Search results

Metallographic structures: The metallographic structures are obtained using a computer-aided optical microscope (CAMO).
Sample A Sample B Sample C Sample D Fig. 4 - Porosity structures of different samples with magnification The metallographic structure is revealed by means of selective chemical attack by Nital.
From the structures obtained from the four alloys, it is noted that the structure of the sample (B) has a fineness of grain compared to other structures (A, C and D) which have similar grain sizes.
Sample A Sample B Sample C Sample D Fig. 5 - Structures of different samples with magnification The observed metallographic structure of the sample (B), whose W content is 10%, shows a uniform and uniform distribution of the tungsten W particles in the iron mass as well as in the Ni.
Materials Chemistry and Physics 204 (2018) 154 e162 [9] A.

Characterization the softening behavior of cold rolled AlMnFeSi-alloys during conditions of concurrent precipitation Ning Wang1,a, Yanjun Li2,b and Knut Marthinsen1,c 1Department of Materials Science and Engineering, NTNU, NO-7491, Trondheim, Norway 2SINTEF Materials and Chemistry, NO-7465, Trondheim, Norway aning.wang@material.ntnu.no, byanjun.li@sintef.no, cknut.marthinsen@material.ntnu.no Keywords: Aluminium, recovery, recrystallization, dispersoids, concurrent precipitation, Abstract.
It is demonstrated that variations in microchemistry may have dramatic effects on the softening kinetics and the final grain structures, where both pre-existing fine and dense dispersoids before back annealing as well as precipitation concurrent with recovery and recrystallization strongly retard kinetics and generally lead to a coarse grain structure, while conditions with no or limited concurrent precipitation soften much faster and generally result in an even, fine and equi-axed grain structure.
Also C2-2 gives an uneven and coarse grain structure (RD-ND: 119µm-36µm; Fig. 3c), while C2-1 although with slower kinetics gives a grain structure closer to C2-3 (RD-ND: 40µm-20µm; Fig. 3b).
This will limit nucleation through pinning of the sub-grain structure and slow down recrystallization kinetics (few and slowly growing grains) and thus explain the very slow kinetics and resulting coarse grain structure in this case.
Both C2-1 and C2-3 experience a considerably lower Zener drag (although comparable) and the kinetics and final grain structure are accordingly less affected.

Study on Structure and Properties of Ti/Pb-PANI-WC Inert Anodes Cao mei1, Guo Zhongcheng2, Xie Xianglan2, He Suqiong1 1 Faculty of Science, Kunming University of Science and Technology, Kunming, 650093, P.R.China 2 Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R.China a caomei003@126.com; b zhchguo@vip163.com Keywords: electrodeposition;composite coating;electrochemical property Abstract: Pb-PANI-WC inert anodes were prepared by direct current and pulse electrodeposition of PANI (conductive polyaniline) and WC particles with Pb2+ on the surface of titanium (Ti) substrate.
The structure and properties of composite coatings prepared by DC electrodeposition depend on a variety of interrelated process parameters, such as the concentration, size, distribution, and nature of the reinforced particles, hydrodynamics, current density, current modulation, etc [1,2].
The corrosion current density of the inert anode prepared by pulse electrodeposition is lower one half than that of DC electrodeposition, showing the inert anodes prepared by pulse electrodeposition has better corrosion resistance.Because pulse electrodeposition with higher instantaneous current density can increase cathode activation polarization and decrease cathode concentration polarization, causing that the grains sizes is decreased and the structure defects are reduced.[9~11].
The structure of Pb grains prepared by DC electrodeposition is that of octahedral, but the compactness of the deposit was not high, the grains sizes is larger and there exist some obvi- ous structural defects.
Journal of Electroanalytical Chemistry 1997,427 (1-2) :97-104

Molecular Dynamics Study of Water Structure Confined in Vibrative Silicon Plates Wang Zhu1,2,a, Bi Kedong1,2,b, and Chen Yunfei1,2,3,c 1School of Mechanical Engineering, Southeast University, Nanjing, Jiangsu, P.R.C 2Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, Jiangsu, P.
Researches [2-11] on ion distribution in EDL region and their effects on electro-osmotic flow have been carried out, but the effects of surface charges on the layering structure of water have not been systematically studied.
This may be due to the fact that the water layering structure results from steric effects, but not from electrostatic interactions [9].
As shown in Fig 2, when the surface isn’t charged (case 1), the hydration structure in the surface-normal direction has an oscillatory density profile [18].
Analytical Chemistry, (1996), p. 68(5): 888-893 [21] Yunfei Chen, Zhonghua Ni, Guiming Wang, et al.

It’s a basic requirement for green designer to reduce energy consumption in the structure and process of product making and use.
Printing machinery is more energy efficient by using advanced power drive and power consumption control technology Because of the application of automation technology in printing press design, the mechanical structure of the press has been greatly simplified, making the transmission efficiency of printing machinery greatly improved and hence the energy consumption reduced.
initiatives of some printing companies that implement green strategies: 1） Promote green printing philosophy in the printing customers and keep in mind that most buyers of print are young people who are concerned about the environment and the sustainable development, and this generation is the fastest growing group the print industry needs to appeal to, and in terms of the features of younger generation, try to form the atmosphere of taking the green line in all aspects of printing business management, production, procurement and sales; 2） Use Forest Stewardship Council approved papers and certification process; 3） Paper waste classifying and recycling; 4） Marked and tracked reduction of paper waste and other waste; 5） Use of wind energy credit for electricity; 6） Use with zero VOC content of sheet-fed offset printing inks; 7） Use alcohol-free fountain solution; 8） Use of low VOC content of wash-up solutions; 9） Reduce energy use (use all fluorescent lighting, etc.); 10） Use chemistry-free
CTP printing process also brings a stable halftone dot size, and because these plates are chemistry-free, the printing stability is further enhanced, which brings improved register accuracy.

The function of a small quantity of sulfuric acid in the electrolyte chiefly composed of organic acid is that adjusting competition equilibrium between oxide film developing and chemistry dissolving [8].
Transverse section structure of the oxide film and the combination status between the film and the substrate are observed with metallographic microscope.
The specimen is cut down in place and manufactured metallographic specimen, the transverse section structure of which is observed with metallographic microscope.
Feng: Physical Chemistry [M].

So the hemisphere and rectangular solid materials selected for the model are both single crystal silicon which lattice structure is diamond type.
According to the literature, as to single crystal silicon material with diamond cubic lattice structure, the Stillinger-Weber (S-W)4 and Tersoff potential function5 can describe the interaction between Si atoms and Si atoms.
Modeling solid-state chemistry: Interatomic potentials for multicomponent systems.
Tang, Editor, Theory and Practice of Molecular Simulation, Chemistry Industry Press, Beijing (2007)

In this work, a novel material of removing deeply fluorine with modified zeolite have been prepared first, based on properties of coordination chemistry and mechanism of ligand exchange, Using the zeolite for carrier to Fe3﹢from solution of FeCl3 ,which the fixed central ion of coordination complex was formed .
Then the zeolite achieved modified and it can formed unsaturated complex structure to load central ion.
It can also be considered that the hole structure and adsorption surface are not affected by modifying.
Email:liujian@chd.edu.cn References [1] Apambire W.B., Boyle O.R., Michel F.A., Geo-chemistry, genesis, and health implications of fluoriferous groundwaters in the upper regions of ghana, Environmetal Geoiogy, 1997,33(1):13 [2]E.J.

Study on the Control of Gelatinous Membrane in the Process of Vinegar Trickling Fermentation Hongmei Lu*1,a, Liping Zhang2,b, Baifa Zhang3,c, Xiaolin Jiang4,d, Laixin Dai5,e 1,2,3,4,5School of Chemistry and Chemical Engineering, Guizhou University， Guiyang, Guizhou, CHINA 1,2,3,4,5Guizhou Province Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guiyang, Guizhou, CHINA aemail: 844864400@qq.com. bemail: lping87@163.com. cemail: wafaer1985@163.com.
Such ribbon cellulose further grows interlacedly as a visible reticular structure, forming a regular structure.
[9] Wu Yi-ming: Chemistry of Plant Fiber.

Removal of Cr (VI) From Aqueous Solution Using Camellia Oleifera Abel Shells Yudong Lu1, a, Wenlu Wu1, b, Shan Lin2, c, Ruiyun You2, d and Zonghua Wu2, e 1College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, China 2College of Material Science and Engineering, Fujian Normal University, Fuzhou 350007, China aluyudong97@163.com, b99105587@qq.com, cfzyt.linshan@163.com, dyouruiyun@tom.com, ewuzonhua@163.com Keywords: Camellia oleifera abel shells, Cr(VI), Absorption, Adsorption isotherms.
The rapid Cr(VI) uptake stage was likely to be large surface of camellia oleifera abel shell due to its highly porous and mesh structure and the abundant availability of active sites on the surface.
This attributed to the sufficient energy provided by promoted temperature for Cr(VI) ions to reach and adsorb onto camellia oleifera abel shell interior structure.
Das, P.Rath, et al., Removal of Cr(VI) from aqueous solution using waste weed, Salvinia cucullata, Chemistry and Ecology. 23 (2007) 105-117