Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2006
Authors: Martijn Stroeven, Piet Stroeven, J. Hu
Stroeven
Faculty of Civil Engineering and Geosciences,
Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
P.Stroeven@citg.tudelft.nl; J.Hu@citg.tudelft.nl; M.Stroeven@citg.tudelft.nl
Keywords: computer simulation; concrete technology; diffusion capacity; gap grading
Abstract.
Moreover, production requires large amounts of fossil and electrical energy, and precious raw materials.
This is associated with the mechanical and durability properties of cementitious materials.
Stroeven: Discrete Numerical Model for the Structure Assessment of Composite Materials, Ph.D.
Metha: Chemical and physical effects of silica fume on mechanical behavior of concrete, ACI Materials Journal, Vol. 86 (1989), pp. 609-614
Moreover, production requires large amounts of fossil and electrical energy, and precious raw materials.
This is associated with the mechanical and durability properties of cementitious materials.
Stroeven: Discrete Numerical Model for the Structure Assessment of Composite Materials, Ph.D.
Metha: Chemical and physical effects of silica fume on mechanical behavior of concrete, ACI Materials Journal, Vol. 86 (1989), pp. 609-614
Online since: April 2004
Authors: Yutaka Watanabe, R. Fujisawa, H. Abe, Yuzo Daigo, M. Sakaihara
One of
the most difficult challenges to put the supercritical water to practical use would be mitigation of
environmentally assisted cracking of containment materials.
Dielectric constant represents a character of water as a solvent and is one of the key parameters, which determine solubility of an inorganic compound including metal oxides.
Material Tow kinds of austenitic stainless steels, 316 and 316L were used.
The degree of sensitization was evaluated by the electrochemical potentio-kinetic reactivation method and reactivation ratio of the material was 15.4%, which indicated that the material was well sensitized.
Cracking Experiments The slow strain rate test (SSRT) was adopted to evaluate SCC susceptibilities of the materials in sub-critical and supercritical water.
Dielectric constant represents a character of water as a solvent and is one of the key parameters, which determine solubility of an inorganic compound including metal oxides.
Material Tow kinds of austenitic stainless steels, 316 and 316L were used.
The degree of sensitization was evaluated by the electrochemical potentio-kinetic reactivation method and reactivation ratio of the material was 15.4%, which indicated that the material was well sensitized.
Cracking Experiments The slow strain rate test (SSRT) was adopted to evaluate SCC susceptibilities of the materials in sub-critical and supercritical water.
Online since: April 2009
Authors: Sébastien Chevalier
High temperature reactivity of materials under oxidizing atmospheres is based on the
formation of protective oxide scales.
Recently, oxygen diffusion coefficients were determined in ZrO2 grown on low tin Zy4 and on pure Zr at higher temperature (1373-1523 K) in order to evaluate what could happen in the materials in case of accidental scenario in Pressurized Water Reactor [46].
Carry: Key Engineer.
Larpin: Materials at High Temperatures Vol. 20 (2003) p.253. 45 Y.
Recently, oxygen diffusion coefficients were determined in ZrO2 grown on low tin Zy4 and on pure Zr at higher temperature (1373-1523 K) in order to evaluate what could happen in the materials in case of accidental scenario in Pressurized Water Reactor [46].
Carry: Key Engineer.
Larpin: Materials at High Temperatures Vol. 20 (2003) p.253. 45 Y.
Online since: September 2013
Authors: Xi Chang Wang, Xin Li
Core-Shell Structured Nanocomposites with Electromagnetic Properties
Xichang Wanga, Xin Lib*
Beijing Key Laboratory of Clothing Materials R&D and Assessment, School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
awxcwlcool@163.com, bclylx@bift.edu.cn
Keywords: PEDOT-PSS, core-shell structure, electromagnetic properties, nanocomposite
Abstract.
Introduction Nowadays multifunctional nanocomposites of conducting polymers have received great attention because of their unique properties and technological applications in electrical, optical, and magnetic materials and devices[1].
Among those multifunctional nanocomposites, electromagnetic functional conducting polymers are of special interesting due to their potential applications in electromagnetic interference (EMI) shielding, microwave-absorbing agents, batteries and biomedical materials and so on [2,3].
Synthesis process of the Co-Fe3O4/PEDOT-PSS nanocomposite Experimental section Materials. 3, 4-ethylenedioxythiophene (EDOT, ≥99.5%) was purchased from Suzhou Yacoo chemical reagent corporation.
Basically, according to Gangopadhyay and De [12], the conductivity of the materials depends on two aspects: macroscopic conductivity and microscopic conductivity.
Introduction Nowadays multifunctional nanocomposites of conducting polymers have received great attention because of their unique properties and technological applications in electrical, optical, and magnetic materials and devices[1].
Among those multifunctional nanocomposites, electromagnetic functional conducting polymers are of special interesting due to their potential applications in electromagnetic interference (EMI) shielding, microwave-absorbing agents, batteries and biomedical materials and so on [2,3].
Synthesis process of the Co-Fe3O4/PEDOT-PSS nanocomposite Experimental section Materials. 3, 4-ethylenedioxythiophene (EDOT, ≥99.5%) was purchased from Suzhou Yacoo chemical reagent corporation.
Basically, according to Gangopadhyay and De [12], the conductivity of the materials depends on two aspects: macroscopic conductivity and microscopic conductivity.
Online since: July 2007
Authors: Antonio Fiorentino, Claudio Giardini, Paolo Bortot, Elisabetta Ceretti
Fiorentino
1,c, Claudio Giardini2,d
1
Department of Mechanical Engineering, University of Brescia, Via Branze 38, 25123, Italy
2
Department of Design and Technologies, University of Bergamo, Via Marconi 5, Dalmine, 24044,
Italy
a
paolo.bortot@ing.unibs.it, belisabetta.ceretti@ing.unibs.it, cantonio.fiorentino@unibs.it,
d
claudio.giardini@unibg.it
Keywords: Sheet metal forming, Hydromechanical Deep Drawing, FE simulations, process
optimization and validation
Abstract.
In this way the production process can be shortened and attractive shapes and materials can be used.
Material properties were obtained from tensile tests (Fig 3) performed on a 100 kN Instron machine available in the testing material lab at University of Brescia.
Danckert: Development of Hydromechanical Deep Drawing Journal of Materials Processing Technology Vol. 83 (1998), p. 14
Lang: Analysis of the hydromechanical deep drawing of cylindrical cups Journal of Materials Processing Technology Vol. 103 (2000), p. 367
In this way the production process can be shortened and attractive shapes and materials can be used.
Material properties were obtained from tensile tests (Fig 3) performed on a 100 kN Instron machine available in the testing material lab at University of Brescia.
Danckert: Development of Hydromechanical Deep Drawing Journal of Materials Processing Technology Vol. 83 (1998), p. 14
Lang: Analysis of the hydromechanical deep drawing of cylindrical cups Journal of Materials Processing Technology Vol. 103 (2000), p. 367
Online since: July 2011
Authors: Yi Hua Sun, Chen Hui Li, Wei Hao Xiong, Cai Hua Huang
Influence of substrate temperature on the structural, electrical and optical properties of Al-doped ZnO films by RF magnetron sputtering
Yihua SUN1, a, Chenhui LI2, b, Weihao XIONG2 and Caihua Huang1
1College of Mechanical and Material Engineering, China Three Gorges University, Yichang 443002, China
2State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
asunyihua316181@163.com, bli_chenhui@sohu.com
Keywords: Al-doped ZnO; Magnetron sputtering; Deposition temperature; Transparent conducting oxide
Abstract.
Introduction Transparent conducting oxide (TCO) films are novel function materials which have been widely used in high-technology, military and civilian applications, such as transparent electrodes of solar cells, flat panel devices and the like, especially for indium tin oxides films (ITO) [1-3].
Recently many “non-In” materials such as Al-doped ZnO film (AZO film) have attracted much attention as an alternative material of ITO due to its cheap and abundant raw materials, non toxicity, and good stability in hydrogen plasma [2-4].
A sintered ceramic sputter target with a mixture of ZnO (99.99% purity) and Al2O3 (99.99% purity) was employed as source material.
Introduction Transparent conducting oxide (TCO) films are novel function materials which have been widely used in high-technology, military and civilian applications, such as transparent electrodes of solar cells, flat panel devices and the like, especially for indium tin oxides films (ITO) [1-3].
Recently many “non-In” materials such as Al-doped ZnO film (AZO film) have attracted much attention as an alternative material of ITO due to its cheap and abundant raw materials, non toxicity, and good stability in hydrogen plasma [2-4].
A sintered ceramic sputter target with a mixture of ZnO (99.99% purity) and Al2O3 (99.99% purity) was employed as source material.
Online since: July 2012
Authors: Hong Quan Deng, Qi Ying Jiang, Jian Rong Xu, Ya Min Hu
Synthesis, Structure and Thermal Analysis of Zn(II)-Bi(III) Hetrometallic Complex with ethylenediaminetetraacetate
DENG Hong-Quan1,a, JIANG Qi-Ying2,b*, XU Jian-Rong3,c, HU Ya-Min1,d
1Department of Chemistry, Southwest University of Science and Technology, China
2Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, China
3 School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
adenghongquan@swust.edu.cn, bjqy_163@163.com, cxujianrong@swust.edu.cn, dhuyamin@swust.edu.cn
Keywords: Heterometallic complex, Crystal structure, Zinc(II), Bismuth(III), Thermal analysis
Abstract.
Introduction Heterometallic complexes have been intensively investigated because of their fascinating structural diversities, special characteristics and potential applications in various fields, i.e., magnetic, luminescence, non-linear optical materials, near infrared chiroptical sensors, single-source precursor, molecular adsorption, manufacture of light conversion devices and catalysis [1-5].
TG coupled with FT-IR is a useful method for thermal analysis as it monitors continuously both the time dependent evolution of the gases and the weight of the non-volatile materials (residue).
Experimental Materials and methods NH4Bi(edta)H2O (edta=ethylenediaminetetraacetate) was obtained according to reference [7].
Acknowledgments We gratefully acknowledge that this work was supported by State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology (10zkfk18) and Southwest University of Science and Technology(12syjs-09).
Introduction Heterometallic complexes have been intensively investigated because of their fascinating structural diversities, special characteristics and potential applications in various fields, i.e., magnetic, luminescence, non-linear optical materials, near infrared chiroptical sensors, single-source precursor, molecular adsorption, manufacture of light conversion devices and catalysis [1-5].
TG coupled with FT-IR is a useful method for thermal analysis as it monitors continuously both the time dependent evolution of the gases and the weight of the non-volatile materials (residue).
Experimental Materials and methods NH4Bi(edta)H2O (edta=ethylenediaminetetraacetate) was obtained according to reference [7].
Acknowledgments We gratefully acknowledge that this work was supported by State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology (10zkfk18) and Southwest University of Science and Technology(12syjs-09).
Online since: September 2013
Authors: Xin Zhi, Zhan Cheng Guo
Study on the Preparing of Nano White Carbon Black by Silica Fume
Zhi Xin1,a* , Guo Zhancheng2,b
1 University of Science and Technology Beijing, Beijing, 100083, China.
2 State Key Laboratory of Advanced Metallurgy, Beijing, 100083, China.
Materials All chemical reagent used in the synthetic procedures of this work were purchased from the Beijing Chemicals Co.
The first work was to test the performance of micro silica powder in details, micro silica powder raw materials were taken from Inner Mongolia Erdos metallurgy group ferrosilicon plant.
The effect of micro components of raw materials on micro silica powder purity.
The Chinese Journal of Process Engineering. 12, 2, 212-217.(2012) [8] Li qi, Guan hao.
Materials All chemical reagent used in the synthetic procedures of this work were purchased from the Beijing Chemicals Co.
The first work was to test the performance of micro silica powder in details, micro silica powder raw materials were taken from Inner Mongolia Erdos metallurgy group ferrosilicon plant.
The effect of micro components of raw materials on micro silica powder purity.
The Chinese Journal of Process Engineering. 12, 2, 212-217.(2012) [8] Li qi, Guan hao.
Online since: April 2015
Authors: Quan Xie, Xi Cheng Xiong, Shuang Shuang Kang, Qian Chen, Jin Huang, Jin Min Zhang
Annealing Time Influence on Optical Characteristic of beta-FeSi2 Thin Film
Xicheng Xiong a, Shuangshuang Kang b , Qian Chen c , Jin Huang d ,
Quan Xie* e and Jinmin Zhangf
Institute of Advanced Optoelectronic Materials and Technology,
College of Big Data and Information Engineering, Guizhou University,
Guiyang City, Guizhou Province, 550025, China
agoodxinan@126.com, bkangya1989.home@163.com, cChenzhangqianer@163.com, dmp3huang@126.com, eqxie@gzu.edu.cn, fjmzhang@gzu.edu.cn
Keywords: Beta-FeSi2, Thin Film, Annealing Time, Influence, Optical Characteristic.
The beta-FeSi2 thin film has the excellent photoelectric characteristics, and it is an attractive novel photovoltaic semiconductor material.
Wang, Preparation of the Kondo insulators FeSi by magnetron sputtering, Materials Science Forum. 663-665(2011)1129-1132
Characterization and preparation of β-FeSi2/Si hetero structure, Journal of Functional Materials. 43(2012)1469-1471.
Makita, A thin-film solar cell of high-quality β–FeSi2/Si heterojunction prepared by sputtering, Solar Energy Materials & Solar Cells. 90(2006) 276-282.
The beta-FeSi2 thin film has the excellent photoelectric characteristics, and it is an attractive novel photovoltaic semiconductor material.
Wang, Preparation of the Kondo insulators FeSi by magnetron sputtering, Materials Science Forum. 663-665(2011)1129-1132
Characterization and preparation of β-FeSi2/Si hetero structure, Journal of Functional Materials. 43(2012)1469-1471.
Makita, A thin-film solar cell of high-quality β–FeSi2/Si heterojunction prepared by sputtering, Solar Energy Materials & Solar Cells. 90(2006) 276-282.
Online since: June 2006
Authors: X.B. Wang
Wang
Department of Mechanics and Engineering Science, Liaoning Technical University, Fuxin 123000,
China
wxbbb@263.net
Keywords: Size effect, Shear band, Fracture energy, Stress-strain curve, Strain gradient.
For quasi-brittle materials (rock, concrete, ice, cement, mortar, masonry and ceramic, etc), size effect can be observed in tests, such as uniaxial and multiaxial compressions, direct and indirect tensions, direct and simple shear, torsion, and threepoint bending.
Shear strain localization or shear band (SB) with a certain thickness can be observed in many tests for quasi-brittle materials.
After localization is initiated, the quasi-brittle material outside SB is still elastic and unloads elastically according to the elastic modulus E .
Pan: Key Engrg.
For quasi-brittle materials (rock, concrete, ice, cement, mortar, masonry and ceramic, etc), size effect can be observed in tests, such as uniaxial and multiaxial compressions, direct and indirect tensions, direct and simple shear, torsion, and threepoint bending.
Shear strain localization or shear band (SB) with a certain thickness can be observed in many tests for quasi-brittle materials.
After localization is initiated, the quasi-brittle material outside SB is still elastic and unloads elastically according to the elastic modulus E .
Pan: Key Engrg.