scholarly journals Electrical conductivity, density and liquidus temperature of KCl–PbCl2 equimolar melt with addition of lead oxide

Author(s):  
A. N. Efremov ◽  
N. P. Kulik ◽  
A. A. Kataev ◽  
A. P. Apisarov ◽  
A. A. Redkin ◽  
...  
2018 ◽  
Vol 7 (4) ◽  
pp. 547-551
Author(s):  
Dalal Hassan ◽  
Ahmed Hashim

Piezoelectric materials have been prepared from (poly-methyl methacrylate-lead oxide) nanocomposites for electronic applications. The lead oxide nanoparticles were added to poly-methyl methacrylate by different concentrations are (4, 8, and 12) wt%. The structural and dielectric properties of nanocomposites were studied. The results showed that the dielectric constant and dielectric loss of nanocomposites decrease with increase in frequency of applied electric field. The A.C electrical conductivity increases with increase in frequency. The dielectric constant, dielectric loss and A.C electrical conductivity of poly-methyl methacrylate increase with increase in lead oxide nanoparticles concentrations. The results of pressure sensor showed that the electrical resistance of (PMMA-PbO2) nanocomposites decreases with increase in pressure.


2020 ◽  
Vol 400 ◽  
pp. 186-192
Author(s):  
A.S. Vusikhis ◽  
Evgeny N. Selivanov ◽  
A.N. Dmitriev ◽  
V.P. Chentsov ◽  
V.V. Ryabov

Boron oxide-based systems on structure and properties are similar to silicate systems, but they are more fusible and so are widely used in modelling various metallurgical processes. This paper presents the results of viscosity, electrical conductivity, surface tension and density measurements of the B2O3–CaO system with a content of 25–45% CaO in the temperature range above the liquidus temperature. To measure viscosity, vibration viscometry was used. Electrical conductivity was measured via the contact method using an alternating current bridge. Surface tension and density were measured using the lying drop method. The obtained results were used to describe the structure of borate melts.


2020 ◽  
Vol 65 (5) ◽  
pp. 2505-2511
Author(s):  
Anastasia Khudorozhkova ◽  
Andrey Isakov ◽  
Alexey Apisarov ◽  
Alexander Redkin ◽  
Yurii Zaikov

2021 ◽  
Vol 19 (4) ◽  
pp. 38-46
Author(s):  
Manar S. Toman ◽  
Sameer Hassan Al-nesrawy

This paper presents the work conducted on preparing (PbO PVA-PEG) nanocomposites through adding the different weight concentrations of lead oxide (0,1,3,5,7 wt%). The structural aspects such as optical microscope, FTIR and electrical features of nanocomposites (PVA-CMC/PbO) were examined. The resulting data shows that the dielectric constant decreased along with the decline of dielectric loss, whereas the frequency value rose while applying of an electric field. As for the electrical conductivity AC, the dielectric loss and dielectric constant of all samples rose along with the increase in lead oxide concentration.


2019 ◽  
Vol 64 (2) ◽  
pp. 567-573 ◽  
Author(s):  
Alexey Rudenko ◽  
Andrey Isakov ◽  
Alexey Apisarov ◽  
Alexander Chernyshev ◽  
Olga Tkacheva ◽  
...  

2011 ◽  
Vol 396-398 ◽  
pp. 786-790 ◽  
Author(s):  
Ke Wu Peng ◽  
Peng Zhang ◽  
Jian Guo Xie ◽  
He Li Ma

Liquidus temperature, electrical conductivity and phase composition of Al2O3-CaO-SiO2-CaF2 System were studied. The results showed that the liquidus temperature of the slag decreased with increasing CaF2 content, and its electrical conductivity increased with increasing CaF2 content and temperature. When the content of CaF2 is 20%, the liquidus temperature is 1469°C. When the contents of CaF2 is 10%,its main phase compositions are composed of Ca5Al6O14、Al2Ca3(SiO4)3、Al2(SiF6)3 and Ca3Al10O18. Ca2AlF7、Ca2Al3O6F becomes more and more with increasing the content CaF2 because of F1- replacing O2- in molten slag.


2021 ◽  
Vol 2021 (2) ◽  
pp. 196-202
Author(s):  
A. V. Rudenko ◽  
A. P. Apisarov ◽  
A. V. Isakov ◽  
O. V. Grishenkova ◽  
Yu. P. Zaikov

Author(s):  
Liliana I. Duarte ◽  
Christian Leinenbach ◽  
Jiang Wang ◽  
Yuriy Plevachuk ◽  
Vasyl Sklyarchuk ◽  
...  

2014 ◽  
Vol 513-517 ◽  
pp. 24-27 ◽  
Author(s):  
Jia Meng Guo ◽  
Ke Wu Peng ◽  
Lei Yi ◽  
He Li Ma ◽  
Ren Chen

Liquidus temperature, electrical conductivity and phase composition of Al2O3-CaO-SiO2-CaF2-MgO slag system were studied. The results showed that the liquidus temperature of the slag decreased with increasing MgO content, and its electrical conductivity increased with increasing MgO content and temperature. When the content of MgO is 5 %, the main phase compositions of the slag are composed of MgAl2O4, Ca2SiO2F2, CaAl4O7 and Ca5Al6O14. When the content of MgO is 7 %, the main phase compositions of Al2O3-CaO-SiO2-CaF2-MgO are composed of MgAl2O4, Ca4Si2O7F2, CaAl4O7 and Ca5Al6O14.And the content of MgAl2O4 and Mg2SiO4 increased with increasing MgO.


Author(s):  
Abdulameer Khalaf Arat

In the present work, nanocomposites of polyvinyl pyrrolidone (PVP), carboxymethyl cellu- lose (CMC) and lead oxide nanoparticles (PbO2) have been prepared to use for gamma ray shielding applications. The nanocomposites have been prepared by casting technique. The lead oxide nanoparticles were added to the mixture of (PVP 55 wt.% and CMC 45 wt.%) with different concentrations are (0,1.5,3 and 4.5) wt.%. The D.C electrical conductivity and optical properties of nanocomposites were studied. The experimental results showed that the D.C electrical conductivity increases with increase the lead oxide nanoparticles concentrations. The absorbance and optical constants increase with the increase of PbO2 concentrations but the energy band gap decreases with the increase of PbO2 concentrations. The results of (polyvinyl pyrrolidone, carboxymethyl cellulose and lead oxide nanoparticles) nanocomposites application for gamma ray shielding showed that the (PVP-CMC-PbO2) nanocomposite have high linear attenuation coefficients for Cs-137 gamma ray sources.


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