—flocculation and Settlement of Activated Sludge[J].China Safety Science Journal. 2003，13（9）：31-34.

Musa: Journal of Al-Nahrain University Vol. 17 (2014), p. 108-115 [5] S.
Kardos: Polymer Engineering and Science Vol. 16 (1976), p. 344-352 [7] G.
Zak, et.al.: Journal of Manufacturing Science and Engineering Vol. 3 (1997), p. 17-24 [8] Y.J.V.
Martone, et.al.: Composites Science and Technology Vol. 71 (2011), p. 1117-1123 [12] L.
Nicodemo: International Journal of Polymeric Materials and Polymeric Biomaterials Vol. 3 (1974), p. 229-243 [13] F.T.

Experiments Materials The thermoplastic polymer PP, used as matrix material, was supplied by the Primepolymer(Japan).
Journal of Thermoplastic Composites Materials.
Kokta journal of Applied Polymer Science vol. 48, pp.2181-2196 (1993) [10] L.
Ansell, Journal of Applied Polymer Science, 84 (12), pp. 2222–2234 (2002) [11] A.
Sain Journal of Applied Polymer Science Vol.103, pp 2432–2441 (2007) Materials Research (2003)

The paper makes a comparison of the compressive strength, splitting strength and impermeability test of concrete specimens with two different materials-XYPEX(waterproof material)and steel fiber, and also studies the effect of the two different materials on concrete compressive strength, splitting strength, impermeability and relevant laws, along with discussing the reaction mechanism because of the addition of this two materials.
Experiment Test Materials.
Yu: Journal of Northwest Hydroelectirc Power, 2005 No.4.
Bian: Science and Technology Innovation Herald, 2010 No.24, p.52.
Zhang: Science and Technology Information, 2009 No.23, p.41-43.

The pressure and the inside defects of the material during rheo-diecasting is realized.
[2] Y.L.Kang, W.M.Mao, Z.L.Hu, Semi-solid metal processing theory and technology, Science Press, Peking, 2004
[3] S.S.Xie, J.Shen, X.J.Zhang, Journal of Plasticity Engineering, 7 (2000) 6-10
[5] H.Yan , W.W.Zhuang, Journal of Materials Processing Technology, 187 (2007) 349-353
[7] Escodar de Obaldia E, Felicelli S D, Journal of Materials Processing Technology, 191 (2007) 265-269

Meinders2, c 1 Materials Innovation Institute, P.O.
In this work, Lemaitre’s anisotropic damage model has been slightly modified for sheet metal forming applications and for strain rate dependent materials.
The formability of these materials is limited mainly due to damage development [1].
Geers, Mechanics of Materials Vol. 41(2009), p. 1264–1276
Lim, International Journal of Mechanical Sciences Vol. 50(2008), p. 918–931

Polyurethane foam belongs to the group of light, but quite strong materials, and has very low thermal conductivity, low vapour permeability and high adhesion to any materials.
Today, the study of the behavior of these materials is based mainly on experimental research.
The change in Young's modulus for the studied materials was 32%, 22%, and 29%, respectively, for materials with a weight ratio of 1:1, 1.2:1, and 1:1.2, respectively.
Fusek, Loading and unloading curve of foam material based he compression test, Journal of Mechanical Engineering. 69, 3 (2019) 3-8
Lei, Research the Static Compression Test of Polyurethane Foam / Honeycomb Paperboard Composite Material, The Open Materials Science Journal. 9 (2015) 64-70