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Structural characterization and photoluminescence behavior of pure and doped potassium strontium niobates ceramics with tetragonal tungsten-bronze structure
(2016-03-01)
KSr2Nb5O15 and K1.2Sr1.6Ln0.2Nb5O15 (Ln=La, Pr, and Nd) were synthesized by the Pechini method and calcined at 1373 K for 10 h under air atmosphere. Rietveld refinements indicated the presence of structural defects in both ...
Preparation of pyrochlore-free PMN by an alternative chemical method
(Taylor & Francis Ltd, 2006-01-01)
This work reports the synthesis of the MgNb(2)O(6) and the ferroelectric lead magnesium niobate Pb(Mg(1/3)Nb(2/3))O(3) (PMN) using fine precursor powders obtained from a chemical Oxide Precursor Method (OPM). To obtain ...
Preparation of pyrochlore-free PMN by an alternative chemical method
(Taylor & Francis Ltd, 2006-01-01)
This work reports the synthesis of the MgNb(2)O(6) and the ferroelectric lead magnesium niobate Pb(Mg(1/3)Nb(2/3))O(3) (PMN) using fine precursor powders obtained from a chemical Oxide Precursor Method (OPM). To obtain ...
Effects of the addition of ions barium on the structural and electrical properties of PZT ceramic
(2014)
Lead zirconate titanate, with Zr/Ti ratio of 53/47 was prepared by the polymeric precursor method. It was investigated the barium (II) modification at 0.0, 0.2, 0.4 and 0.6 mol% in substitution to the lead (II) cation in ...
Characterization of SiC and Al2O3 Ceramics Exposed to Nitrogen Ions from Inverse-Z Pinch Plasma Discharge
(2017-07-02)
Silicon carbide ceramics are used for several industry applications, such as structural coating, ballistic armor, thermal coating protection, high performance mirror substrate, catalyst supports, etc. In this work, dense ...
Characterization of SiC and Al2O3 Ceramics Exposed to Nitrogen Ions from Inverse-Z Pinch Plasma Discharge
(Ieee, 2017-01-01)
Silicon carbide ceramics are used for several industry applications, such as structural coating, ballistic armor, thermal coating protection, high performance mirror substrate, catalyst supports, etc. In this work, dense ...
Influence of resin cement thickness and temperature variation on mechanical behavior of dental ceramic fragment restoration
(2019-03-12)
To evaluate the stress behavior of ceramic fragment restoration, varying the thickness of the cement layer and intraoral temperature variation. A solid model of a upper lateral incisor was obtained and a defect at enamel ...
Comparision of the direct costs between the constructive processes using reinforced concrete and structural mansory with ceramics and concrete block - case study
(Grupo de Pesquisa Virtuhab, 2017-05-03)
The housing deficit in Brazil and the government openness to home financing have increased
investment by construction companies in the construction of social housing. Structural masonry
has become a great option as it ...
Mechanochemical synthesis of ceramic powders with perovskite structure
(Elsevier B.V., 2014)
Optical and structural properties of Mn2+ doped PbGeO3-SbPO4 glasses and glass-ceramics
(Elsevier B.V., 2016-01-01)
This paper shows the study of optical and structural properties of SbPO4-PbGeO3-MnCl2 glass and glass-ceramics. Glass was prepared by melting-quenching methodology while the glass ceramic was obtained by controlled thermal ...