نتایج جستجو برای: modified silicate ceramics

تعداد نتایج: 275616  

Journal: :Coatings 2021

Improving the bond strength of veneering ceramics to ZrO2-based cores remains a challenge. The purpose this study was evaluate shear different ZrO2 containing calcium silicate (CaSi) ceramics. Five types (n = 230) were divided into two groups: with or without oxygen plasma treatment. These bound (IPS e.max Ceram VITA VM9). Shear various measured 10), in addition phase composition, surface morph...

Journal: :Brazilian oral research 2016
Ana Lívia Gomes-Cornélio Elisandra Márcia Rodrigues Leticia Boldrin Mestieri Thaís de Oliveira Rodrigues Sanzovo Falcoski Christiane Pienna Soares Juliane Maria Guerreiro-Tanomaru Carlos Rossa Mário Tanomaru

Several calcium silicate-based biomaterials have been developed in recent years, in addition to Mineral Trioxide Aggregate (MTA). The aim of this study was to evaluate the cytotoxicity, genotoxicity and apoptosis/necrosis in human osteoblast cells (SAOS-2) of pure calcium silicate-based cements (CSC) and modified formulations: modified calcium silicate-based cements (CSCM) and three resin-based...

2009
Jing Shen Zhanqian Song Xueren Qian Wenxia Liu

In order to improve the acid-resistant property of papermaking grade precipitated calcium carbonate filler and to obtain modified filler in powder form, sodium silicate/zinc chloride based modifiers were used in filler modification, and the use of modified filler in papermaking of deinked pulp derived from recycled newspaper was also preliminarily investigated. Under the preliminarily optimized...

Journal: :Advanced Functional Materials 2023

Y3Al5O12 (YAG) is a widely used phosphor host. Its optical properties are controlled by chemical substitution at its YO8 or AlO6/AlO4 sublattices, with emission wavelengths defined rare-earth and transition-metal dopants that have been explored extensively. Nonstoichiometric compositions Y3+xAl5-xO12 (x ≠ 0) may offer route to new distributing over two more sublattices simultaneously, producing...

2011
Li JIN

Lead zirconate titanate (Pb(Zr1−xTix)O3 or PZT) ferroelectric ceramics have been widely used in transducers, actuators, and sensors, since they posses high dielectric and piezoelectric properties with a relatively high temperature of operation. Commercially used PZT ceramics are always modified by different dopants and are divided into the “soft” (donor doped) and “hard” (acceptor doped) groups...

2016

In this paper, Zn2SiO4:xEu3+ phosphors were synthesized with different concentrations of Eu3+ ions (x = 1, 3 and 5 wt.%) by using waste bottle glasses as silicate source. The structure, morphology, and luminescent properties of the phosphors were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and photoluminescence (PL) spectroscopy. The XRD ana...

2007
Antonio Tilocca

Ab initio Car-Parrinello molecular dynamics simulations were carried out to investigate the melt precursor of a modified phosphosilicate glass with bioactive properties, and to quench the melt to the vitreous state. The properties of the 3000 K liquid were extensively compared with those of the final glass structure. The melt is characterized by a significant fraction of structural defects smal...

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