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Online since: September 2007
Authors: Jian Ming Gong, Tao Xu, Hong Jian Song, Shan Tung Tu
The further EDX spectra inspections showed higher C/Cr/Mo peak between grains, as shown in Figure 4.
Inden: The Journal of Corrosion Science and Engineering Vol. 6 (2003), Conference Paper Number H043 [9] B.
Online since: May 2007
Authors: Shyong Lee, Jian Yih Wang, Chun Lin Chu, Jye Lee, Ruey Yi Lee
Interconnect is a critical component in SOFC as it functions to bridge structurally and electrically a number of sequentially stacked unit cells.
The micrograph shows sharp ant discrete stereo-granular structure, and each grain should be an oxide compound as the SEM/EDS analysis displays significant oxygen content.
Online since: August 2007
Authors: Lian Gao, Yang Qiao Liu
Introduction Colloidal processing techniques provide the possibility to manufacture complex-shaped ceramic products with minimal number of detrimental defects, which require the use of stable slurries with high solid loadings [1,2].
The grain size of the sintered body falls in the range of 1.5~3.0μ m.
Online since: October 2011
Authors: Ai Hui Liu, Guang Hong Zhou, Yu Fu Zhu, Yue Bin Lin
Although a number of efforts have been made to prepare TiO2 nanotube arrays, magnetically doped TiO2 nanotube arrays have been reported rarely, which may be more promising for practical applications.
Most particles were between 10 ~ 15nm in diameterand, and most grains were reunited.
Online since: October 2014
Authors: Ji Soon Kim, Nguyen Thi Hoang Oanh, Hoang Viet Nguyen, Pham Ngoc Dieu Quynh, Tran Quoc Lap
The nanocrystalline and amorphous Al-rich Al–TM–RE alloys with low density and a good corrosion resistance exhibit enhanced properties, such as high strength levels of 1,200÷1,500 MPa [1, 2], compared to the materials in the range of 550÷600 MPa with conventional grain size.
This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 103.02-2012.19.
Online since: December 2011
Authors: Jing Pei Xie, Wen Yan Wang, Luo Li Li, Ai Qin Wang
At the co-action of surface contact with stress and friction, the wear interface of experimental alloy performed a large plastic deformation; rheology was happened to the cracked grain along rolling, and the subsurface of experimental alloy formed deformation layer.
Hypereutectic Al-Si alloy wear resistance not only affect by primary silicon number, size, shape but also by the morphology of eutectic silicon.
Online since: July 2015
Authors: Yuri Kalinin, Alexander Sitnikov, Oksana Tarasova, Haider Al Azzawi
A number of studies [2-5] reported the presence of a large perpendicular magnetic anisotropy above the percolation threshold of some compositions samples.
For effective control of structural anisotropy nanosystems during their production is necessary to eliminate the anisotropy of the ferromagnetic grains of composite.
Online since: March 2007
Authors: Vincent B.C. Tan, L. Dai, S.W. Yang, X.T. Chen, P. Wu
With such a thin barrier film, even minute structural defects like cracks, voids or grain boundaries, can adversely affect its barrier performance.
Fig. 2 shows the total displacement (TD) of the single atoms calculated from anrnrTD N n∑= −−= 1 |)1()(| (1) where N is the number of time intervals in the computation, r(n) is the position of the metal atom at interval n and a is the dimension of the periodic cell. 0 200 400 600 800 1000 1200 1400 0 0.5 1 1.5 2 Time (ps) Speed (m/s) Cu Ta Fig. 1: Speed of Cu and Ta atoms in linear amorphous polymer (LAP) It is noted that although the mass of Ta atoms is only twice that of Cu, the TD of Cu is 4 times that of Ta.
Online since: September 2011
Authors: Shu Bo Xu, Cai Nian Jing, Guo Cheng Ren, K.K. Sun
Despite the large multi-axis CNC gantry high-speed mobile drilling has many advantages mentioned above, however, because the device is a recent development with a large span beam processing equipment, often in high-speed milling process occurs bed of static / dynamic stiffness enough beds Instability of body vibration occurs, rough initial residual stress, the process of mechanical load and thermal load, the deformation and damage cutting tools, reducing the accuracy of drilling, drilling surrounding tissue uneven grain, milling and other difficult to remove debris Problem.
Foreign scholars since the 20th century that began 70 years the finite element method is applied to simulate the cutting process, and achieved certain results, for ordinary bed design and optimization of the structure of a large number of studies have been abroad for reference, and large span gantry Drill press bed design and optimization of the structure is urgently needed to resolve the problem.
Online since: May 2013
Authors: Long Xin, Jun Juan Lv
Table 2 Experimental Procedure of Milling Speed Number 1 2 3 4 5 6 7 8 9 10 11 12 13 Milling speed [m/min] 5 25 50 80 120 160 200 220 240 250 260 280 300 Results and Discussions Fig.3 represented the waveform of three-dimension milling force when Vc=300m/min, Vf=1592mm/min, ap=0.3mm.
The grain becomes thinned and elongated, which makes the extrusion force of the cuttings strong on rake face.
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