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Powders of Fe314 and base plates of R235 steel were taken as sample materials.
References [1] Shanping Lu, Hidetoshi Fujii , Kiyoshi Nogi: Marangoni convection and weld shape variations in Ar–O2 and Ar–CO2 shielded GTA welding Materials Science and Engineering A. 380 (2004) ,290–297
[2] wang hong, Yaowu Shi, Shuili Gong: Effect of pressure gradient driven convection in the molten pool during the deep penetration laser welding．Journal of Materials Processing Technology．184(2007), 386—392
Materials Science and Engineering A. 379 (2004), 313–320
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It is an attractive and cheap way of obtaining new structural materials [5, 6].
Journal of Membrane Science, 2008,322(1): 171-177
Journal of Membrane Science, 2005,262(1-2): 60-8
Journal of Membrane Science, 2008, 315(1): 36-47
Journal of membrane science, 2004, 235(1): 73-86

Stress and System Energy in Erosion Process for Brittle Materials Xiaoqing Lian1,a, Xiumei Feng1,b, Mingxue Jiang1,c 1School of Material Science and Engineering, Xi’an University of Architecture and Technology,Xi’an ,Shanxi,710055, China alianxiaoqing0304@126.com, bfengxm1973@126.com, cmingxuejiang@163.com, Keywords: Solid Particle Erosion, Stress, System Energy, Impact Angle, Brittle Materials, Finite Element Method Abstract.
The latest prediction equations for erosion of ceramic materials were proposed by Y.I.Oka[7],which were verified in cases of metallic materials.
Although many studies on the solid particle erosion of brittle materials may be found[5-10], most of their targets were homogeneous materials.
They were heterogeneous brittle materials other than homogeneous brittle materials.
The erosion rate of brittle materials is at its maximum at normal incidence at room tempetature [5-10], which is different from ductile materials whose maximun erosion rate occurs at shallow impact angles.

Yang, science 292 (2001) 1897
Yang, Advanced Materials 14 (2002) 158
Liu, Advanced Materials 14 (2002) 215
Oyama, Science of Advanced Materials 5 (2013) 803
Vayssieres, Advanced Materials 15 (2003) 464

Improving conductivity of phase change materials.
Fig.6 Encapsulation of phase change materials (4) Composite phase change material is to make different phase change materials combined together by means of composite material technique, in order to overcome the shortage of lower thermal conductivity and storage volume etc of a single phase change material.
International Journal of Heat and Mass Transfer.
Vol.32(2007), p.2201 [11] H.Chen, D.S.Zhu, X.L.Qi, et al: Materials Review (in Chinese).
Vol.74( 2003), p.141 [21] X.Q.Zhu, J.Hu, Y.F.Yang, et al: Advanced Materials Research.

Dubinko, et al.: Journal of nuclear materials Vol. 385 (2) (2009), p. 228-230
Surh, et al.: Journal of nuclear materials Vol. 325 (1) (2004), p. 44-52
Xiusan: Advances in Materials Science Vol. 5 (1) (1991), p. 22-28
Xiyan, et al.: Journal of Chongqing University: Natural Science Vol. 31 (12) (2009), p. 1342-1345
Eldrup, et al.: Journal of nuclear materials Vol. 307 (2002), p. 912-917.

Experimental The materials Li1+xV3O8 were prepared by LiOH, NH4VO3 and C2H5NO2.
The materials Li1+xV3O8 were spreaded on Al foils and dried under vacuum.
Therefore, the materials prepared via this new method show better capacity retention, and the cycle life of the material with a V/C2H5NO2 ratio of 1.0/1.0 remains the best .
Acknowledgements This work was financially supported by the Education Department of Anhui province Natural Science Foundation(050601D2) References [1] Kaoru Dokkoa, Natsuko Nakatab, Kiyoshi Kanamurab, Journal of Power Sources. 189 (2009), p. 783
JOURNAL OF RARE EARTHS. 5,26 (2008) , p. 722

Experiments The absorption coefficient is the efficiency of materials on sound absorption, a common characteristic of building or sound insulation materials.
For natural sound absorptive materials, most materials were made in form of fiber, compacted as board or as flexible layers [12–14].
Adachi, The development of sound absorbing materials using natural bamboo fibers, High Performance Structures and Composites. (2002) 157–166
Sun, Sound absorption properties of ceramic hollow sphere structures with micro-sized open cell, Materials Letters. 134 (2014) 268–271
Fujita, Performance improvement of sound-absorbing materials using natural bamboo fibers and their application, in: High Perform.

Metallurgical and Materials Transactions A,vol. 4,no.2, pp.3218-3228, 2011
M.Ghaini, “Effect of friction stir welding speed on the microstructure and mechanical properties of a duplex stainless steel,” Materials Science and Engineering: A, vol.4, no.96 (1-2), pp262-268, 2008
F. dos Santos, “Influence of rotation speed and axial force on the friction stir welding of AISI 410S ferritic stainless steel,” Journal of Materials Processing Technology, vol.2,no.62, pp.430-436, 2018
Zhao, “Effect of rotation speed on microstructure and mechanical properties of friction-stir-welded 2205 duplex stainless steel,” Advances in Materials Science and Engineering,vol.20,no. 20, pp.1-13,2020 [29] M.
Rodrigues, “Modeling torque and temperature in friction stir welding of aluminium alloys,” International Journal of Mechanical Sciences, vol.1, pp.82, 105725, 2020

As solution, manufacturers are keen in developing novel materials that incorporate the best features from both organic and ceramic based materials.
Tsubone, Fujitsu Science and Technical Journal, 43(1): pp. 50-58(2007) [16] C.
Chuang, Journal of Electronic Materials, 37(11): pp. 1742(2008) [17] P.
Lee, Journal of Electronic Materials, 38(10): pp. 2106-2111(2009) [18] R.
Made, Journal of Electronic Materials, 38(2): pp. 365-371(2009) [19] S.