نتایج جستجو برای: p2o5 sio2
تعداد نتایج: 14894 فیلتر نتایج به سال:
Bioactive glass with composition SiO2, Na2O, CaO, P2O5 with MgO additive were synthesized through a quick alkali mediated sol–gel method. MgO was substituted for SiO2 in glass formula up to 5 wt% and in-vitro bioactivity of the samples (precipitation behavior of carbonated apatite likely bone layer) was evaluated by soaking them in simulated body fluid (SBF). The characterizations were carried ...
For comprehensive understanding and control of the properties CaO–MgO–SiO2–FexO–P2O5 slags, thorough investigation surface tension-structure relationship is required. In this study, structural behaviors components were analyzed by Raman spectroscopy, transformation mechanism tension as a function composition was clarified. The results showed that with CaO/SiO2 increasing from 0.5 to 2.0, O2– re...
AbstractBioactive glass with frame of SiO2-CaO-P2O5-ZnO-MgO-SrO was prepared using quick alkali mediated sol-gel process. The functional group analysis, morphology, composition and phase analysis of this glass were done by using FTIR, FESEM, EDX and XRD respectively. The bioactive nature of the sample was analyzed by immersion in Phosphate Buffer Saline (PBS) for a period of 7 days and characte...
Biocompatibility of a new bioactive glass composition for medical applications was evaluated with the addition of fluorides, such as CaF2 and MgF2, for the substitution of Na2O in the conventional bioactive glass composition (SiO2-CaO-Na2O-P2O5). Also, the physical properties of these glass ceramics were investigated. When B2O3 was added as a Na2O substitution, the thermal expansion coefficient...
Amorphous catalytic materials belonging to the Nb 2 O 5 –P –SiO system were prepared through an original sustainable sol-gel procedure, and characterized by surface area, porosity acidity measurements. Their acid properties have been investigated FT-IR spectroscopy of adsorbed pyridine, ammonia titration TPR, as well with 2-phenylethylamine from organic solution. They present Lewis attributed n...
Sustainable glasses were prepared by green technology including the use of different wastes as raw materials and concentrated solar power (CSP) renewable energy. The used to formulate animal bone flour ash, which presents high contents CaO, P2O5 alkaline oxides; glassy sand from waste packaging glass submitted a primary treatment, composed principally SiO2; potassium carbonate reagent grade. Di...
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