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Online since: April 2012
Authors: Eeu Tien Yew, Wan Ming Hua, Poh Sum Wong, Rosli Hussin, Nur Amanina Mat Jan, Zuhairi Ibrahim
The result of IR and Raman Spectroscopy revealed that the network structure of the studied glasses is mainly based on BO3 and BO4 units placed in different structural groups, the BO3 units being dominant.
The structure of glass was characterized by FT-IR and Raman spectroscopy.
It shows that the vibrational spectroscopy (Raman and Infrared) provide a functional and intercomplimentary information about the network structures of borate glasses.
IR spectra result showed the vibrational structure of the Sb2O3:B2O3 glass series.
N., Materials Chemistry and Physics 120, Elsevier (2010) p. 89-97 [5] Konijnendijk.
Online since: June 2019
Authors: Vladimir S. Rudnev, I.V. Lukiyanchuk, N.E. Zabudskaya, I.V. Chasovnikov, Marina S. Vasilyeva
., Vladivostok 690091, Russia 2Institute of Chemistry, FEB RAS, 159, pr. 100-letya Vladivostoka, Vladivostok 690022, Russia avasileva.ms@dvfu.ru, brudnevvs@ich.dvo.ru, clukiyanchuk@ich.dvo.ru, dnatka1995@mail.ru, echasovnikov.iv@students.dvfu.ru Keywords: Metal Oxide Electrode, Tin, Tin Oxide, Plasma Electrolytic Oxidation, Potentiometry, Catalytic CO Oxidation Abstract.
SnO2-containing structures formed in the electrolytes with [Sn-EDTA]2- anions are shown to be active in catalytic oxidation of CO into CO2 at temperatures above 350 °C.
Anodic plasma electrolytic oxidation is one of the attractive methods for the synthesis on the metal surfaces of various oxide structures [9].
A feature of the method is the thermolytic transformations of the solution components at the anode with the formation on the surface of the corresponding oxide structures.
Coatings formed in electrolyte II in the anodic mode have a developed coral-like structure (Fig. 3b).
Online since: August 2013
Authors: Umer Mushtaq, Souad. A.M. Al-Bat’h, Raihan Othman
XRD analysis confirms a hexagonal wurtzite structure having grain size 57.2 nm.
The deposition parameters such as temperature, time and composition control the structure of the film [24].
Structural Characterization The crystal structure of ZnxCd1-x (O) thin film Nanorods was investigated through X-ray diffraction (XRD).
This suggests that all the prepared ZnO thin films have a hexagonal wurtzite structure and are preferentially oriented along the c-axis perpendicular to the substrate surface.
Material Chemistry and Physics., 68, (2001), pp.22-30.
Online since: July 2015
Authors: Yuan Hao, Chao Peng Huang, Wen Ming Song, Ying Ma, Gui Rong Yang
The net texture-like structure was formed among the composite coating, which could be the main support for load during wear process.
In this paper, the Ni-based composite coating Ni/WC/G with a net texture-like structure was fabricated through vacuum cladding technology on the surface of Q235 steel by choosing suitable powder and processing parameters.
There was net texture–like structure that composed of hard ceramic particles (WC) shown from fig.4 (e),(f),(g) and (h) marked with red ellipse, which could be the main support for load during wear.
The net texture-like structure was formed among the composite coating, which could be the main support for load during wear process.
Influence of alloy chemistry on microstructure and properties in NiCrBSi overlay coatings deposited by plasma transferred arc welding (PTAW)[J].
Online since: December 2014
Authors: Chang Jing Fu, Shuang Li, Qian Wang
X-ray photoelectron spectroscopy (XPS) data were taken on an AXIS Ultra instrument from Kratos Analytical in the range of 1-1300 eV to investigate the surface chemistries of the obtained materials.
Results and Discussion Morphology and Structure of N-rGO.
The morphology and structure of N-rGO were analyzed by SEM and TEM observation.
An increased magnification in fig. 1a through TEM observation shows that the fluffy agglomerate consists of many ultrathin nanosheets with wary structures.
Corrugation and scrolling suggested the intrinsic nature of graphene, because the 2D membrane structure would be thermodynamically stable via blending [14].
Online since: July 2015
Authors: Hendrik O. Lintang, Salasiah Endud, Leny Yuliati, Nur Umisyuhada Mohd Nor
Lintang2, Salasiah Endud1 and Leny Yuliati2,a 1Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia 2Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia aleny@ibnusina.utm.my Keywords: Bulk TiO2, Dispersed TiO2, MCM-41, Photocatalyst, Hexanol.
The X-ray diffraction (XRD) patterns showed that the intensities of diffraction peaks for MCM-41 decreased with the increase of the TiO2 loading, suggesting that the higher loading amount of TiO2 might lead to less ordered structure of MCM-41.
The structure and crystallinity of the prepared samples were investigated by using XRD.
The increase in the amount of TiO2 loading resulted in the decrease in the peak intensity of the MCM-41, suggesting that the addition of TiO2 might reduce the ordered structure of the MCM-41.
Since the diffraction peaks of MCM-41 were observed, it was clear that the structure of MCM-41 was still maintained even though with some less ordered structure.
Online since: August 2011
Authors: Hai Hui Chen
Stainless steel lining high pressure reactors were tested and manufactured by hydraulic pressure expanding method Hai Hui CHEN ( College of Chemistry & Chemical Engineering, JingGangShan University, Ji’An, P.R.C.343009.
The new technology and new structure were applied to four 3m3 reactors in 1989.
Its structure parameters: the major diameter of container body of high pressure reactors cylinder is 1386mm, inner diameter 1326mm, wall thickness 30mm.
Online since: October 2013
Authors: Xiao Yu Wang
Nonlinear finite element analysis of the piston rod under the impact load Xiaoyu wang School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, China Email:wangxiaoyurainy@163.com Keywords: Nonlinear finite element, Impact load, Dynamic analysis Abstract.
In three-dimensional modeling process, suppose that the forces acting upon the piston rod were uniform, according to the structure of the piston rod and bearing conditions, to simplify the piston rod into the axisymmetric structure, so the model when selecting a quarter model was analyzed, it can greatly reduce unit number and the degrees of freedom, save the solving time[3].In addition, the fillet of the piston rod was one of the important factors leading to fatigue fracture, so the fillet can't be negligible when modeling.
Online since: March 2014
Authors: Feng Rui Zhai, Zhong Zhou Yi, Hong Yan Sun, Bo Wang, Zhi Peng Xie
Zirconia based function and structural materials are one of the most important in organic materials,and have been widely used in the fields of special ceramics,catalysts,oxygen monitor,fuel cell,chemistry industry and environmental protection.In the real applications,all of the ZrO2 concerned materials must undergoes the preparation of suitable raw powders.While,due to the huge surface energy of ZrO2,powders synthesized from the calcination processes possesses the agglomerated as well as the un-uniform products[7-9].The oxygen vacancy is one of the important structural units which provide the stability of the products,but this is not their only mechanism.Investigation methods on the oxygen vacancy and the effect of the vacancy on the structure,chemical and optical properties are the weak points and still keeping in vogue in the study of ZrO2[10-12].
Weng, Spin-coating derived LSM-SDC films with uniform pore structure, Thin Solid Films, 516(2008)5206-5209
Online since: January 2013
Authors: Tie Hu Li, Ting Kai Zhao, Xing Zhao, Jin Yan, Li Du
Introduction Since the discovery by Iijima [1] and Bethune [2] in 1993, single-walled carbon nanotube (SWCNT) has been one of the most actively hot researches due to their unique physical, mechanical and electronic properties [3], SWCNTs are generally considered as having great potential for a broad spectrum of sciences from engineering, materials, chemistry, biology and medicine[4].
Compared to typical copper interconnects, SWNTs can carry up to two orders of magnitude higher current densities (~109 A/cm2) and are insensitive to electromigration. [7] It is well known that the electronic structures of SWCNTs depend strongly on the diameter and chirality [8,9].
Therefore, how to grow SWCNTs with well-controlled structures is highly desirable for both fundamental research and practical applications.