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The effect of SiC content on pressureless sintered Si2ON2-SiC ceramic Zhuxing Tang 1, a*, Huihui Tan 1, b, He Zhang 1, c, Kezhou Xu 1, d, Ying Zhang1, e 1school of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, China atangzx@sdut.edu.cn, btan497976788@163.com, czhanghe1215@163.com, dkezhou81@163.com, ezhangying9134@163.com Corresponding author*: tangzx@sdut.edu.cn, School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, China Keywords: Pressureless Sintering, Si2N2O-SiC Ceramic, SiC content, Microstructure Abstract: The Si2ON2-SiC ceramic was fabricated by pressureless sintering method.
Experimental procedure Raw material Industrial silicon carbide powder (600 mesh), metallic silicon powder, silica powder (600 mesh), MgO powder (purity: 99.99%), nitrogen and ethanol.
The first one is the profile of raw material after milling for 40 h.
Because amorphous SiO2 is used as raw material, none SiO2 peaks are seen in the figure.
Ge: Journal of Inorganic Materials.

Microstructures and Mechanical Properties of SiC-TiB2 Composite Prepared by Pressureless Sintering XinYan Yuea, JianJun Wangb, Qi Sunc and HongQiang Rud Key laboratory for anisotropy and texture of materials (MOE), School of materials and metallurgy, Northeastern University, Shenyang 110004, China ayuexy@smm.neu.edu.cn, bwangjj@smm.neu.edu.cn, c879412173@qq.com, druhq@smm.neu.edu.cn Keywords: SiC-TiB2 Composite; Pressureless sintering; Microstructures; Mechanical properties Abstract.
In order to improve the properties of SiC, some additions such as TiC, B4C and TiB2 [2-5], were used to synthesize SiC-based materials.
Experimental Procedures SiC (d50 = 1 mm), B4C (d50 = 3.5 mm), TiO2 (d50 = 1 mm), C (d50 = 3 mm) and phenolic resin were used as the starting materials.
Then the hardness of the material decreased with increasing the B4C-C content.
Chen, Sintering process of SiC-TiB2 composite, Journal of Ceramics 31(1) (2010) 29-31.

The OCTG material is supposed to be perfect elastic-plastic.
The radial and circumferential stresses can obtain from elastic and plastic mechanics [4]: (2) The von Mises yield criterion is: (3) For τθz=0, the through-wall thickness yield internal pressure Pi is: (4) For a von Mises material, a burst formula for an end-capped OCTG is: (5) It is well known that the yield-to-tensile strength ratio, i.e., Y/T, reflects the strain hardening response of materials, and can significantly influence failure behavior of OCTGs [3,5,6,7].
So this paper develops a criterion that incorporates the influence of Y/T on the fracture failure pressure of casing and tubing without defects and a predictive model for end-capped conditions is first formulated as a function of Y/T for OCTG materials.
Acknowledgements The authors are grateful to the support from Program for New Century Excellent Talents in University (NCET NCET-08-0907) and the China National Natural Science foundation and Shanghai Baosteel Group Corporation (No.: 51074135).
[5] Xiaoguang Huang, Yanyun Chen, Kai Lin, Musa Mihsein, et.: Journal of Pressure Vessel Technology,2007

Semiconducting optoelectronic materials play a very important role during a form of application thanks to their distinctive optical, electrical and magnetic properties.
Modification of those properties of semiconductor materials depends upon the scale, shape, morphology and dimensions of material.
"Nano-structured CdTe, CdS and TiO2 for thin film solar cell applications" Solar Energy Materials and Solar Cells 82, no. 1 (2004): 315-330
"Chalcogenide thin films having nanometer grain size for photovoltaic applications" Research Journal of Chemical Sciences, ISSN 2231 (2011): 606X
Scholarsresearchlibrary. com Archives of Applied Science Research 2, no. 3 (2010): 225-230

Damage and chloride penetration of cement mortar under conventional triaxial compression Zuquan Jin 1 2,a, Qiuyi Li 1,b, Chuan Li3,c, Tiejun Zhao 1,d 1 Qingdao Technological University, Qingdao, 266033, China 2Jiangsu civil engineering materials key lab, Southeast University, Nanjing, 211189, China 3Qingdao No.1 Municipal Engineering Company, Qingdao, 266033, China a jinzuquan@126.com, blqyyxn@163.com, cynlichuan@126.com, dztjgp@263.net Keywords: cement mortar, conventional triaxial compression, deformation, chloride.
Introduction Durability of cracked cement-based materials in serve environment has been of concern to the concrete technologists.
Materials A Chinese standard P.O.42.5 ordinary Portland cement, with a compressive strength of 42.5 MPa at an age of 28 days is supplied by Chinese Shanshui Cement Corporation.
Acknowledgement This work was part of a key project financially supported by the Chinese National Natural Science Foundation (NSF) Grant No. 50708046, No. 50739001, and supported by Jiangsu civil engineering materials key laboratory open Foundation and Shandong National Natural Science Foundation Grant No.
Permeability of stressed concrete and role of fiber reinforcement, ACI material Journal, Vol.104(2007): 70~76

Effect of Curvature on Gas-Particle Flow in Converging and Diverging Supersonic Nozzle Sung-Han Park1, Jeong-Whan Han1,aChang-Hee Lee2 and Hyung-Jun Kim 3 1 School of Materials Science and Engineering, Inha University, inchon, 402-751, South Korea 2 School of Material Science and Engineering, Hanyang University, Seoul, South Korea 3 Welding Research Center, RIST, Pohang, South Korea a jwhan@inha.ac.kr Keywords : Cold spray process, shock wave, simulation, curvature, converging and diverging nozzle Abstract.
Acknowledgements This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Cetury R&D Program funded by the Ministry of Commerce, Inustry and Energy(MOCIE), Republic of Korea.
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P-type Si (100) acts as substrate material.
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Laser surface treatment is an efficient way to improve the surface properties of materials[2].
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