Search results for "Field emission gun"

showing 2 items of 2 documents

Physicochemical parameters - hydration performance relationship of the new endodontic cement MTA Repair HP

2019

Background To characterize the chemical composition and textural parameters of the MTA Repair HP precursor powder and their influence to hydration performance. Material and methods Un-hydrated precursor material was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray fluorescence (XRF), laser diffraction (LD), N2 physisorption and field emission gun scanning electron microscopy (FEG-SEM). Setting time was assessed according to ASTM specification C 266. Hydrated material was analysed by XRD, FT-IR, energy dispersive X-ray (EDX) analysis and FEG-SEM. Results Ca3SiO5 and Ca2SiO4, in addition to CaWO4 as radiopacifier are the main compositional phase…

CementMaterials scienceScanning electron microscopeResearchchemistry.chemical_elementNanoparticle030206 dentistry02 engineering and technology:CIENCIAS MÉDICAS [UNESCO]021001 nanoscience & nanotechnologyOperative Dentistry and Endodontics03 medical and health sciences0302 clinical medicinechemistryPhysisorptionChemical engineeringAluminiumSpecific surface areaUNESCO::CIENCIAS MÉDICASFourier transform infrared spectroscopy0210 nano-technologyField emission gunGeneral DentistryJournal of Clinical and Experimental Dentistry
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Growth of tin oxide thin films composed of nanoparticles on hydrophilic and hydrophobic glass substrates by spray pyrolysis technique

2015

Abstract In this paper, we have demonstrated the growth of tin oxide (SnO 2 ) thin films composed of nanoparticles on hydrophobic (siliconized) and hydrophilic (non-siliconized) glass substrates by using the spray pyrolysis technique. X-ray diffraction (XRD) analysis confirmed the formation of SnO 2 thin films with tetragonal rutile-phase structure. Average particle size of nanoparticles was determined to be in the range of 3–4 nm measured from the front view images obtained by a field emission gun scanning electron microscope (FESEM), while the size of nanoparticle clusters, when present, were in the range of 11–20 nm. Surface morphology of SnO 2 films grown over hydrophobic substrates rev…

PhotoluminescenceMaterials scienceBand gapScanning electron microscopeAnalytical chemistryGeneral Physics and AstronomyNanoparticleSurfaces and InterfacesGeneral ChemistryCondensed Matter PhysicsTin oxideSurfaces Coatings and FilmsParticle sizeThin filmField emission gunApplied Surface Science
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