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Online since: December 2013
Authors: Jing Jie Sha, Lei Liu, Yun Fei Chen, Gen Sheng Wu
The count number distribution of spike data point is present in Fig 2 (b) insert.
As shown in Fig. 2, the count number of spike data point is much less than that of the base current.
The experimental Si3N4 surface shows the hydrophobic wettabilitybecause of the adhesion of grain or particles.
As shown in Fig. 2, the count number of spike data point is much less than that of the base current.
The experimental Si3N4 surface shows the hydrophobic wettabilitybecause of the adhesion of grain or particles.
Online since: July 2019
Authors: Won Jae Lee, Jung Woo Choi, Myung Ok Kyun, Kap Ryeol Ku, Jung Doo Seo, Chae Young Lee, Jung Gyu Kim, Sang Ki Ko, Byung Kyu Jang
The average grain size and density of SiC powder(fabricated by Acheson method) used in this study are 200mm and 1.76g/cm3.
Nishino et al. [4] reported that the number of small periodic peaks between the main peaks related to the double diffraction effect could represent the polytype of SiC crystal; 3 peaks for 4H-SiC, 5 peaks for 6H-SiC and 4 peaks for 15R-SiC.
The exact MPD (micropipe density) and EPD (etch pit density) numbers of SiC crystals grown by the conventional method and modified method were counted in etched images.
Nishino et al. [4] reported that the number of small periodic peaks between the main peaks related to the double diffraction effect could represent the polytype of SiC crystal; 3 peaks for 4H-SiC, 5 peaks for 6H-SiC and 4 peaks for 15R-SiC.
The exact MPD (micropipe density) and EPD (etch pit density) numbers of SiC crystals grown by the conventional method and modified method were counted in etched images.
Online since: August 2013
Authors: Su Li, Jun Shou Li, Fang Zhao, Ming Hui Ye
The initial Samples were numbered from Y1 to Y6 after milling in order, and then numbered from S1 to S6 after leaching with 9.3M HCl[7] in order.
As a result of the addition of Mg powder, the diluents, MgO, crystallized in the grain boundary of TiB2 crystal, which prevented the growth of initial TiB2 nucleus.
As a result of the addition of Mg powder, the diluents, MgO, crystallized in the grain boundary of TiB2 crystal, which prevented the growth of initial TiB2 nucleus.
Online since: September 2016
Authors: Xiao Ping Lin, Yun Dong, Gui Fang Sun, Jie Ye, Bo Li, Gao Peng Xu, Fei Teng, Jie Han
The research indicates that the addition of Cu could promote the formation of a uniformly distributed and rod-shaped strengthening phase β' 1-MgZn2 with a high number density[13-15].
On the basis of a large number of references[9,11,14-15], the content of Cu is identified as 1.0wt.%.
By comparison, with the increase of aging time, the eutectic structure at the grain boundary is dissolved, and tends to be more granular, and the shape becomes more rounded.
On the basis of a large number of references[9,11,14-15], the content of Cu is identified as 1.0wt.%.
By comparison, with the increase of aging time, the eutectic structure at the grain boundary is dissolved, and tends to be more granular, and the shape becomes more rounded.
Online since: December 2016
Authors: Petr Konvalinka, Karel Kolář, Zdeňka Bažantová, Jiří Litoš, Miroslav Petrtýl
Introduction
Current approach to the formulation of composite materials is based on the application of various fillers with grain or fiber character from natural and artificial resources.
The contribution of mineral additives lies in the optimizing of granularity as well, that is why number of inert additives, e.g. milled limestone, silica powder, are used.
The usage of commonly produced silicate types of cement, declared according to adequate standards, in CR it is CSN EN 197-1 [1], brings the number of complications for the formulation of advanced special cement based composites because of fundamental standard requirements related to their physicochemical properties.
The contribution of mineral additives lies in the optimizing of granularity as well, that is why number of inert additives, e.g. milled limestone, silica powder, are used.
The usage of commonly produced silicate types of cement, declared according to adequate standards, in CR it is CSN EN 197-1 [1], brings the number of complications for the formulation of advanced special cement based composites because of fundamental standard requirements related to their physicochemical properties.
Online since: January 2013
Authors: Su Juan Li
Other test material were: Deng Ta PO 32.5R ordinary portland cement, medium sand, gravel with the grain size of 30 mm.
All the test piece and their numbering, also the reinforcement measure were listed in Table 2.
Table 2 Listing of test piece strength grade test piece numbering axial compression ratio reinforcement measure C20 1N1 — — 1N2 — — 1B-3 0.3 One layer BFRP 1B-4 0.4 One layer BFRP 1B-5 0.5 One layer BFRP C25 2N1 — — 2N2 — — 2B-3 0.3 One layer BFRP 2B-4 0.4 One layer BFRP 2B-5 0.5 One layer BFRP Test Result and Analysis Failure Phenomenon of Test Piece.Test results showed that: the tensile failure of FRP cloth caused the destruction of the specimen.
All the test piece and their numbering, also the reinforcement measure were listed in Table 2.
Table 2 Listing of test piece strength grade test piece numbering axial compression ratio reinforcement measure C20 1N1 — — 1N2 — — 1B-3 0.3 One layer BFRP 1B-4 0.4 One layer BFRP 1B-5 0.5 One layer BFRP C25 2N1 — — 2N2 — — 2B-3 0.3 One layer BFRP 2B-4 0.4 One layer BFRP 2B-5 0.5 One layer BFRP Test Result and Analysis Failure Phenomenon of Test Piece.Test results showed that: the tensile failure of FRP cloth caused the destruction of the specimen.
Online since: May 2004
Authors: Muharrem Timuçin, G. Cambaz
In general, ceramic humidity sensors are porous and
electrically resistive bodies whose conductivity changes due to water adsorption processes
occurring on their surface, on grain boundaries and in pores [2].
When compared with M1, it is seen that the addition of 9 % Na2O did not show a pronounced effect on the average pore size and surface area, but increased the total porosity and the number of pores that are smaller than 20 nm.
When compared with M1, it is seen that the addition of 9 % Na2O did not show a pronounced effect on the average pore size and surface area, but increased the total porosity and the number of pores that are smaller than 20 nm.
Online since: February 2015
Authors: Guang Sheng Cao, Pei Long Wang, Guo Jing Miao, Hong Fei Cui
Particle size distributions of injection water impurities
Injection impurities of grain size analysis is mainly by laser granulomata, through light scattering and refraction principle , quantitative analysis of the particle number and particle size of a certain volume of solution, to determine the distribution of solid phase particles[1-2].
Online since: September 2018
Authors: Denis V. Karpenko, Alisa V. Karpenko
Considering the multimillion volumes of asphalt mix production in Russia and the need of many regions to use modified asphalt pavement with extended operation temperature interval, those numbers increase enormously.
But with the addition of fine-grained rubber pavement becomes stronger and more resistant to the high-temperature rutting due to its high flexibility.
But with the addition of fine-grained rubber pavement becomes stronger and more resistant to the high-temperature rutting due to its high flexibility.
Online since: February 2012
Authors: Zhi Yi Liu, Lin Yan Xia, Di Er Yu, Yan Xia Gu, Yun Dong Zhou, Li Wen
Evidently, Cu atoms refine the grain size by optical observation of Al-4.5%Cu-TiB2.
Theorical formation System of any number N of composites can be fitted with N (N-1) parameters obtained from binaries model as [5]: (1) In binaries system, equation deduced into the form below: (2) Fan et.al [4] solved the problem of calculating the pair of parameters and by setting the values of and approaching to zero.
Theorical formation System of any number N of composites can be fitted with N (N-1) parameters obtained from binaries model as [5]: (1) In binaries system, equation deduced into the form below: (2) Fan et.al [4] solved the problem of calculating the pair of parameters and by setting the values of and approaching to zero.