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Online since: April 2015
Authors: Xian Ping Zhang, Hong Song Zhang, Xiao Ge Chen, Yuan Wei
Thermophysical Properties of (Sm1-xNdx)2Ce2O7 Ceramic Oxides
Xiaoge Chen1, a, Yuan Wei2, b, Xianping Zhang1, c and Hongsong Zhang3, d
1Department of Construction Engineering, Henan Institute of Engineering,
Zhengzhou 451191, China
2Department of Materials and Chemistry, Henan Institute of Engineering, Zhengzhou 451191, China
3Department of Mechanical Engineering, Henan Institute of Engineering, Zhengzhou 451191, China
aChenxg831025@163.com, bbirsrliao@126.com, cxianping@126.com, dzhsandchen@126.com
Keywords: Ceramics, Phase structure, Thermal conductivity, Thermal expansion coefficient
Abstract.
The (Sm1-xNdx)2Ce2O7 ceramics have pure fluorite-structure.
It can be seen that (Sm1-xNdx)2Ce2O7 ceramics has single phase structure.
The absence of diffraction peaks around 36.9° and 44.5° in their XRD patterns are always considered as the characteristic of the fluorite structure distinguished from the pyrochlore structure according to standard PDF cards[13].
Zhao,Phase structure and thermophyscial properties of co-doped La2Zr2O7 ceramics for thermal barrier coatings, Ceram.
The (Sm1-xNdx)2Ce2O7 ceramics have pure fluorite-structure.
It can be seen that (Sm1-xNdx)2Ce2O7 ceramics has single phase structure.
The absence of diffraction peaks around 36.9° and 44.5° in their XRD patterns are always considered as the characteristic of the fluorite structure distinguished from the pyrochlore structure according to standard PDF cards[13].
Zhao,Phase structure and thermophyscial properties of co-doped La2Zr2O7 ceramics for thermal barrier coatings, Ceram.
Online since: April 2014
Authors: Md Eaqub Ali, Rasel Das, Sharifah Bee Abd Hamid
The competitive performances of CNTs in solar cells would build multibillion dollar energy market using green chemistry principles, reducing green house emission and ensuring enough energy for the future generations.
Therefore, CNTs have been considered as alternative materials for various solar cell structures which have efficiency to convert light photon to electrons in photo-voltic device.
Therefore, it is clear that, the CNTs could contribute the structure of silicon solar cell and have capability to bring promising architecture with low manufacturing cost and high performance [16].
Therefore, CNTs have been considered as alternative materials for various solar cell structures which have efficiency to convert light photon to electrons in photo-voltic device.
Therefore, it is clear that, the CNTs could contribute the structure of silicon solar cell and have capability to bring promising architecture with low manufacturing cost and high performance [16].
Online since: September 2022
Authors: Noshin Mir, Ahmad Gholamalizadeh Ahangar, Mir Hassan
The Journal of Physical Chemistry B. 106 (2002) 9597-9603
Food Chemistry. 100 (2007) 1126-1131
Industrial and Engineering Chemistry.
Journal of Physics and Chemistry of Solids. 74 (2013) 1426-1432
[40] Clément, L., Hurel, C., Marmier, N, Toxicity of TiO2 nanoparticles to cladocerans, algae, rotifers and plants – Effects of size and crystalline structure.
Food Chemistry. 100 (2007) 1126-1131
Industrial and Engineering Chemistry.
Journal of Physics and Chemistry of Solids. 74 (2013) 1426-1432
[40] Clément, L., Hurel, C., Marmier, N, Toxicity of TiO2 nanoparticles to cladocerans, algae, rotifers and plants – Effects of size and crystalline structure.
Online since: July 2023
Authors: R. Ranjana, R. Anjana, N.P. Ansab
The basic structure consists of Si-O, C=C, C-C and O-H linkages.
The optimized structure of BC-01 is shown in Figure 9b.
Avogadro software (a) Basic structure of BC-01; (b) Optimized structure of BC-01 Fig. 10.
Developed structure of (a) BC-01; (b) FeBC-01 The structural properties of the molecular structure of BC-01 and FeBC-01 were calculated using ChemCraft.
Avogadro Program for Chemistry Education: To What Extent can Molecular Visualization and Three-dimensional Simulations Enhance Meaningful Chemistry Learning?.
The optimized structure of BC-01 is shown in Figure 9b.
Avogadro software (a) Basic structure of BC-01; (b) Optimized structure of BC-01 Fig. 10.
Developed structure of (a) BC-01; (b) FeBC-01 The structural properties of the molecular structure of BC-01 and FeBC-01 were calculated using ChemCraft.
Avogadro Program for Chemistry Education: To What Extent can Molecular Visualization and Three-dimensional Simulations Enhance Meaningful Chemistry Learning?.
Online since: February 2012
Authors: Yue Zhong Lin
Structure of use time limit or life span is after structure construct completion, at schedule to of usage with maintain under the condition, structure all function(like safety, applicability) all ability satisfy original request of actual time limit.
Fick two proliferation laws is foundation of model[6~8].Our country many the durable problem and structure safety of concrete mutually contact, is a structure safety evaluation of importance index sign.
Theories and application of the engineering structure credibility [M].
Reliability calibration of concrete structures after strengthening [J].
State of the art of reliability analysis of deteriorating reinforced concrete structures [J].
Fick two proliferation laws is foundation of model[6~8].Our country many the durable problem and structure safety of concrete mutually contact, is a structure safety evaluation of importance index sign.
Theories and application of the engineering structure credibility [M].
Reliability calibration of concrete structures after strengthening [J].
State of the art of reliability analysis of deteriorating reinforced concrete structures [J].
Online since: April 2007
Authors: Qiu Sun, Xian Qun Chen, Hong Cheng Liu
China
2
Department of Applied Chemistry, Harbin Institute of Technology, Harbin, P.R.
This structure is composed of alternating stacked layers of bismuth oxide and bismuth titanate [8].
Well-crystallized BYT powders with bismuth layered perovskite structure were achieved by annealing above 650°C for 2h.
The coincidence of diffraction peaks of BYT with those of Bi4Ti3O12 implies that the Yb doping does not affect the layered perovskite structure.
It is also known that, generally, the fluorite structure shows the Bi-deficient properties compared with the perovskite structure [11].
This structure is composed of alternating stacked layers of bismuth oxide and bismuth titanate [8].
Well-crystallized BYT powders with bismuth layered perovskite structure were achieved by annealing above 650°C for 2h.
The coincidence of diffraction peaks of BYT with those of Bi4Ti3O12 implies that the Yb doping does not affect the layered perovskite structure.
It is also known that, generally, the fluorite structure shows the Bi-deficient properties compared with the perovskite structure [11].
Online since: September 2013
Authors: Jan Tomaštík, Vaclav Ranc, Radim Čtvrtlík
Experimental and theoretical studies have shown that silicon undergoes transformation from ambient-pressure diamond cubic structure (Si-I) to more dense β-Sn (Si-II) structure at hydrostatic pressures of 10-13 GPa [1].
This complex nature is probably a result of local structure peculiarities.
A strong correlation between the shape of indentation curves and changes of structure of Si films were observed.
Trefilov, Phase transition in diamond-structure crystals during hardness measurement, Phys.
Crain, Structure and properties of silicon XII: A complex tetrahedrally bonded phase, Phys.
This complex nature is probably a result of local structure peculiarities.
A strong correlation between the shape of indentation curves and changes of structure of Si films were observed.
Trefilov, Phase transition in diamond-structure crystals during hardness measurement, Phys.
Crain, Structure and properties of silicon XII: A complex tetrahedrally bonded phase, Phys.
Online since: October 2014
Authors: Zheng Jin, Hai Qing Ma, Di Wu, Wen Long Li, Jing Zhao
It is easy to form aggregate structure in Figure 1 because of its small size, large specific surface area and easy to reunite.
At the same time, the nucleating agent also has an effect on both the crystal grain structure and the unit cell structure.
The nucleating agent has an effect on the crystal grain structure.
At the level of the aggregation structure, crystallinity increases and spherulite size tends to decline with increasing nucleating agent.
Structure, J.
At the same time, the nucleating agent also has an effect on both the crystal grain structure and the unit cell structure.
The nucleating agent has an effect on the crystal grain structure.
At the level of the aggregation structure, crystallinity increases and spherulite size tends to decline with increasing nucleating agent.
Structure, J.
Online since: March 2015
Authors: Bo Tao Wang
The micrographitic structure of the AC was studied by X-ray diffraction (XRD).
The XRD and BJH results also show that amorphous carbon was the dominating form, and the pore size distribution represents micropore structure.
The micrographitic structure, surface topography and pore structure of the AC was characterized.
This further results in disordering in the internal structure and ultimately generates carbon structure with primarily amorphous carbon.
The XRD and BJH results demonstrate that the obtained Ac is microporous and the internal carbon structure is primarily amorphous carbon.
The XRD and BJH results also show that amorphous carbon was the dominating form, and the pore size distribution represents micropore structure.
The micrographitic structure, surface topography and pore structure of the AC was characterized.
This further results in disordering in the internal structure and ultimately generates carbon structure with primarily amorphous carbon.
The XRD and BJH results demonstrate that the obtained Ac is microporous and the internal carbon structure is primarily amorphous carbon.
Online since: November 2014
Authors: Zdzisław Bogdanowicz, Barbara Nasiłowska, Dariusz Zasada, Paweł Jóźwik
STRUCTURE AND MECHANICAL PROPERTIES OF 1.4539 AUSTENIC STEEL JOINTS MADE BY TIG AND LASER-BEAM WELDING
Zdzisław BOGDANOWICZ1, a, Barbara NASIŁOWSKA1, b *, Paweł JÓŹWIK 2,c, and Dariusz ZASADA 2,d
1 Military University of Technology, Faculty of Mechanical Engineering, Kaliskiego 2, 00-908 Warsaw
2 Military University of Technology, Faculty of Advanced Technology and Chemistry, Kaliskiego 2, 00-908 Warsaw
a zbogdanowicz@wat.edu.pl, b nasilowska.barbara@gmail.com, c pjozwik@wat.edu.pl, d dzasada@wat.edu.pl
Keywords: 1.4539 austenitic steel, welding, laser, TIG, mechanical properties, fatigue
Abstract.
Structure and microhardness In weld executed by TIG method with three beads, the flat crystallization front with staging grain boundaries melting are shown in Fig. 1 (a).
Weld structure made with TIG (a), (b) and laser method at beam parameters; P= 4.5kW and v= 1.4m.min (c), (d).
References [1] B.Rossi, Discussion on the use of stainless steel constructions in view of sustainability Contents lists available at Science Direct Thin-Walled Structures, (2014) [2] E.
Goss, Load capacity of steel structures taking into account low cycle fatigue, Archives of civil engineering, XLVIII, 2, (2002), ss. 183-203.
Structure and microhardness In weld executed by TIG method with three beads, the flat crystallization front with staging grain boundaries melting are shown in Fig. 1 (a).
Weld structure made with TIG (a), (b) and laser method at beam parameters; P= 4.5kW and v= 1.4m.min (c), (d).
References [1] B.Rossi, Discussion on the use of stainless steel constructions in view of sustainability Contents lists available at Science Direct Thin-Walled Structures, (2014) [2] E.
Goss, Load capacity of steel structures taking into account low cycle fatigue, Archives of civil engineering, XLVIII, 2, (2002), ss. 183-203.