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Study on Energy-Saving Mode of High-Quality Anti-Corrosion Micro Arc Oxidation Coatings on Magnesium
Online since: October 2010
Authors: Jun Zhao, J.J. Xi, Wei Wang, Pei Nian Wu
On the basis of a large number of experiments, It is found that the growth of
the sample film of good growth also have good growth curve of voltage time.
For good performance of oxidation film, in the view of technology it needs to meet the followings: Determine the right solution system, rapidly active solution; Sample as possible to reduce the time in the passivation zone; Ensure that sample matrix react adequately in the micro-arc zone, so as to promote the growth of film close-grained and thin; Maintain a reasonable processing time for large arc voltage relationship; Avoid the big spark discharge breakdown.
For good performance of oxidation film, in the view of technology it needs to meet the followings: Determine the right solution system, rapidly active solution; Sample as possible to reduce the time in the passivation zone; Ensure that sample matrix react adequately in the micro-arc zone, so as to promote the growth of film close-grained and thin; Maintain a reasonable processing time for large arc voltage relationship; Avoid the big spark discharge breakdown.
Online since: May 2006
Authors: Xing Dong Zhang, Y.M. Jiang, L. Zheng, J.M. Luo, T. Yuan
With the increasing of the period, the
number of blood vessels in the holes increased, and more densely distributed ingrown connective
tissue was gained.
HA coated titanium showed the best compatibility in the chosen materials, which confirmed that mechanical ingrowth and strong attachment of subcutaneous tissue to HA grains had prevented gap formation or slippage between the implant and the tissue [8].
HA coated titanium showed the best compatibility in the chosen materials, which confirmed that mechanical ingrowth and strong attachment of subcutaneous tissue to HA grains had prevented gap formation or slippage between the implant and the tissue [8].
Online since: July 2011
Authors: Anucha Watcharapasorn, Sukanda Jiansirisomboon, Panupong Jaiban, Ampika Rachakom, Suwapitcha Buntham
Space group number is 62 (Pnma) and its lattice parameters are a = 5.7742, b = 8.1443, c = 5.7037, a = 90o, b = 90o and g = 90o.
It was found that this powder morphology seemed to have 2 characteristics containing equiaxed and plate-shaped grains.
It was found that this powder morphology seemed to have 2 characteristics containing equiaxed and plate-shaped grains.
Online since: July 2011
Authors: Gen Sheng Li, Shang Yu Yang, Xiu Juan Yang, Xiang Zhen Yan
For a zero-mean stationary Gaussian random response process, the power reliability[9,10] based on the first excursion failure criterion can be expressed as Eq.2 and Eq.3
Unilateral boundary model
(2)
Bilateral boundary model
(3)
Deep & ultra-deep well reliability for drill string system
The drill string is composed of a number of drill pipe, drill collars and drilling tools.
There are a lot of pores, micro-cracks and grain boundaries in carbonate rock which reduced the mechanical strength and stability.
There are a lot of pores, micro-cracks and grain boundaries in carbonate rock which reduced the mechanical strength and stability.
Online since: March 2015
Authors: Chun Xia Zhao, Chun Hui Zhang, Tan Meng, Shan Shan Han, Jia Yu Jiang, Qing Xin Yin, Mei Tong Guo, Bo Quan Shao, Gui Juan Rong
The XRD spectra peaks of synthetic zeolite were slender and higher than natural zeolite indicated the smaller purity grains and better ammonium ions removal rate.
The surface of WWS zeolite was covered by a number of rods, which was the precipitation induced by seed crystal.
The surface of WWS zeolite was covered by a number of rods, which was the precipitation induced by seed crystal.
Online since: August 2011
Authors: Xiao Hong Fan, Bin Xu, Cai Gao
At 2min, since the sufficient diffusion of carbon atoms, a number of well-distributed cementites appear showing almost entirely strips, and getting longer and thicker.
However some smaller diamond crystal grains can be found on the interface between the catalyst and graphite.
However some smaller diamond crystal grains can be found on the interface between the catalyst and graphite.
Online since: September 2006
Authors: Kenichi Wakisaka, Masashi Satoh, Yuki Itoh, Shinzo Yoshikado
The number of heating cycles at temperatures up to 1000°C was 17.
Mo-rich grains are formed on the thin-film before heating due to the extraction of Mo atoms from the thin-film and Mo sites in the thin-film are substituted by Pt atoms.
Mo-rich grains are formed on the thin-film before heating due to the extraction of Mo atoms from the thin-film and Mo sites in the thin-film are substituted by Pt atoms.
Online since: February 2015
Authors: Irina Kurzina, Francisco J. Cadete Santos Aires, Grigory V. Mamontov, Ivan S. Bondarchuk
Recently many efforts have been devoted to fabricate Pd–Ag nanostructures with well-defined morphology because the grain size and morphology have a great impact on the chemical and physical properties of metal nanomaterials [2].
Ceria has been claimed to be a strong promoter of structural and electronic properties of catalysts both in the automotive pollution control and for a number of industrial processes, such as purification and reforming of CH4, steam reforming of CO, CO2, methanol, and diethyl ether, as well as PROX reaction.
Ceria has been claimed to be a strong promoter of structural and electronic properties of catalysts both in the automotive pollution control and for a number of industrial processes, such as purification and reforming of CH4, steam reforming of CO, CO2, methanol, and diethyl ether, as well as PROX reaction.
Online since: February 2014
Authors: Fei Meng, Bao Yan Shan
Economic development level indicators which we choose are the local fiscal budget revenue, local fiscal budget expenditure, financial institutions at the end of the balance, the balance of urban and rural residents savings, at the end of the financial institutions the loan balance, total grain output, industrial enterprises above designated size output value, export volume, the number of ordinary high school full-time teachers, the net income of the farmers, 10 indicators in all.
Online since: December 2012
Authors: Xi Yuan Liu, Ji Zhou, Xin Yan Wang, Wen Peng Cai
Table 1 Soil parameters
Soil
Thickness
/m
γ
/kN /m3
C
/kPa
Φ
/°
Grain filling
3.2
18.3
23.4
6.8
Silty clay 1
1.8
18.7
15.2
5.3
Silty clay 2
4.6
19.3
13.5
10.8
Silt clay
6.3
17.1
11
3.3
Clay 1
3.4
17.8
13.5
3.5
Clay 2
2.6
18.3
19
5.7
Silty clay 3
2.9
20.4
21.8
16.3
Finite element model
Fundamental assumption of finite element model.
Table 2 Support characteristic contrast of the two schemes Scheme Capping beam section (b×h) Connecting beam section (b×h) Ring beam section (b×h) Support beam section (b×h) Interior support number Scheme 1 1.2m×0.8m 0.4m×0.6m 2.5m×0.8m 0.8m×0.8m 1 Scheme 2 1m×0.6m 0.5m×0.8m 1.8m×0.8m 0.8m×0.8m 2 Analysis of results Horizontal displacement change contrast of the supporting structure.
Table 2 Support characteristic contrast of the two schemes Scheme Capping beam section (b×h) Connecting beam section (b×h) Ring beam section (b×h) Support beam section (b×h) Interior support number Scheme 1 1.2m×0.8m 0.4m×0.6m 2.5m×0.8m 0.8m×0.8m 1 Scheme 2 1m×0.6m 0.5m×0.8m 1.8m×0.8m 0.8m×0.8m 2 Analysis of results Horizontal displacement change contrast of the supporting structure.