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Online since: March 2008
Authors: Jean Michel Sprauel
Moreover, the joint is two phase and coarse grain.
In fact, a diffraction peak results from the simultaneous contribution of a great number of coherently diffracting domains and its shape depends on three kinds of factors: - Instrumental factors like the size of the primary and secondary slits and the distribution of wave length of the incident beam, - 2nd kind effects: composition and elastic strain heterogeneity's of the diffracting crystallites.
Online since: February 2007
Authors: János Dobránszky, György Ring, Eszter Bognár
The peeled off coating, effected by the expansion, N=100× Microanalysis were executed on the surface of the stent as well that shows the precise content of the coating and the materials for elements, which have Z>8 atomic number.
After expansion the coating was examined mostly on the critical curves, slip lines occurred, grain boundaries were outlined, so the roughness was grown locally, but the coating did not change significantly.
Online since: November 2012
Authors: Chun Xia Wang, Quan Jiu Wang, Zhuang Liang
Treatments of the experiment Amelioration acid kinds Treatment number Using quantity /(Kg•ha-1) Irrigation quantity / (m3•ha-1) Irrigation periods /(d) PAM 1 7.5 4425 7 2 15 4425 7 3 45 4425 7 Handilong 4 750 4425 7 5 1500 4425 7 6 3750 4425 7 Gypsum 7 1995 4425 7 8 4005 4425 7 9 5340 4425 7 Comparison treatment 10 0 4425 7 Measurement guide line.
Results and Discussion Variety character of topsoil bulk density The soil bulk density is one important guide line on soil physical character, when the soil bulk density is big, small in the soil holes degrees, the soil glutinous grain contents are relatively manifold, then the soil penetrability will reduce, and accumulate soil salt.
Online since: June 2013
Authors: Ton van den Boogaard, M.S. Niazi, H.H. Wisselink, V. Timo Meinders, Gerrit Klaseboer, C.H.L.J. ten Horn
The microstructure of DP steels has martensitic phase islands (grains) embedded in a soft ferritic matrix.
This research was carried out under the project number M61.1.08308 in the framework of the Program of the Materials innovation institute M2i (www.M2i.nl).
Online since: January 2012
Authors: I.Z. Rahman, M.A. Rahman, M.A. Raza
The structure of the anode after sintering must have sufficient porosity and high three phase grain boundary length, which can be increased by producing the nanostructured anode materials.
The perovskite structure is known to be very flexible and the A and B ions can be varied leading to the large number of compounds with perovskite related structures [3].
Online since: March 2008
Authors: Masanori Kikuchi, Ze Jian Xu, Yu Long Li
Many experimental efforts have been reported on the determination of DFT and dynamic fracture properties of a variety of materials [6-12], and a number of theoretical models and criteria for dynamic fracture and shear localization have been suggested [13-16] up to now.
The specimens that failed by tensile cracks have dark and coarse fracture surfaces without metallic lusters, on which bright metal grains can be seen under microscope, as shown in figure 9.
Online since: October 2011
Authors: A. Triwiyanto, Patthi Hussain, M. Che Ismail
Sensitization is a common problem in austenitic steel where precipitation of chromium carbides (Cr23C6) occurs at the grain boundaries at elevated temperatures, typically between 450 to 850oC; diffusional reaction in forming chromium nitride/carbide leads to the depletion of Cr in the austenitic solid solution and consequently unable to produce Cr2O3 passive layer to make stainless feature.
Triwiyanto., et.al, Structural and properties development of expanded austenite on AISI 316L after low temperature thermochemical treatments, Journal of Applied Sciences, Vol. 11, Number 9, pp.1536 -1543, 2011
Online since: May 2012
Authors: Xian Min Li, Xiao Ni Zhang, Chang Ming Li
Phosphate deposits have been found on the blade in a large number of once-through boilers operating on AVT(R) which are different form phosphate treatment in drum boiler.
The corrosion of alloy in low temperature water is characterized in the initial phase (without protective layer) by the topotactic (inner layer) transformation of individual ferrite grains to magnetite.
Online since: November 2011
Authors: Wei Dong Zhu, Fu Min Zhang, Fei Chen, Qiang Xiao, Yi Jun Zhong
About 0.5 g of the catalyst diluted with an equal amount of quartz grains was charged into the reactor.
Narayana et al. [8,9] analyzed the contents of the V3+, V4+, and V5+ ions in fresh and used V2O5/TiO2 catalysts during ammoxidation reactions and found the average oxidation number of vanadium just slightly lower than 5.
Online since: January 2013
Authors: Wei Jun Hui, Qi Long Yong, Fang Zhong Hu
Although the compositions of the studied steels are different, the three bainite type non-quenched and tempered steels (5-1, 6-1 and 8-1) exhibited almost the same grain size of the prior austenite, being on the order of 16 μm, 20 μm and 18 μm, respectively.
First of all, there are mainly two kinds of dislocations in bainitic microstructure: one is a large number of deformation dislocation formed in the process of forged deformation in the austenitic region.
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