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Lead strontium zirconate titanate (PSZT) ceramic is as one kind of piezoelectric materials can convert between stress and electric.
Introduction Lead strontium zirconate titanate (PSZT) ceramic as one kind of piezoelectric materials is with excellent piezoelectric properties.
However, elements Mn and Ce are with different effects on the grains growth of the PSZT materials.
By doping element Mn, grains of the PSZT materials will grow and porosity of bulk material will decrease.
Lee, in: The piezoelectric properties and the stability of the resonant frequency in Mn–Cr Co-doped PSZT ceramics, Journal of Materials Science: Materials in Electronics Vol. 10-2 (1999), p. 81

Materials and its characteristics.
The materials is ZG270-500 cast steel.The main parameters are as followed: the elastic modulus is 200GPa, the shear modulus is 79GPa, the poisson ratio is 0.3, the density is 7.8ｇ/cｍ3,the strength limit is 500MPa, and the yield limit is 270MPa.
Rod also marks the values of the yield point corresponding to materials.
Du: Journal of YanShan University.
Liu: Journal of Hefei University of Twchnology(Natural Science).

Preparation and in vitro Degradation of PLLA Super Fiber Membrane Jianxiang Yu Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing ,102617,china yujianxiang@bipt.edu.cn Key words: poly(l-lactic)(PLLA); Bead-string morphology; electrospinning Abstract: In this paper, non-woven micron-nanofiber mats of PLLA were successfully prepared via electrospinning technique, and the mats were characterized by SEM, their degradation performance was studied too.
PLLA is a biodegradable and biocompatible polymer, mainly used in medical suture, repair materials, artificial bone and artificial skin.
Nanofibers prepared by electrospinning with its high porosity, has become the research focus of tissue engineering scaffolds [4,5], porous three-dimensional scaffolds via electrospinning technique which can mimic the natural extracellular matrix, is expected to be the ideal scaffold materials for tissue engineering.
Electrospinning for tissue engineering scafflsds[J]．Materials Science and Engineering, 2007,27: 504-509
(In chinese) [8]Wang Z．Synthesis of Poly(dl-lactic acid) by direct condensation polymerization[J]．Journal of Tianjin University，2000，1:48-50.

In addition, our previous studies have found that ELID grinding produces a stable oxide layer on workpiece materials [3-5].
Chemical corrosive degradation and mechanical abrasion can act synergistically on these materials, and eventually lead to the deterioration of their functions.
Journal of JSPE Vol. 26, No. 4 (1992), p. 273
Steger, in: Titanium ’95, Science and Technology, vol.
Watanabe: Journal of Key Engineering Materials Vol. 257-258 (2004), p. 473

A Multilayer Coating Method to Prepare Borosilicate Glass-aluminum Composite Coating on Cubic Boron Nitride Particle Huanhuan Guo1,a, Bingbing Fan1, Jian Li1,3 and Rui Zhang2,b 1School of Materials Science and Engineering, Zhengzhou University, Henan 450001, P.
Coating CBN particles with suitable materials is an effective way to solve these problems by improving the interface bonding behavior.
Wang, Properties and applications of Ti-coated diamond particles, Journal of Materials Processing Technology, Journal of Materials Processing Technology. 129 (2002) 369-372
Zang, Structure and properties of diamond particles coated with corundum micron powders, Key Engineering Materials. 250 (2003) 94-98
Wang, Interface bonding between Ti-coated CBN and vitrified bond, Key Engineering Materials. 259-260 (2004) 14-18.

Acknowledgement This work is financially supported by the State Key Lab of Advanced Metals Materials of China (No.2012Z-05) and Science Fund for Distinguished Young Scholars of Hebei Province (E2012105005), China.
Reference [1] Zhenqiang, Wang,Xinping, Mao,Zhigang: Strain-induced precipitation in a Ti micro-alloyed HSLA steel Materials Science and Engineering A.Vol.529 (2011), p. 459 [2] Wang X M, He X L, Yang S W: Refining of intermediate transformation microstructure by relaxation processing.
Journal of University of Science and Technology Beijing, Vol.12(3) (2005), p. 248 [4] M.Verdier, M.Janecek, Y.Brechet, P.Guyot: Microstructural evolution during recovery in Al-2.5%Mg alloy.
Materials Science and Engineering A, Vol.248 (1988), P.187 [5] Y.LAN, H.J.KLAAR, W.DAHL: Evolution of Dislocation Structures and Deformation Behavior of Iron at Different Temperatures: Part Ⅱ.
Materials Science Forum, Vol.426-432(2003), p.1307 [8] Shaoqiang YUAN, Guoli LIANG, Xiaojuan ZHANG: Strain-Induced Precipitation in Nb-Bearing Low Carbon Multi-Microalloyed Steel.

Henan University of Science and Technology, Luoyang 471003, China; 2.
Experiment The materials what used in the experiment were alumina fibers produced by luoyang refractory institute .The wet method was adopted to form short fiber preform,and the SEM was used to observe the state of preforms.First, manually cut and broken by machines were used as preprocessing to fibers.Then the fibers with dispersant, binders were put into mould after mixed equality.
Acknowledgements This work has been supported by the Science & Technology development program of Henan province under Grant No. 072102230007, and the fund of the State Key Laboratory of Solidification Processing in NWPU under Grant No.
Fang:Journal of Yancheng Institute of technology, Vol.16 (2003),p.43-45 [3] Garces Gerado, Bruno Giovanni, Wanner Alexander: Acta Materiallia, Vol.55 (2007), p.5389 [4] Cardinal S, R’Mili M, Merle P:Composites Part A , Vol.29 (1998), p.1433 [5] H.B.Ouyang, H.J.Li:Journal Materials Science, Vol. 43 (2008),p.4618 [6] Corrochano J, Cerecedo C: Materials Letters, Vol.62(2008), p.103 [7] Mizumoto M, Ohgai T, Kagawa A :Materials Science and Engineering A, 2005, p.521-413 [8] H.X.
Peng, Z .Fan, : Materials Science and Engineering, Vol.207(2002), p.335

Experimental Experimental instrument, materials and reagents.
The calcium phosphate precipitation could be as a raw material for the production of phosphate fertilizer.
Royer, et al: Journal of chromatography A, Vol. 1175(2007), pp. 197-206
Wang: Environmental science and technology, Vol. 24 (2011), pp. 35-41
Yu: Journal of environmental engineering, Vol. 30 (2012), pp. 34-37

ACI Structural Journal, (1993), 90 (1) : 52 - 60
ACI Structural Journal, (1999), 96(1): 9-18 [4] K.
Journal of Structural Engineering, (2004), 130(11): 1820-1828
Journal of Natural Disasters, (2005), 14(5): 119-126
Journal of Applied Fire Science, (2003), 12(2): 125-135 [8] Changjiang Qiao.

Science. 2003;299:1688-91
Hydrogen storage: Materials, methods and perspectives.
Journal of Natural Gas Science and Engineering. 2013;14:29-33
Journal of Natural Gas Science and Engineering. 2013;15:53-8
QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials.