نتایج جستجو برای: borosilicate glasses
تعداد نتایج: 15403 فیلتر نتایج به سال:
It is well known that silver nanoparticles have been used for centuries as a yellow tint for glasses, which made the silver a revolutionary colorant used to paint the windows of the religious places. An ion exchange non-conventional process comely called medieval pigment without using molten salts has long been used as a method for coloring the glass. In the same subject, this work aims to stud...
Borosilicate BK7 glasses doped with different amounts of CeO2 (0.5,1,1.5%) were prepared by the convenient melting process in this work. DTA analysis proved that 0.5-1% CeO2 has a network modifier role and then up to 1.5% it shows network former role.For structural studies, FT-IR and Raman spectroscopy were carried out. Fermi energy level, direct/ indirect optical band gap and Urbach energy wer...
The immobilization of technetium-99 ((99)Tc) in a suitable host matrix has proven to be a challenging task for researchers in the nuclear waste community around the world. In this context, the present work reports on the solubility and retention of rhenium, a nonradioactive surrogate for (99)Tc, in a sodium borosilicate glass. Glasses containing target Re concentrations from 0 to 10,000 ppm [by...
The goal of this project was to develop low-firing thick-film materials systems for the fabrication of piezoresistive sensors on special steels, for the fabrication of instrumented medical devices. To this end, a series of individual thick-film materials and complete systems, based on lead borosilicate glasses, were developed and extensively characterised. These studies allowed us to formulate ...
This document is the progress report of the JRC programme Safety of Nuclear Materials for the period July-December 1981. On the basis of the Council decision on the JRC plan 1980-1983, the activity on radioactive waste management which is carried out in the framework of the programme Safety of Nuclear Materials, has been organized into 4 projects: Risk Evaluation Protective Barriers Actinide Se...
Gamma irradiation-induced defects at doses of 0.5 and 5 MGy were studied in lithium sodium-borosilicate (LiNaBSi) sodium barium-borosilicate (NaBaBSi) glasses, used for high-level radioactive waste immobilisation the UK India, respectively. X-band electron paramagnetic resonance (EPR), Raman UV-Vis-nIR spectroscopies to characterise glasses before after irradiation. EPR absorption revealed form...
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