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Online since: August 2004
Authors: Toshio Narita, Tomasz Brylewski, Kazimierz Przybylski, A. Stawiarski
Mickiewicza 30, 30-059 Cracow, Poland
2
Cracow University of Technology, Institute of Inorganic Chemistry and Technology,
ul.
The alloy surface layer at the alloy/scale interface exhibited Ag-Al/TiAl3 duplex structure.
Fig. 8a shows a duplex alloy substrate/TiAl2/TiAl3/sulphide scale structure of the alloy surface layer on the binary TiAl alloy and Fig. 8b shows a triplex Nb-Al/TiAl2/TiAl3 structure of the alloy surface layer.
The structure and composition of the scale on this alloy was similar to the scales formed on the TiAl and TiAlNb alloys.
The sulphidized TiAlAg alloy surface layer exhibited triplex structure of the composition: TiAl3/Al-Ag/TiAl2 (Fig. 9).
The alloy surface layer at the alloy/scale interface exhibited Ag-Al/TiAl3 duplex structure.
Fig. 8a shows a duplex alloy substrate/TiAl2/TiAl3/sulphide scale structure of the alloy surface layer on the binary TiAl alloy and Fig. 8b shows a triplex Nb-Al/TiAl2/TiAl3 structure of the alloy surface layer.
The structure and composition of the scale on this alloy was similar to the scales formed on the TiAl and TiAlNb alloys.
The sulphidized TiAlAg alloy surface layer exhibited triplex structure of the composition: TiAl3/Al-Ag/TiAl2 (Fig. 9).
Online since: May 2004
Authors: H.E. Mahnke, N. Ivanović, V. Koteski
The minimum-E values (ECdTe= -2.22, EZnTe= 1.77
eV/at) at distances dCdTe=2.423 Å, and dZnTe=2.24 Å, were obtained by the structure
optimization procedure.
The results of similar calculations of all possible NN-tetrahedra of the structure, for experimentally obtained distances [22] (Table 2), are presented in Fig. 2 (a) and (b).
This is in good agreement with the fact [9, 11] that low concentrations of Zn stabilize the structure.
Harrison, Elementary electronic structure, World Scientific, Singapore (1999)
[21] CRC Handbook of Chemistry and Physics, 1 st Student Edition, CRC Press, Florida (1988)
The results of similar calculations of all possible NN-tetrahedra of the structure, for experimentally obtained distances [22] (Table 2), are presented in Fig. 2 (a) and (b).
This is in good agreement with the fact [9, 11] that low concentrations of Zn stabilize the structure.
Harrison, Elementary electronic structure, World Scientific, Singapore (1999)
[21] CRC Handbook of Chemistry and Physics, 1 st Student Edition, CRC Press, Florida (1988)
Online since: July 2013
Authors: Li Min Zhou, Cheng Yan, Ming Chao Wang, Dilini Galpaya, Zheng Bo Lai, Lin Ma, Ning Hu, Qiang Yuan, Ruixiang Bai
In addition, the morphology of graphene is also governing the structure-property relationship.
The existing pentagon rings in graphene cause the change of curvatures of graphene and generate those novel nano-structures.
Chang, Structure, energy, and structural transformations of graphene grain boundaries from atomistic simulations.
Roth, The structure of suspended graphene sheets.
Chen, Tuning the electronic structure of graphene nanoribbons through chemical edge modification: A theoretical study.
The existing pentagon rings in graphene cause the change of curvatures of graphene and generate those novel nano-structures.
Chang, Structure, energy, and structural transformations of graphene grain boundaries from atomistic simulations.
Roth, The structure of suspended graphene sheets.
Chen, Tuning the electronic structure of graphene nanoribbons through chemical edge modification: A theoretical study.
Online since: October 2014
Authors: Kiattisak Sritrakulchai, Supphachan Rajsiri, Pongpicha Yamkamon
The structure and property relationship was characterized through tensile test and microstructure analysis.
(a) (b) (c) Fig.3 Optical micrographs showing the fracture surfaces (crack is located by arrow) of tensile specimen containing (a) Resin #1, (b) Resin #4, and (c) Resin #6 Table 3 Mechanical properties of unsaturated polyester and resins Tensile properties Unsaturated Polyester [7] Resin #1 Resin #2 Resin #3 Resin #4 Resin #5 Resin #6 Tensile strength at break (MPa) 55 247.25 ±10.19 178.94 ±12.03 163.76 ±3.95 158.00 ±2.72 152.27 ±4.03 149.26 ±1.80 Percent elongation at break (%) 2.0 7.56 ±0.42 6.74 ±0.34 6.64 ±0.45 6.29 ±0.20 6.10 ±0.23 5.68 ±0.16 Elastic modulus (GPa) 3.2 3.08 ±0.18 2.46 ±0.26 2.34 ±0.17 2.35 ±0.07 2.39 ±0.05 2.50 ±0.08 Failure analysis on the fracture surface was performed to determine the relationship between the structure and material properties in regards to proper processing.
Generally, polarity is dependent on the electronegativity as a result of the net dipole moment derived from the material structure [10].
Fryhle: Organic Chemistry 7th ed.
(a) (b) (c) Fig.3 Optical micrographs showing the fracture surfaces (crack is located by arrow) of tensile specimen containing (a) Resin #1, (b) Resin #4, and (c) Resin #6 Table 3 Mechanical properties of unsaturated polyester and resins Tensile properties Unsaturated Polyester [7] Resin #1 Resin #2 Resin #3 Resin #4 Resin #5 Resin #6 Tensile strength at break (MPa) 55 247.25 ±10.19 178.94 ±12.03 163.76 ±3.95 158.00 ±2.72 152.27 ±4.03 149.26 ±1.80 Percent elongation at break (%) 2.0 7.56 ±0.42 6.74 ±0.34 6.64 ±0.45 6.29 ±0.20 6.10 ±0.23 5.68 ±0.16 Elastic modulus (GPa) 3.2 3.08 ±0.18 2.46 ±0.26 2.34 ±0.17 2.35 ±0.07 2.39 ±0.05 2.50 ±0.08 Failure analysis on the fracture surface was performed to determine the relationship between the structure and material properties in regards to proper processing.
Generally, polarity is dependent on the electronegativity as a result of the net dipole moment derived from the material structure [10].
Fryhle: Organic Chemistry 7th ed.
Online since: September 2017
Authors: Sergiu Stanciu, Nicanor Cimpoeşu, Ramona Cimpoeşu, Victor Geantă, Ionelia Voiculescu, Vasile Manole, Radu Cristian Crăciun, Florin Săndulache
Some of the shape memory alloys present a huge damping capacity during the solid state transformation (M↔A) based on the re-orientation and accommodation of the material structure.
Iron based shape memory alloys, based on them damping capacity, present possible applications in civil engineering structures: passive vibration damping and energy dissipation, active vibration control, actuator applications and the utilization of the SME for tensioning applications or sensors.
Wang, Research and applications of viscoelastic vibration damping materials: A Review, Composite Structures. 136 (2016) 460-480
Mareci, Electrochemical Characterization of a New Biodegradable FeMnSi Alloy Coated with Hydroxyapatite-Zirconia by PLD Technique, Journal of Chemistry, Article Number: 9520972 (2016) 1-9
Iron based shape memory alloys, based on them damping capacity, present possible applications in civil engineering structures: passive vibration damping and energy dissipation, active vibration control, actuator applications and the utilization of the SME for tensioning applications or sensors.
Wang, Research and applications of viscoelastic vibration damping materials: A Review, Composite Structures. 136 (2016) 460-480
Mareci, Electrochemical Characterization of a New Biodegradable FeMnSi Alloy Coated with Hydroxyapatite-Zirconia by PLD Technique, Journal of Chemistry, Article Number: 9520972 (2016) 1-9
Online since: June 2013
Authors: Ling Mei Zhang
With the continuous development of the polymer chemistry industry and the production capacity of China's national economy since the 20th century, the type of geomembrane material from single complex.
The structure of the GCL bentonite, sandwiched between two layers of geotextile synthetic material through the needle, suture, or bonded.
Channel cross-section structure, impervious membrane material laying the scope of the whole shop-style, semi-Shop style and shop the end of three kinds.
Antifreeze requirements engineering, seepage control structure should be taken to the freezing measures, laying impermeable layer of rigid plastic foam insulation layer, or replacement of non-frost heaving soil.
Composite impermeable structure is more economical and durable, the majority of water conservancy workers in practice to further improve the composite impermeable form.
The structure of the GCL bentonite, sandwiched between two layers of geotextile synthetic material through the needle, suture, or bonded.
Channel cross-section structure, impervious membrane material laying the scope of the whole shop-style, semi-Shop style and shop the end of three kinds.
Antifreeze requirements engineering, seepage control structure should be taken to the freezing measures, laying impermeable layer of rigid plastic foam insulation layer, or replacement of non-frost heaving soil.
Composite impermeable structure is more economical and durable, the majority of water conservancy workers in practice to further improve the composite impermeable form.
Online since: June 2015
Authors: Yuriy Suhak, Michal Schulz, Denny Richter, Holger Fritze
Kihara, The temperature dependence of the crystal structure of berlinite, a quartz-type form of AlPO4, Phys.
Buzanov, Advanced piezoelectric crystal Ca3TaGa3Si2O14: growth, crystal structure perfection, and acoustic properties, Appl.
Morikoshi, Crystal structure and piezoelectric properties of four component langasite A3BGa3Si2O14 (A = Ca or Sr, B = Ta or Nb), Trans.
Fritze, Electromechanical properties and defect chemistry of high-temperature piezoelectric materials, Ionics 15 (2009) 157-161
Shrout, Characterization of high temperature piezoelectric crystals with an ordered langasite structure, J.
Buzanov, Advanced piezoelectric crystal Ca3TaGa3Si2O14: growth, crystal structure perfection, and acoustic properties, Appl.
Morikoshi, Crystal structure and piezoelectric properties of four component langasite A3BGa3Si2O14 (A = Ca or Sr, B = Ta or Nb), Trans.
Fritze, Electromechanical properties and defect chemistry of high-temperature piezoelectric materials, Ionics 15 (2009) 157-161
Shrout, Characterization of high temperature piezoelectric crystals with an ordered langasite structure, J.
Online since: October 2014
Authors: Elena Yurievna Pikalova, Alexander Anatolievich Kolchugin, Nina Mihailovna Bogdanovich, Dimitry Igorevich Bronin
Among the materials investigated, La2NiO4+δ (LNO) was found to possess the highest values of the oxygen surface heteroexchange constants k, which is higher by one or two orders of magnitude than that for the best mixed conductors with perovskite structure [6–8].
Ltd. diffractometer with Ni-filtered CuKα radiation in the range of 15º£2q£85º), the specimens were single-phased and had the structure of cubic fluorite (Fm3m) with a unit cell parameter a=5.5453(6) Å.
The results of X-ray diffraction analysis revealed in case of La2–xCaxNiO4+δ an appearance of K2NiF4-like structure (tetragonal I4/mmm space group) (Fig. 1).
In case of the LNF rhombohedrally distorted perovskite structure (space group R3c) with lattice parameters a=5.5064(5) Å and c=13.2504(11) Å was found, as reported in [16].
Manthiram, Comparison of the crystal chemistry and electrical properties of La2–xAxNiO4 (A = Ca, Sr and Ba), Mater.
Ltd. diffractometer with Ni-filtered CuKα radiation in the range of 15º£2q£85º), the specimens were single-phased and had the structure of cubic fluorite (Fm3m) with a unit cell parameter a=5.5453(6) Å.
The results of X-ray diffraction analysis revealed in case of La2–xCaxNiO4+δ an appearance of K2NiF4-like structure (tetragonal I4/mmm space group) (Fig. 1).
In case of the LNF rhombohedrally distorted perovskite structure (space group R3c) with lattice parameters a=5.5064(5) Å and c=13.2504(11) Å was found, as reported in [16].
Manthiram, Comparison of the crystal chemistry and electrical properties of La2–xAxNiO4 (A = Ca, Sr and Ba), Mater.
Online since: September 2017
Authors: Amir Ali Youzbashi, Elaheh Moghaddam, Asghar Kazemzadeh
For example it is often difficult to control the hydrolysis and condensation resulting in disordered precipitations and crystal defects in the crystalline structure of nanoparticles [11].
The crystallite structures of the dried colloids were studied by using a powder X-ray diffractometer (XRD), (Philips PW3710 fitted with Cu Kα source).
The labeled peaks demonstrate the presence of impurity phase in addition to the wurtzite structure.
Wan, Synthesis of monodispersed wurtzite structure CuInSe2 nanocrystals and their application in high-performance organic− inorganic hybrid photodetectors, J.
Cintas, Power ultrasound in organic synthesis: moving cavitational chemistry from academia to innovative and large-scale applications, Chem.
The crystallite structures of the dried colloids were studied by using a powder X-ray diffractometer (XRD), (Philips PW3710 fitted with Cu Kα source).
The labeled peaks demonstrate the presence of impurity phase in addition to the wurtzite structure.
Wan, Synthesis of monodispersed wurtzite structure CuInSe2 nanocrystals and their application in high-performance organic− inorganic hybrid photodetectors, J.
Cintas, Power ultrasound in organic synthesis: moving cavitational chemistry from academia to innovative and large-scale applications, Chem.
Online since: June 2022
Authors: Budi Purnama, Hendri Widiyandari, Utari Utari, Retna Arilasita, Suharno Suharno
All diffraction peaks matched International Centre of Diffraction Data card no. 89-0598 of hematite powder with rhombohedral structure and space group R3c [10].
The results obtained are in accordance with several previous reports to obtain the hematite structure through different treatments.
XRD data confirmed the rhombohedral structure with space group R3c for all samples.
Journal of Materials Chemistry A, 6(28), 13968–13974
A., & Ahmed, F., 2021, Cubic shaped hematite (α-Fe2O3) micro-structures composed of stacked nanosheets for rapid ethanol sensor application.
The results obtained are in accordance with several previous reports to obtain the hematite structure through different treatments.
XRD data confirmed the rhombohedral structure with space group R3c for all samples.
Journal of Materials Chemistry A, 6(28), 13968–13974
A., & Ahmed, F., 2021, Cubic shaped hematite (α-Fe2O3) micro-structures composed of stacked nanosheets for rapid ethanol sensor application.