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Online since: October 2021
Authors: Yang Wang, Zi Ran Li, Jin Wang
The metallographic photo of the alloy on the rolling plane is shown in Figure 1, which indicates that size of the grains is about 10 μm.
It is obvious that the number of dimples in Figure 4(d) are more than that in Figure 4(b), which indicates that the number of dimples increase when rising temperature.
Acknowledgement This work is supported by the National Natural Science Foundation of China under grant number 11872359.
Online since: April 2007
Authors: Yasuhide Shindo, Fumio Narita
A phenomenological model of domain wall motion is used in computation, and the effects of ac electric field amplitude and frequency, number of layers, and property gradation on the deflection of the cantilever actuators are examined.
Setting β =0 and ∆l = ∆l0 exp(iωt), from Eqs. (8)-(10), we have x1 l l ∆l E0 exp(iωt) Ps γsO x3 Domain wall Domain (a) (b) Fig. 1 Illustrations of (a) grains in piezoelectric ceramics and (b) basic unit of a crystallite with a displaceable domain wall.
Online since: August 2025
Authors: Nisar Ali, Qazi Shakeel Ahmad, Majid Khan, Amir Khesro, H. Alrobei
A number of functional groups that it possesses influence the chemical and biological properties of glucose.
The decrease in the grain size was observed when CdZnS was treated with CTAB and glucose as capping agent [25].
The I-V properties of CdZnS QDs can be affected in a number of ways by the addition of a capping chemical to their surface.
Granular morphology was observed in the SEM images with uniform distribution of grains.
No noticeable deep level emissions exist, indicating that the samples have a lower number of defects.
Online since: October 2024
Authors: Fazal Ur Rehman, Noor Ali, Zeeshan Habib, Sana Taimoor, Nasir Mehboob, Saad Saud Ali Shah
ZnS thin films fabricated by spin coating have larger grains and rough surface with unequal grains scattered over surface in different orientations.
While, zinc sulfide thin films fabricated by RF magnetron sputtering have smooth surface with equal size of grains scattered over the surface of thin film.
Unequal stoichiometric ratio revealed that supplied RF power of 40 W is not enough to sputter the equal number of zinc and sulfur atom [25].
As the atomic mass of sulfur (32.065u) is less than atomic mass of zinc (65.38 u), which can be another reason to that 40 W power is unable to sputter equal numbers of zinc and sulfur atoms due to difference in atomic mass.
As zinc blende crystal structure is denser than wurtzite structure, hence number of atoms in zinc blende structure will be more than wurtzite structure.
Online since: November 2012
Authors: Dong Kui Li, Hai Bin Zuo, Zan Lin Tan, Li Li Jiang
(a) (b) Fig.2 Relationship between PSI and magnetic field intensity(a)tab water(b)aqueous solution Mechanism When recycled water is tap water, appropriate magnetic field strength and the circulating water rate will help CaCO3 homogeneous nucleation and accelerate the crystallization rate, generated the number of small size grains.
When the recycled water is the configure solution of calcium chloride and sodium carbonate, the recycled water is a saturated solution of CaCO3, due to magnetic treatment accelerated nucleation but inhibit nucleation grew up, and magnetic treatment solution to generate a number small size of calcium carbonate grains.
After crystallization of CaCO3 saturated solution proceed out of the magnetic field region, due to the Kelvin effect that the large particles in the solution will continue to grow, the smaller particles should dissolve, the final result will be a small number of grain size which volume the larger [19-23].
Online since: July 2015
Authors: Wen Yan Luo, Yan Liu
The results indicated that the basicity, the number of strong base center and pore volume and pore size of Y-Mg-Al-LDO were increased.
With the increase of Y3+, the diffraction peak intensity in (003) crystal planes are reduced and half peak width of (003) is increased, which denotes that crystallinity decreases and grain size becomes smaller.
The alkali strength is improved and number is markedly increased.
Based on the characterization results, Y3+ doesn’t change hydrotalcite’s layered crystal structure, but other related parameters, i.e. the pore volume, pore diameter, basic strength and the number of strong base center, have increased, which could speed up the diffusion of acetone gas molecules in the mesoporous, provide more catalytic activity center for the catalytic reaction, and further improve the catalytic activity of the catalyst.
Online since: October 2007
Authors: Nobuhiro Tsuji, Takuro Nakamura, Hiromoto Kitahara, Jung Goo Lee
The Al/Fe sheets ARB processed by 1 cycle showed a number of shear bands penetrating the stacked layers.
SPD processes of bulky materials are generally regarded as grain refinement methods.
Online since: July 2011
Authors: Tian Cheng Huang, Gen Mei Li, Li Ling Zhou, Jian Min Yu, Jian Ning Wei, Xue Yun Zhou
Keywords: internal friction; damping behavior; macroscopic pore Abstract A large number of macroscopic pores were introduced into commercially pure aluminum (Al) and Zn-Al eutectoid alloy by air pressure infiltration process to comparatively study the influence of macroscopic pores on the damping behaviors of the materials.
The damping mechanism of the IF peak is the dislocation substructures intersecting and interacting with grain boundaries and as can be interpreted well in terms of a four-parameter mechanical model [5].
Online since: June 2013
Authors: Wei Hua Li, Hua Sheng Chen, Yong Qi
When set I increase the total failed nodes number may increase.
Table 1 is the sampling data per 100 numbers of tests.
Our work is based on the tree node number is a constant, it can extend to situation that node number is a variable.
Acknowledgements This work is supported by China Ministries and commissions project (project number 513150703 and 9140A06040111HK03).
A Fine-grained Parameter Configuration Model for Failure Detection in Overlay Network Systems
Online since: September 2016
Authors: V.A. Nekit, Nikolay N. Ogarkov, Sergey I. Platov
In world practice for the cooling of metal after hot rolling it is applied the cooling lines with different number and length of sections [18 – 19].
For the continuous light-section wire mill 290 has been the analysis of thermal processes in the cooling line, consisting of the various numbers of sections: three, five and seven.
The length and number of active sections were selected to ensure the same final temperature 750°С{TTP}1057 (Fig. 3).
This problem is solved by increasing the number of shorter sections of water cooling.
The kinetics of ferrite nucleation at austenite grain boundaries in Fe-C alloys. // Metallurgical transactions. 19A (1988) 427-440
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