Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: August 2023
Authors: Farid Abdi, Najwa Gouitaa, Malika Ahabboud, Taj-Dine Lamcharfi
The X-ray diffraction data revealed the formation of both rhombohedral and tetragonal structures.
The most studied and used piezoelectric material is the titano of lead zirconates PbZrxTi1 -xO3, it has a crystalline structure of perovskite-type which results from a solid solution between the lead titanate PbTiO3 (PT) of tetragonal structure and the lead zirconate PbZrO3 (PZ) of rhombohedral structure [2-3].
The DRX measurements show that all PZTFx samples have two pure rhombohedral and tetragonal perovskite crystal structures of space group R3c and P4mm respectively.
[6] Noheda B, Gonzalo J A, A tetragonal-to-monoclinic phase transition in a ferroelectric perovskite: the structure of PbZr0.52Ti0.48O3, Physical review.
Bamzai, Effect of Ni / Nb on structure, electrical and ferroelectric properties of 0.5PNN-0.5PZT ceramics,(2015) pp. 1–9
The most studied and used piezoelectric material is the titano of lead zirconates PbZrxTi1 -xO3, it has a crystalline structure of perovskite-type which results from a solid solution between the lead titanate PbTiO3 (PT) of tetragonal structure and the lead zirconate PbZrO3 (PZ) of rhombohedral structure [2-3].
The DRX measurements show that all PZTFx samples have two pure rhombohedral and tetragonal perovskite crystal structures of space group R3c and P4mm respectively.
[6] Noheda B, Gonzalo J A, A tetragonal-to-monoclinic phase transition in a ferroelectric perovskite: the structure of PbZr0.52Ti0.48O3, Physical review.
Bamzai, Effect of Ni / Nb on structure, electrical and ferroelectric properties of 0.5PNN-0.5PZT ceramics,(2015) pp. 1–9
Online since: October 2007
Authors: Maike Siemons, Ulrich Simon
X-ray diffraction (XRD) and
scanning electron microscopy (SEM) were used to confirm the structure and morphology of the
materials.
In addition HTE can help to find correlations between material structure and sensing properties.
In continuation of earlier studies [14,15] on LnMO3 we can confirm the model proposed for structure-property-relations based on the (M-O) binding energy and the sensitivity of the materials towards ethanol.
The materials prepared were well suited for thick layer preparation on interdigital electrode structures.
The platinum IDC has a structure width of 110 µm and each well has a diameter of 5 mm, as shown on the right hands isde of Figure 1 [17].
In addition HTE can help to find correlations between material structure and sensing properties.
In continuation of earlier studies [14,15] on LnMO3 we can confirm the model proposed for structure-property-relations based on the (M-O) binding energy and the sensitivity of the materials towards ethanol.
The materials prepared were well suited for thick layer preparation on interdigital electrode structures.
The platinum IDC has a structure width of 110 µm and each well has a diameter of 5 mm, as shown on the right hands isde of Figure 1 [17].
Online since: July 2022
Authors: T.P. Tyuryakhina, S.S. Gladkin, V.T. Erofeev, Aleksander Tingaev
Computers and Structures. 1989. 33(4).
Leningrad, Chemistry Publ., 1988, 272 p
Composite materials and structures.
Structure, self-organization, properties.
Structural theory and analysis of structures. 2018, No. 3, pp. 7-17
Leningrad, Chemistry Publ., 1988, 272 p
Composite materials and structures.
Structure, self-organization, properties.
Structural theory and analysis of structures. 2018, No. 3, pp. 7-17
Online since: May 2021
Authors: Vladimir Ananiev, Ilya Vasilyev, Yulia Sultanova, Valentina Kolpakova
Properties and structure of composite films are studied using test methods, rheological parameters, optical microscopy, and differential scanning calorimetry.
This increase in viscosity is presumably associated with formation of agglomeration of starch particles in melt in structure of BHC compositions.
It is worth noting that for all three variants of BHC compositions that use MD, the mechanical properties decrease with an increase in content of TS in BHC structure.
It is expected that increase in concentration affects the ability of material to rearrange its structure, as well as the ability to form energy bonds between components in structure of material, leading to their reduction.
Griffin, Biodegradable Fillers in Thermoplastics, Advances in Chemistry. 134 (1974) 159-170. https://doi.org/10.1021/ba-1974-0134.ch016 [9] J.L.
This increase in viscosity is presumably associated with formation of agglomeration of starch particles in melt in structure of BHC compositions.
It is worth noting that for all three variants of BHC compositions that use MD, the mechanical properties decrease with an increase in content of TS in BHC structure.
It is expected that increase in concentration affects the ability of material to rearrange its structure, as well as the ability to form energy bonds between components in structure of material, leading to their reduction.
Griffin, Biodegradable Fillers in Thermoplastics, Advances in Chemistry. 134 (1974) 159-170. https://doi.org/10.1021/ba-1974-0134.ch016 [9] J.L.
Online since: June 2025
Authors: Li Jun Han, Guo Jun Li, Zhi Guo Sun, Qing Dong Lang, Guan Lei
RE EC is suitable for welding galvanized plates because of its special twin microstructures, which can change the properties and structure of the erosion layer and reduce the interfacial tension.
The functions of holmium (Ho) and europium (Eu) in CAs mainly include refining grain, purifying structure, improving heat resistance and corrosion resistance.
Ho and Eu can form twin structure in the CA through deformation stress and phase transition stress.
Owing to the special action of rare earth elements, RE EC forms twin structure.
Shen, et al, An investigation on morphology and microstructure of Cu–Cr-Al2/O3 powders prepared by mechanical milling, Proceedings of 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering. 5(2017)
The functions of holmium (Ho) and europium (Eu) in CAs mainly include refining grain, purifying structure, improving heat resistance and corrosion resistance.
Ho and Eu can form twin structure in the CA through deformation stress and phase transition stress.
Owing to the special action of rare earth elements, RE EC forms twin structure.
Shen, et al, An investigation on morphology and microstructure of Cu–Cr-Al2/O3 powders prepared by mechanical milling, Proceedings of 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering. 5(2017)
Online since: December 2023
Authors: Ahmed Sharif, Ayeman Mazdi Nahin, Md Mahmudul Hasan, S.M. Nasim Rokon
., Mg51Zn20, MgZn, Mg4Zn7, MgZn2 and Mg2Zn11 were observed in the structures.
In recent years, the crystallographic structures of the Mg-Zn intermetallics have been studied extensively.
Mg2Zn11 is reported to have a cubic structure with Pm3̄ space group with a = 0.8552 nm [18].
The slip system varies according to crystal structure and hence the deformation behavior and degree of strain [30][31].
Li, First-principles research on the electronic and magnetic properties of MgZn2 phase, Chinese Journal of Inorganic Chemistry. 31 (2015) 2143–2151
In recent years, the crystallographic structures of the Mg-Zn intermetallics have been studied extensively.
Mg2Zn11 is reported to have a cubic structure with Pm3̄ space group with a = 0.8552 nm [18].
The slip system varies according to crystal structure and hence the deformation behavior and degree of strain [30][31].
Li, First-principles research on the electronic and magnetic properties of MgZn2 phase, Chinese Journal of Inorganic Chemistry. 31 (2015) 2143–2151
Online since: September 2023
Authors: Miguel Ángel Pardo-Vicente, Daniel Moreno Nieto, Daniel Moreno-Sanchez, Pablo Pavón-Domínguez, Miriam Herrera-Collado
Universidad de Cádiz 10, E-11519 Puerto Real, Cadiz, Spain
4Department of Materials Science and Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, INNANOMAT, IMEYMAT, University of Cádiz.
In order to compare these groups, a study of the internal structure was carried out by X-Ray CT along with a characterization of their tensile mechanical properties.
In this work X-Ray CT has been applied to different samples of PLA that present a very different internal structure.
As mentioned before, low layer heights produce smaller internal voids, decreasing the overlapping effect and creating a more homogeneous internal structure.
This distributes the stresses more evenly throughout the structure.
In order to compare these groups, a study of the internal structure was carried out by X-Ray CT along with a characterization of their tensile mechanical properties.
In this work X-Ray CT has been applied to different samples of PLA that present a very different internal structure.
As mentioned before, low layer heights produce smaller internal voids, decreasing the overlapping effect and creating a more homogeneous internal structure.
This distributes the stresses more evenly throughout the structure.
Online since: May 2013
Authors: Zheng Yi Jiang, Dong Bin Wei, Liang Hao, Jian Guo Peng, Shu Zheng Lu, Lei Zhu Jiang, Xia Wei Cheng, Jing Wei Zhao
Some oxide grains consist of spinel crystal structure, which should be spinel Manganese Chromite.
In wet air, spinels are formed unevenly on the surface with different sizes and crystal structures as illustrated in Fig. 5(b), (c) and (d).
Spinel structure manganese chromite was found incorporated into chromia layer with more in dry air and less in wet air.
Surface morphology and EDS analysis indicate that some oxide grains consist of spinel crystal structure, which should be spinel MnCr2O4, however, most grains are still Cr2O3.
Odriozola: Materials Chemistry vol. 8, (1998). pp. 2293-2298 [9] D.
In wet air, spinels are formed unevenly on the surface with different sizes and crystal structures as illustrated in Fig. 5(b), (c) and (d).
Spinel structure manganese chromite was found incorporated into chromia layer with more in dry air and less in wet air.
Surface morphology and EDS analysis indicate that some oxide grains consist of spinel crystal structure, which should be spinel MnCr2O4, however, most grains are still Cr2O3.
Odriozola: Materials Chemistry vol. 8, (1998). pp. 2293-2298 [9] D.
Online since: April 2018
Authors: Cristina Teișanu, Ion Cinca
The geometry, surface finishing and internal architecture of the BGS (porosity, pore size and structure) are essential for their osteoconductive properties [10-13].
Porous HAp bioceramics with high porosity and 3D interconnectivity have a cellular structure similar to that of trabecular bone, which is beneficial to nutrient diffusion, cell migration and bone ingrowth [19].
In this research porous HAp-based biocomposites are prepared using different foaming agents to generate pores and the two step sintering technique to further consolidate the porous structure.
The two step sintering technique (TSS) was used to consolidate the final structure and, most important, to avoid grain growth which occurs mainly during the final stage of the process.
Tanasescu: submitted to Arabian Journal of Chemistry (2017) [31] S.
Porous HAp bioceramics with high porosity and 3D interconnectivity have a cellular structure similar to that of trabecular bone, which is beneficial to nutrient diffusion, cell migration and bone ingrowth [19].
In this research porous HAp-based biocomposites are prepared using different foaming agents to generate pores and the two step sintering technique to further consolidate the porous structure.
The two step sintering technique (TSS) was used to consolidate the final structure and, most important, to avoid grain growth which occurs mainly during the final stage of the process.
Tanasescu: submitted to Arabian Journal of Chemistry (2017) [31] S.