Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Kriaa A"'
Publikováno v:
Materials; Volume 14; Issue 7; Pages: 1696
Materials, Vol 14, Iss 1696, p 1696 (2021)
Materials
Materials, MDPI, 2021, 14 (7), pp.1696. ⟨10.3390/ma14071696⟩
Materials, Vol 14, Iss 1696, p 1696 (2021)
Materials
Materials, MDPI, 2021, 14 (7), pp.1696. ⟨10.3390/ma14071696⟩
International audience; In a scanning electron microscope, the backscattered electron intensity modulations are at the origin of the contrast of like-Kikuchi bands and crystalline defects. The Electron Channeling Contrast Imaging (ECCI) technique is
Publikováno v:
Applied Physics A. 127
The synthesis of (Ba 0.99 Ca 0.01 )(Zr 0.2 Ti 0.8 )O 3 (BCZT) and doped (Ba 0.99 Ca 0.01 )(Zr 0.2 Ti 0.8-x Mn x )O 3 (BCZT-xMn) ceramics was successfully carried out by the solid-state method. The doping effect is followed by X-ray powder diffraction
Publikováno v:
Materials Chemistry and Physics. 234:196-200
The praseodymium Pr3+ doped BaTi0.9(Yb0.5Nb0.5)0.1O3 (BTYN01) ceramic, under low concentration (0.1%), was prepared by a conventional ceramic fabrication technique and its phase structure, microstructure, dielectric, vibrational and photoluminescence
Publikováno v:
Ceramics International. 44:13595-13601
In this study, lead-free Ba1-xCaxZryTi1-yO3 (BCTZ(x, y)) ceramics were prepared by means of the classic solid-state reaction method. The morphotropic phase transition (MPB) from the orthorhombic to the tetragonal phase (O-T) was identified in this co
Autor:
Issa Kriaa, Z. Abdelkafi
Publikováno v:
Ceramics International. 44:4413-4418
The present work investigates the structural, dielectric, ferroelectric, Raman spectroscopy properties and electrocaloric effect in lead free BaTi1−x(Nb0.5Yb0.5)xO3 (BTNY) (x = 0.1 and x = 0.125) ceramics. The dielectric study indicated a relaxor b
Publikováno v:
Chemical Engineering and Processing - Process Intensification. 124:164-173
The present study is conducted to investigate the effect(s) of ultrasonic pretreatment on the extraction of essential oils from dried leaves of lemongrass (Cymbopogon flexuosus) by hydro-distillation. The drying process was carried out within a force
Publikováno v:
Materials Science and Engineering: B. 227:110-115
Polycrystalline lead-free calcium bismuth titanate (Ba1−xCax)1−3y/2BiyTiO3 (BCBT) ferroelectric ceramics were synthesized by conventional solid state reaction process. The dielectric permittivity and ferroelectric hysteresis loops were measured.
Publikováno v:
Flow Measurement and Instrumentation
Flow Measurement and Instrumentation, 2021, 81, pp.102013. ⟨10.1016/j.flowmeasinst.2021.102013⟩
Flow Measurement and Instrumentation, 2021, 81, pp.102013. ⟨10.1016/j.flowmeasinst.2021.102013⟩
International audience; The present work focuses on the study of slugs occurring in a two-phase flow of a confined rectangular channel: conditions of appearance and effect on the flow behavior. Three-dimensional numerical simulations have been carrie
Publikováno v:
Thermal Science and Engineering Progress. 22:100838
This paper investigates the laser welding process of dissimilar Aluminum-Magnesium materials. A three-dimensional transient model has been developed using the 'Ansys-fluent' software to study the transport phenomenon in the weld bead. The results sho
Publikováno v:
Journal of Electronic Materials. 46:2529-2532
This work is meant to study the electrocaloric effect in 0.9(0.75Pb(Mg1/3 Nb2/3)O3-0.25PbTiO3)-0.1PbSnO3 (0.9(PMN-PT)-0.1PS) ferroelectric ceramics. The adiabatic temperature change (ΔT) of 0.9(PMN-PT)-0.1PS ceramic, due to the application or withdr