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The distribution materials are 25% glass fiber, 15% fiberglass +5% graphite and 60% tin bronze, respectively.
Table 2: Experimental data on grinding of titanium alloy plate and different PTFE pin Substrate Roughness (Ra/mm) Pin length change(mm) Average friction coefficient (total integral averaging) Average friction coefficient for stable stag (20～50min) Single specimen average Single specimen average Single specimen average For grinding materials: 15% Glass fiber +5% graphite 0.126 0.938 1.098 0.106 0.110 0.098 0.103 0.110 1.251 0.109 0.096 0.112 1.105 0.116 0.116 For grinding materials: 25% Glass fiber 0.134 1.140 1.061 0.116 0.113 0.110 0.108 0.122 0.861 0.097 0.088 0.129 1.181 0.125 0.126 For grinding materials: 60% Tin Bronze 0.115 1.407 1.273 0.122 0.119 0.119 0.117 0.202 1.055 0.115 0.116 0.113 1.357 0.119 0.116 Fig 3: Friction coefficient of titanium alloy plate and different PTFE in the process of grinding Figure 4 shows the wear of a titanium alloy plate gringding with different reinforced PTFE materials.
Ramulu, Materials & Design, 141(2018) [2] Manmeet Kaur, K.
Singh, Materials Science and Engineering: C, 102(2019) [3] H.
Falentin-Daudré, Acta Biomaterialia, 83(2019) [4] Wei Chen, Kui Wang, Yimin Gao, et.al, International Journal of Refractory Metals and Hard Materials, 76(2018) [5] Xiaojia Yang, Cuiwei Du, Hongxia Wan, et.al, Applied Surface Science, 458(2018)

Q345 steel is one of widely used materials in china.
Table 3 Material constants for Q345 steel weld materials i c（i） r（i） χ（i） 1 2041 77 100 2 408.2 57 100 3 102.1 63.1 100 4 20.41 108 100 5 0.08165 457 100 The two-dimensional FE mesh model is created as shown in Figure 2.
Sehitoglu: Journal of Applied Mechanics Vol. 63 (1996), p.720 [9] Y.
Sehitoglu: Journal of Applied Mechanics Vol. 63 (1996), p. 726 [10] X.Wang, Z.Gao, T.Zhao and Y.
Jiang: Journal of Pressure Vessel Technology 131, (2009), p. 1

Introduction The large diameter thin-walled titanium alloy tube with small bending radius meets the application requirements of aerospace components with lightweight, high strength and high performance from both materials and structures aspects.
Zhang: Materials Science and Engineering A Vol. 486 (2007), p.596
Li: The Chinese Journal of Nonferrous Metals Vol 18(2008), p. 1396
Zeng: Engineering Materials Technical Manual (China Machine Press, Beijing, 2002) [9] P.
Koppka: Journal of Materials Processing Technology Vol. 146 (2004), p. 61

Screens and shields can also be made of textile materials (woven and knitted fabrics, non-woven materials) with various structures of conductive yarns/threads, which consist of synthetic and natural fibers and as well as metals and even carbon [4, 5, 6, 7, 8].
Experimental Methods Materials.
Journal of the Royal Instituteof Public Health, lpp. 113-124
Elsevier, 2004, International Journal of Hygiene and Environmental Health, Volume. 207. 1438-4639/04/207/02-141
[11] Measuring the shielding effectiveness of large textile materials in an anechoic chamber, Kowal, M., Kubal, S., Zielinski, R.

(3) Springback is calculated on the rotation free shell elements. 2.1 Membrance nodal solution In the inverse approach, several assumptions are made for sheet metal forming, such as proportional loading, incompressibility of materials, and the Hencky deformation theory of plasticity is adopted.
The material used is DP600, its thickness is 1.6 mm.
Acknowledgements This project is supported by National Natural Science Foundation of China (No. 50575080) and National Science and Technology support plan (No. 2006BAF01A43).
Huh: Journal of Materials Processing Technology Vol. 80-81 (1998), p.76-82
Brunet: International Journal for Computer-Aided Engineering and Software Vol. 23 (2006), p.469-502

Effects of Cr on microstructure and hardness of HVOF-sprayed WC-Co coating Lijun Wang a,1, Hui Chen a,2, Yan Liu a,3, Guoqing Gou a, Da Li a a.School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China 1 lijun-123458@163.com 2xnrpt@163.com 3liuyanzt@163.com Key words: WC-12Co coating; WC-10Co-4Cr coating; porosity; X-ray diffraction; micro-hardness; Abstract: In the areas of remanufacturing and working conditions with requirements of wear and corrosion resistance, the WC-Co thermal spray coating has a wide applications.
Experimental procedures Materials.
Journal of Xi’an Jiaotong University.,28(1994):39-45
Rare Metal Materials and Engineering. 36(2007)731-734.
Journal of Materials Science & Engineering. 3(2006)354-357.

Introduction The NdFeB is an important functional materials of the computer, information and communications, aerospace, office automation, home appliances and other areas of modern science and technology.
To acquire the NdFeB materials, the hydrogen decrepitation process is widely used.
New materials industry.2013,1,25-32
Metallic Functional Materials. 1996, 5, 169-172
Journal of Atlovs and compounds 450.2008,L1-L3

The experimental materials, devices and methods The experimental materials.
The basic property of experimental materials is shown in Table 1.
Table 1 The basic property of experimental materials Materials Total solid (%) Volatile solids (%) Moisture content (%) Straw 84.33 94.83 15.7 Pig dung 4.8 58 95.2 The experimental device.
Beijing: Science Press, 1990.
Journal of Agro-Environment Science, 2007, 26(1):335-338.

The selection of damping materials involves using materials with high damping capabilities to suppress the generation of vibrations and to block the propagation of vibrations through internal loss[1, 2].
Consequently, the demand for damping materials is on the rise[3].
In this context, metal materials with damping capabilities are expected to play a role as high-performance materials, and the necessity for damping materials is acutely felt[3].
Experiment In materials science, contact angle measurement is a method used to characterize and measure the surface energy of solids and liquids.
Journal of Materials Science. 28 (9): 2395–2404

Mercury of cement plants comes mainly from coal and raw materials.
Depending on the different size and raw materials, of the plants, and mercury emissions under different conditions is not the same, so there is no mature mercury removal technology can be applied directly.1 Overview Mercury is a toxic heavy metal and non-essential element for the organism.
After dust removal the concentration of Hg in flue gas is different ,due to different Hg content of raw materials.
The more higher Hg content raw materials contain, the more higher the Hg concentrations are in flue gas.
[11] Bo Li, Yuliang Cai, Meijing Xin, et al:J．Research & Application, 2010,p.55 [12] Yindan Zhang, Weiguo Pan, Weiguo Zhou, et al:J．Journal of Shanghai University of Electric Power.