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Online since: October 2006
Authors: Masafumi Chiba, Hideki Hotta, Atsushi Sotoma, Toshiro Kuji
The crystal structure of iron and cobalt is different, i.e., iron: bcc and cobalt: hcp.
It was thought that the ions of Mg alloyed with the bcc Fe structure, and the grain structure became non-uniform.
We thus clarified that the composition ratio of added Mg influenced the crystal structure and the grain size with the system for the combination to make the hcp structure react with the bcc structure.
The influence was less for the Co-Mg system with the same hcp structure than for bcc:Fe-hcp:Mg.
We clarified that the composition ratio in the Fe-Mg system of added Mg influenced the crystal structure and the grain size for the combination to make the hcp structure react with the bcc structure.
Online since: February 2014
Authors: Yu Bie, Wen Yuan Mao, Yun Zhang, Ming Fu Hu, Jing Hua Chang
Numerical Simulation of the Optimum Geometry Parameters of a New Type Jet Pump Wenyuan Mao 1,a, Yun Zhang2,b, Mingfu Hu 1,c, Yu Bie 1,d, Jinghua Chang 1,e 1 The Solar Energy Institute, Kunming University of Science and Technology, Kunming Yunnan 650550, China 2 An yang Institute of Technology, The School of Chemistry & Environmental Engineering.
Some researchers has investigated the Optimization of its structure and size.
Its nozzle is a cross section tapering cone pipe, forming a flare structure.
So the structure of the nozzle will greatly affect the performance of the jet pump.
There are mainly two factors in the nozzle structure.
Online since: April 2010
Authors: Erik Janzén, Nguyen Tien Son, Norio Morishita, Takeshi Ohshima, Junichi Isoya, Patrick Carlsson, Björn Magnusson
Additional large-splitting 29Si hyperfine (hf) lines and also other 13C and 29Si hf structures were observed.
This hf structure is therefore assigned to the hf interaction with one 13C nucleus.
The Si hf structure of + CV is also indicated.
The observation of different Si hf structures also indicates that the centre may consist of more than one carbon vacancy and possibly also a C antisite.
Summary In summary, we have observed additional 29Si and 13C hf structures of the EI4 EPR defect in HPSI 4H SiC irradiated with 2MeV electrons and annealed.
Online since: June 2021
Authors: Mei Tian, Hong Yu Liu, Xiao Yan Wang, Xiang Yu Zang
Optical Properties of Cholesteric Liquid Crystal Elastomer Film Hongyu Liu1,a, Xiaoyan Wang1,b, Xiangyu Zang2,c and Mei Tian3,d* Department of Chemistry, College of Science, Northeastern University, Shenyang, China 1These authors contributed equally to this work.
The chemical structures and LC properties of the monomers and polymers were characterised by Fourier Transform Infrared Spectrometer (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TG), polarized optical micrograph (POM) and X-ray diffractometer (XRD).
The selective reflection of cholesteric phase LC is determined by it’s pitch, which could be influenced by external factors like temperature, while the cross-linked structure of cholesteric LC elasomers will influence the change of pitch when temperature changes [10].
The maximum absorption wavelength range of the ABC films did not change with the change of temperature, indicating that the cross-linked structure has stabilized the pitch.
Online since: July 2011
Authors: R. Allouche, R. Renane, Olivier Serro-Guillaume, A. Nour
Abstract: The aim of our work is to contribute to the analysis of the structure of laminar premixed Methane-Air flames using two methods.
Only detailed studies of flame structure permit to achieve these objectives.
Chemical kinetics is now a vast field of chemistry constantly growing.
In the input file a mesh structure is fixed after a sensitivity analysis (see fig.2).
Conclusion This work is a contribution in the numerical simulation and analysis of laminar premixed flame structure of methane-air mixtures.
Online since: February 2011
Authors: Hong Juan Wang, Feng Qiang Sun, Ming Zhong Ren, Qing Wei Guo
Facile Preparation of Nanoporous SnO2 for application in photodegradation of Methylene Blue Hongjuan Wang1.2, Fengqiang Sun1,a, Mingzhong Ren3, Qingwei Guo3 1School of Chemistry and Environment, South China Normal University, Guangzhou 510006, (P. 
Diffraction peaks, corresponding to tetragonal cassiterite structure of SnO2 (JCPDS: 21-1250) are clearly observed.
The N2 adsortion-desorption isotherm (Fig.3) for SnO2 with a hysteresis loop indicates the sample has porous structure.
The porous structure maybe originates from the drying and photochemical reaction process.
The evaporation of H2O also led to form porous SnO2 structure.
Online since: March 2010
Authors: Chang An Wang, Yong Huang, Li Zhong Zhou
Various ceramic processing techniques have been utilized to fabricate porous ceramics with different composition and structure [4,5].
Porous ceramics produced by this method have uniform pore structure, high porosity and excellent mechanical strength.
The structure and properties of porous silica ceramics are influenced by the above factors.
The structure and properties of porous silica ceramics were investigated, and the fracture morphology were also observed.
Ohji: Materials Chemistry and Physics Vol. 80(2003), p. 610 [4] A.
Online since: May 2010
Authors: Raouf O. Loutfy, James Withers, John Laughlin, Yasser Elkadi, Jay DeSilva
Fig. 1: Illustration of Kroll Chemistry to Produce Titanium purify, transport, store TiO2/TiO2 Ore + 2C + 2Cl2 TiCl4 + 2CO 2MgCl2 + 4e- 2Mg + 2Cl2 2Mg + TiCl4 Ti + 2MgCl2 Fig. 1: Illustration of Kroll Chemistry to Produce Titanium purify, transport, store TiO2/TiO2 Ore + 2C + 2Cl2 TiCl4 + 2CO 2MgCl2 + 4e- 2Mg + 2Cl2 2Mg + TiCl4 Ti + 2MgCl2 Fig. 1: Illustration of Kroll Chemistry to Produce Titanium purify, transport, store TiO2/TiO2 Ore + 2C + 2Cl2 TiCl4 + 2CO 2MgCl2 + 4e- 2Mg + 2Cl2 2Mg + TiCl4 Ti + 2MgCl2 The Electrolytic Production of Ti from a TiO2 Feed (The DARPA Sponsored Program) James Withers1, a , John Laughlin1 , Yasser Elkadi1 , Jay DeSilva1 , and Raouf Loutfy1 1 Materials and Electrochemical Research (MER) Corporation 7960 S.
V22 -Clip‖ 901-033-113-443 Ti 6Al-4V F15 -Clip‖ 68A33300-2195 Ti 6Al-4V One step Vacuum Distill & Hot Press One step Vacuum Distill & Hot Press One step Vacuum Distill & Hot Press One step Vacuum Distill & Hot Press PAM Button Melt Alloying & PAM Button Melt Alloying & PAM Button Melt Direct Roll To Sheet & Anneal Direct Roll To Sheet & Anneal Direct Roll To Sheet & Anneal Direct Roll To Sheet & Anneal Hot Press & Finish Hot Press & Finish Hot Press & Finish Hot Press & Finish Product Sample Cap Reduction & Fused Salt Electrolysis Cap Reduction & Fused Salt Electrolysis Cap Reduction & Fused Salt Electrolysis ASTM Grade 1 Direct Rolled Electrolytic Compact Direct Rolled Electrolytic Compact CP Ti CP Ti CP Ti 2A 2B Carbon 0.08 max 0.011 0.011 Oxygen 0.07 typ 0.022 0.031 Nitrogen 0.03 max 0.002 0.006 Hydrogen 0.015 max 0.015 0.016 Iron 0.20 max 0.001 0.004 Chlorine 0.10 max 0.03 0.01 Chemistry
Concurrent with setting-up the cold wall cell, the 500 lbs/day (227 kg/day) cell is being designed, and construction of the basic structure was initiated in late 2009.
Suzuki, Calciothermic Reduction of TiO2 and In-Situ Electrolysis of CaO in the Molten CaCl2, Journal of Physics and Chemistry of Solids, 66, (2005), 461-465
[61] Shuqiang Jiao, Xiaotong Hu, Hongmin Zhu, Titanium Electrolysis using TiCxOy Anode prepared through Carbothermic Reduction of Titanium Dioxide, 7th International Symposium on Molten Salts Chemistry and Technology, 29 August - 2 September, 2005, Toulouse, France
Online since: October 2008
Authors: Vilas Ganpat Pol, Swati Vilas Pol, Aharon Gedanken
Introduction Tungsten diselenide (WSe2) has a hexagonal structure consisting of sandwiched Se and W layers with a thickness of about 3.3 Å.
Similar to WSe2, they have an interesting sandwich structure: layers of Se-Mo-Se interact with each other by Van der Waals forces and can act as intercalation hosts.
Tenne et al. has already demonstrated that, as expected, the layered structures, when subjected to high temperatures, may convert not only to inorganic fullerenes but also to nanotubes [22,23].
The as-prepared particle morphology and structure are studied by transmission electron microscopy with a JEOL-2010 HRTEM instrument, using an accelerating voltage of 200 kV.
Bailar, Comprehensive Inorganic Chemistry, Pergamon Press, New York, 1973.
Online since: July 2022
Authors: Olena Tarakhno, Olga Skorodumova, Olena Chebotaryova
Previous studies have shown that the combined use of silicate coatings and flame retardants of simple structure prevents the ignition of impregnated samples of cotton-containing fabric and the proposed chemistry of this process.
However, the publications in the technical literature considered the technological aspects of liquid glass processing and the stages of aging of the obtained gels in terms of obtaining gel powders of the desired structure, porosity or pore morphology, but not stable sol [13, 14]. 2 Unresolved Issues Protective coatings based on sodium silicate or liquid glass have long been used in various fields for various purposes: for fire protection of wooden structures [14, 15], for creating foaming or gel-forming compositions for extinguishing flammable liquids [15], etc.
The beginning of the formation of spatial structures in the ash (large associates) with increasing concentration of the sol is observed the earlier the higher the concentration of the sol (Fig. 1).