Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Laldja Taïbi-Benziada"'
Publikováno v:
Arabian Journal for Science and Engineering. 40:2873-2879
The main purpose of the present work is the preparation of green dielectrics by solid-state reaction between two perovskites: CaTiO3 (CTO) and KMgF3 (KMF). Calcium titanate and potassium magnesium fluoride powders were previously synthesized, respect
Autor:
Laldja Taïbi-Benziada
Publikováno v:
Arabian Journal for Science and Engineering. 39:6635-6642
The purpose of this study was to investigate the dielectric properties of BaTiO3 (BTO) ceramics sintered with the aid of lithium fluoride. BTO with various ratios BaO/TiO2 (0.97, 1.00, 1.03) was synthesized by calcination of BaCO3 and TiO2 at 1100 °
Publikováno v:
International Journal of Engineering Research in Africa. 9:1-12
Cold-pressed pellets were prepared from the mixtures SrTiO3- 0.03MF2- 0.12LiF, M = Ca, Sr or Ba, then air-fired at 950 °C for 2 hours. The obtained samples were investigated by X-ray diffraction and scanning electron microscopy. Each ceramic is a pe
Autor:
Youcef Sedkaoui, Laldja Taïbi-Benziada
Publikováno v:
Spectroscopy Letters. 46:67-72
Calcium, strontium, and barium titanates were previously synthesized then mixed and wet-ground with 5 mol.% of lithium and calcium fluorides. These mixtures were pressed into pellets and air-fired. The ceramics were investigated by X-ray diffraction,
Autor:
Samira Nemouchi, Laldja Taïbi-Benziada
Publikováno v:
Materials Science Forum. :111-118
Various chemical compositions (1-x)CaTiO3+xMgF2+xLiF were prepared and dry-ground. The powder mixtures were pressed to pellets and co-fired at 900°C for 2h. The obtained ceramics were investigated by XRD, SEM, DSC and dielectric measurements. A new
Publikováno v:
Solid State Sciences. 11:151-155
New phases with initial composition (1 − x )CaTiO 3 − x NaF − x MgF 2 (0 ≤ x ≤ 0.20) have been prepared at low temperature (950 °C) from mixtures of CaTiO 3 and fluorides NaF and MgF 2 . The oxyfluorides obtained have been characterized by
Autor:
Meriem Meyar, Laldja Taïbi-Benziada
Publikováno v:
Journal of the European Ceramic Society. 27:1097-1100
Mixtures of (1-x)BaTiO 3 +xSrF2 +xLiF are prepared and dry-ground. The powders thus obtained are shaped to discs and sintered in free-air at 950 °C for 2 h. The shrinkage coefficient varies between 14.5% and 16.8%. The XRD patterns show the formatio
Autor:
Laldja Taïbi-Benziada
Publikováno v:
Materials Science Forum. :109-114
Several pellets of general formula Ba1-xMx(Ti1-xLix)O3-3xF3x were prepared from BaTiO3, MF2 ( M = Ca, Sr, Ba or Pb ) and LiF powders then sintered by the conventional solid state route at 900 or 1000°C for 1, 2 or 4 hours. X-Ray powder diffraction p
Effects of Processing Parameters on the Dielectric Properties of Ca(Ti0.95Li0.05)O2.85F0.15 Ceramics
Autor:
Laldja Taïbi-Benziada, A. Mezroua
Publikováno v:
Key Engineering Materials. :1281-1284
Publikováno v:
Key Engineering Materials. :1189-1192