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Table 1.The processing parameters of the system Laser power Scanning speed Spot diameter Lapping rate Carrier gas pressure Powder delivery Focal length 1.8~2.1[kW] 7[mm/s] 2.5[mm] 30[%] 0.2[Mpa] 5[g/min] 300[mm] Materials.
Fig.5 Sketch of microhardness testing points Fig. 6 show that the hardness of each specimen increases along height direction which is basically consistent with the gradient materials design[14].But,it can be seen from each contour line that hardness distribution fluctuates wildly without ultrasonic vibration.
(1) Ultrasonic vibration will help to suppress the formation of pore and reduce its size； (2) By analysing the microstructure of middle cladding layers, it can be found that the grain size is refined for ultrasonic vibration breaking the longer dendrite;Furthermore,in the FGMs specimens, reinforced phase TiC particle size is smaller and get more uniformity distribution; (3) The microhardness tests indicate that gradient materials specimens have good hardness consistency and high mechanical property, which show the ultrasonic vibration can refine the cladding layers and homogenize the microstructure，and then improve its mechanical property.
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Chinese Academy of Sciences Shenyang Institute of Automation Ph.D.

Crack Behaviour in Laminar Ceramics with Strong Interfaces Luboš Náhlík1,2,a, Lucie Šestáková1,2,b and Pavel Hutař 1,c 1 Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Žižkova 22, 616 62 Brno, Czech Republic 2 Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic a nahlik@ipm.cz , b sestakova@ipm.cz, c hutar@ipm.cz Keywords: ceramic laminate, crack propagation direction, residual stress, flaw tolerant ceramic.
KJB200410803 of the Grant Agency of Academy of Sciences of the Czech Republic and grant no. 106/09/0279 of the Czech Science Foundation.
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Experimental Materials and Procedure Experimental Materials.
The experiment was carried out to research if new method can accurately reflect the cutting properties of materials.
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Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Development of Hydroxyapatite Ceramics with Tailored Pore Structure Ulrike Deisinger1, Frauke Stenzel2 and Günter Ziegler1,2 1 Friedrich-Baur-Research Institute for Biomaterials, University of Bayreuth, 95440 Bayreuth, Germany, e-mail: ulrike.deisinger@fbi-biomaterialien.de 2 BioCer EntwicklungsGmbH, Bayreuth, Germany Keywords: hydroxyapatite ceramics, interconnecting porosity, slip casting, bone substitute materials, rapid prototyping Abstract.
Materials and Methods For producing the slurry the commercially available hydroxyapatite powder from Merck, Germany, was used.
Journal Title and Volume Number (to be inserted by the publisher) Green and sintering density values were determined with cast dense cylinders.
By using different types of polymeric pore models with diverse grades of porosity (50 to 96 vol%) and pore sizes (400 to 900 µm) as basic materials the pore structure of the bioceramic (undirected pores as well as defined pore channels) could be tailored according to the requirements of the specific implantation site.
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Characterization of micro-arc oxidation coatings formed on biomedical Ni-Cr-Mo alloy Jilin Xu1,2,a, Dezhen Yu3,b and Junming Luo2,c 1Jiangxi Materials Science and Engineering Center, Nanchang Hangkong University, Nanchang China 2School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang China 3Stomatological Medicine Center, Harbin Institute of Technology, Harbin China axjl505@hit.edu.cn, byudezhen0301@163.com, cluojunming@163.com Keywords: Ni-Cr-Mo alloy, Micro-arc oxidation, Dental casting alloy, Corrosion resistance.
Fig. 3 Potentiodynamic polarization curves of the coated and uncoated samples Table 2 Corrosion current density and corrosion potential of the samples sample Ecorr (V) icorr (A/cm2) UncoatedNi-Cr-Mo alloy -0.259 2.512×10-7 CoatedNi-Cr-Mo alloy 0.016 1.998×10-7 Acknowledgements This study is supported by the Jiangxi Materials Science and Engineering Center of the Corporate Pre-research Project (ZX201001002), the Natural Science Foundation of Jiangxi Province (2010GZC0165) and the Department of Education Research Project in Jiangxi Province (GJJ09199).
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Design of Thermal Transferring of Plane Mould for Low Pressure Sheet Molding Compound Jian Li 1, a，Zhixiong Huang2, b 1 Department of Materials Engineering, Hubei Automotive Industries Institute, Shiyan, 442002; 2 School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070 aemail:lijian_0711@126.com; bemail: letgo508@163.com; cemail: kai__zhang@126.com Key words: Low pressure sheet molding compound，Mathematical simulation，Plane mould，Heat transferring，Optimization design Abstract: Mathematical simulation of mold flow of glass fibers and design of heat transferring of plane mould for low pressure sheet molding compound were analyzed and optimized by MATLAB software in this article.
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