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Online since: June 2015
Authors: Esra Öztürk, Nilgun Ozpozan Kalaycioglu
The microstructures of the phosphor consisted of regular fine grains with an average size of about 0.7-2.5 μm.
Acknowledgement This work was supported by Erciyes University EUBAP under project number FBD-09-804.
Online since: May 2016
Authors: Valentina Loganina, Ludmila V. Makarova, Roman V. Tarasov
In the continuation of further studies grain-size and mineralogical composition of fillers were estimated.
The wave number [cm-1] Absorption Fig. 2 Infrared spectrum of the synthesized filler sample.
Online since: March 2012
Authors: Dong Man Yu, Xiao Jing Li, Zhong Ya Wang
If the total number of the external load on the beam is PN, array MPQ of the PN line and four columns will be used for storing load.
Computersimulation of the structure and dynamical properties of grain boundaries in a nanocrystalline model material.
Online since: January 2018
Authors: Jaroslava Koťátková, Monika Čáchová, Petr Konvalinka, Eva Vejmelková, Robert Černý, Magdaléna Doleželová
The aggregate was composed of four fractions of silica aggregate with the maximum size of grain being 4 mm and supplemented with fine particles – silica flour.
The number behind the dash means the percentage of the pozzolanic material added.
Online since: August 2013
Authors: Jia Wei Wang, Chang Yuan Lu, Yong Zhen Jia, Chang Sheng Lv
The scholars had done a large number of studies on this aspect, and these research showed that the sulfides could not be gotten rid of completely and prevented from entering the precipitation process[4], it was necessary to study the influence of sulfides on the precipitation process.
With the increasing of Na2SO4 concentration, the particles size increased primitively, then the influence became small, and when the Na2SO4 concentration arrived 17g/l, the addition of Na2SO4 would lead to the products grain refining.
Online since: April 2009
Authors: Cui E Wen, Jian Yu Xiong, Yun Cang Li, Peter Hodgson
The Sol-gel process is one of the most promising methods, which has the benefit of phase and structure homogeneity; finer grain microstructure and lower temperature of crystallisation.
Therefore, the HA coated Ti-Nb sample exhibited better in-vitro bioactivity. 0 2000 4000 6000 8000 10000 12000 14000 Cell number Well Ti-Nb sample Well+sample Coated Ti-Nb Uncoated Ti-Nb Figure 3.
Online since: April 2009
Authors: Jian Feng Yang, Zhi Hao Jin, Zhi Chao Xiao, Yong Hui Zhang, Jiping Wang
The polymer precursor impregnation pyrolysis (PIP) process was also used to fabricate the C/SiC brake materials by the four brake companies in the US [4], however, the PIP process not only resulted in a large number of micro-cracks and pores in the ceramic matrix for pyrolysis but led to a long manufacturing cycle for obtain the dense composites.
The SiC was probably damaged by fatigue: the SiC grains debonded and so fibers loosed by repeated flexion, as shown in Fig.4 (b).
Online since: March 2012
Authors: Cheng Xi Lei, Zhong Wen Xing, Tian Gu
The number of parts produced by HSS was about 3 million parts per year in 1987, and it raised up to 107 million parts per year in 2007 [1].
In Eq. 1, f(G), f(T) and f(Xi) describes the impact on phase transformation of austenite grain size, temperature and volume fraction of phase.
Online since: June 2005
Authors: Won Seon Seo, Hwan Kim, Myung Hyun Lee, Dae Joon Kim, Kwon Yong Lee
Fig.2 Multi-stations pin-on-disk wear testing machine Results and Discussion The variation of mean weight loss (wear) of UHMWPE pins against alumina, zirconia and zirconia/alumina composite disks during the entire test duration was plotted in Fig. 3(a) as a function of number of cycles and two different kinematic motions.
This can be interpreted by that micro pitting wear of ceramic surface occurs through the fatigue grain boundary failure under the cyclic contact stress.
Online since: May 2010
Authors: Dong Sik Bae, Seong Jai Cho, Min Cheol Chu, Min Yeong Kim
The median particles of a given grain size in a given area.
It may be assumed that the reverse micelle aggregates present in the solution are not affected by the addition of TEOS molecules or by subsequent reactions, and in particular that the aggregation numbers of the micelles remain unchanged.
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