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Online since: July 2021
Authors: Maxim М. Sychov, Maxim Yu. Arsentev, Aleksei I. Makogon, Sergey V. Balabanov
The article presents the results of a study of the physical and mechanical properties of cellular structures fabricated by means of additive manufacturing.
A significant limitation of classical honeycomb structures is the significant anisotropy of properties.
Thus, the development of cellular structures with high mechanical characteristics regardless of the direction of load is an urgent task.
In the area of plastic deformation, irreversible destruction of the sample geometry occurs, which is unacceptable for supporting structures.
Lebedev, Ceramic Materials with the Topology of Triple Periodic Minimal Surfaces for Constructions Functioning Under Conditions of Extreme Loads, Glass Physics and Chemistry 43(6) 582–584
A significant limitation of classical honeycomb structures is the significant anisotropy of properties.
Thus, the development of cellular structures with high mechanical characteristics regardless of the direction of load is an urgent task.
In the area of plastic deformation, irreversible destruction of the sample geometry occurs, which is unacceptable for supporting structures.
Lebedev, Ceramic Materials with the Topology of Triple Periodic Minimal Surfaces for Constructions Functioning Under Conditions of Extreme Loads, Glass Physics and Chemistry 43(6) 582–584
Online since: December 2011
Authors: Peng Wang, Ling Jiang, Xiang Li Meng
R.China
2 Department of Chemistry, Faculty of Science, Harbin Institute of Technology, P.O.
Their structures and properties were characterized by FT-IR, DSC, TG and XRD.
PMDA, i-BPDA and HQDPA were supplied from Changchun Institute of Applied Chemistry.
Scheme 1 shows the schemes and structures of PIs.
The Tgs of polyimides were in the range of 336-369 oC and varied with the structure of the dianhydride component.
Their structures and properties were characterized by FT-IR, DSC, TG and XRD.
PMDA, i-BPDA and HQDPA were supplied from Changchun Institute of Applied Chemistry.
Scheme 1 shows the schemes and structures of PIs.
The Tgs of polyimides were in the range of 336-369 oC and varied with the structure of the dianhydride component.
Online since: July 2012
Authors: Han Bo Zou, Wei Ming Lin, Sheng Zhou Chen, Wei Yang, Liang Wei Li
In other words, it would be to optimize the catalyst layer structure by optimizing the catalyst loading.
SEM images showed an irregular lamellar structure formed in the catalyst.
It is notable that the different Co loadings in catalysts couldn’t lead to the change of the surface structure.
The variations of activity for the ORR may be caused by crystal structure changes with the Co loadings.
The further research will focus on the structure and the catalytic active site of catalysts.
SEM images showed an irregular lamellar structure formed in the catalyst.
It is notable that the different Co loadings in catalysts couldn’t lead to the change of the surface structure.
The variations of activity for the ORR may be caused by crystal structure changes with the Co loadings.
The further research will focus on the structure and the catalytic active site of catalysts.
Online since: March 2017
Authors: Radosław Zaleski, Marek Gorgol, Agnieszka Kierys
Curie-Sklodowskiej 1, 20-031 Lublin, Poland
2 Department of Adsorption, Faculty of Chemistry, Maria Curie-Sklodowska University,
Pl.
Moreover, the structure of the silica gel, obtained after polymer removal, depends on chemical character of the template, rather than its porosity.
SEM images revealed complex structure of polymer templates.
However, the collapse of the structure results in reduction of mesopore volume.
Shantarovich, Specifics of positron studies of microheterogeneous systems as applied to new polymeric sorbents, High Energy Chemistry, 49 (2015) 199-206
Moreover, the structure of the silica gel, obtained after polymer removal, depends on chemical character of the template, rather than its porosity.
SEM images revealed complex structure of polymer templates.
However, the collapse of the structure results in reduction of mesopore volume.
Shantarovich, Specifics of positron studies of microheterogeneous systems as applied to new polymeric sorbents, High Energy Chemistry, 49 (2015) 199-206
Online since: August 2021
Authors: Jigmeddorj Vanchinkhuu, Erdenee Bayanjargal, Baatar Duurenbuyan, Jamsranjav Erdenetogtokh, Zhi Qiang Song
We produced these structures with the DC arc between graphite (natural and purified) electrodes and graphite-metal electrodes in air.
We identified visual features of these nanosized structures comparing to the same structures formed by DC arc in water.
The outer view and internal structure of the deposit on the cathode are shown in Fig. 4.
Their inner structure of deposition has many empty spaces between particulates.
V) gratefully acknowledges the valuable technical support from the Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials at Inner Mongolia Normal University, China.
We identified visual features of these nanosized structures comparing to the same structures formed by DC arc in water.
The outer view and internal structure of the deposit on the cathode are shown in Fig. 4.
Their inner structure of deposition has many empty spaces between particulates.
V) gratefully acknowledges the valuable technical support from the Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials at Inner Mongolia Normal University, China.
Online since: October 2008
Authors: Sami Areva, Ari Rosling, Virpi Ääritalo
The surface chemistry was analyzed by XPS and the topography by AFM.
The sol-gel titania-silica materials made with prehydrolyzed titania formed heterogeneous structure where the TiO2 and SiO2 particles were partly interconnected and covered with soluble silica.
The silica sol is usually partially hydrolyzed before the addition of the titanium alkoxide, in order to optimize the homogeneity of the structure and mechanical properties.
Incorporation of silicon into the material structures e.g. enhances osteoblast response of hydroxyapatite thin films [3,4] and sol-gel titania films [5].
Discussion The sol-gel titania-silica materials easily form heterogeneous structure where the TiO2 and SiO2 particles are partly interconnected and covered with soluble silicon [6,7].
The sol-gel titania-silica materials made with prehydrolyzed titania formed heterogeneous structure where the TiO2 and SiO2 particles were partly interconnected and covered with soluble silica.
The silica sol is usually partially hydrolyzed before the addition of the titanium alkoxide, in order to optimize the homogeneity of the structure and mechanical properties.
Incorporation of silicon into the material structures e.g. enhances osteoblast response of hydroxyapatite thin films [3,4] and sol-gel titania films [5].
Discussion The sol-gel titania-silica materials easily form heterogeneous structure where the TiO2 and SiO2 particles are partly interconnected and covered with soluble silicon [6,7].
Online since: June 2019
Authors: Jia Fu
Based on the previous studies, the mechanical properties prediction of C-S-H structures from nano- to macro-scale structure can be realized step by step, thus the simulated structure and the experimental structure have been unified.
Journal of Physics and Chemistry of Solids, 2017, 101:74
The crystal structure of the 11Å natural tobermorite Ca2.25[Si3O7.5(OH)1.5]·1H2O[J].
Lecture on the structure of C-S-H, AFm and AFt phases.
Journal of Physical Chemistry B, 2004, 108(4): 1255
Journal of Physics and Chemistry of Solids, 2017, 101:74
The crystal structure of the 11Å natural tobermorite Ca2.25[Si3O7.5(OH)1.5]·1H2O[J].
Lecture on the structure of C-S-H, AFm and AFt phases.
Journal of Physical Chemistry B, 2004, 108(4): 1255
Online since: December 2014
Authors: Song Li, Yun Long Cui, Long Fei Mu
The phrase, structure and morphology of FePO4 were characterized by XRD and SEM .
As a ligand, the ammonium oxalate takes on the structure of straight chain and it has two coordination sites.
The structure and form of Iron phosphate depends on the synthetic technology and how we add the ligands.
[2] Férey G.Microporous solids:from organically templated inorganic skeletons to hybrid frameworks ecumenism in chemistry [J].Chem.Mater,2001,13(10):3084-3098
Applied Chemistry,2002,19(1):15-17
As a ligand, the ammonium oxalate takes on the structure of straight chain and it has two coordination sites.
The structure and form of Iron phosphate depends on the synthetic technology and how we add the ligands.
[2] Férey G.Microporous solids:from organically templated inorganic skeletons to hybrid frameworks ecumenism in chemistry [J].Chem.Mater,2001,13(10):3084-3098
Applied Chemistry,2002,19(1):15-17
Online since: August 2010
Authors: Shi Wei Zhang, Li Yuan Hou, Yong Chao Han, Yuan Hua Xie
The principle, structure,
process and characteristics of this method are introduced in detail.
The Structure, Principle and Characteristics Structure of Equipment.
Therefore, the symmetrical structure is always top-priority for the co-deposition equipment.
Journal of Solids and Structures, 42 (2005), P. 6141 [4] Andrzej Posmyk.
Coordination Chemistry Reviews, 233-234 (2002), P. 107 [11] Ken Kaluzny.
The Structure, Principle and Characteristics Structure of Equipment.
Therefore, the symmetrical structure is always top-priority for the co-deposition equipment.
Journal of Solids and Structures, 42 (2005), P. 6141 [4] Andrzej Posmyk.
Coordination Chemistry Reviews, 233-234 (2002), P. 107 [11] Ken Kaluzny.