نتایج جستجو برای: sio2 ceramic

تعداد نتایج: 36870  

2015
Alexis Duchateau

In 1776 ceramic material was first suggested for a dental application by the French chemist Alexis Duchateau who worked in collaboration with the dentist Dubois de Chemant to produce the first complete denture. The material used was a mixture of potash feldspar (K2O.Al2O3.6SiO2, 70-80%), quartz (SiO2, 10-30%) and kaolin (Al2O3.Si02.2H2O, 0-3%) [1]. Since then the potential of the material was u...

2013
M. I. Martín F. Andreola L. Barbieri F. Bondioli I. Lancellotti J.Ma. Rincón M. Romero

This work presents the results of a study focused on the development of forsterite-nepheline glass-ceramic with the use of rice husk ash (RHA) as a silica source. The glass-ceramics were produced by a sintering process of a glassy frit formulated in the MgO-Al2O3-SiO2 base system with the addition of B2O3 and Na2O to facilitate the melting and pouring processes. The crystallisation study was ca...

2015
Fu Wang Zhiguo Chai Zaixi Deng Jing Gao Hui Wang Jihua Chen

The present study aimed to evaluate the influence of various heat-pressing procedures (different holding time and heat pressing temperature) on the microstructure and flexural strength of lithium disilicate glass ceramic. An experimental lithium silicate glass ceramic (ELDC) was prepared from the SiO2-Li2O-K2O-Al2O3-ZrO2-P2O5 system and heat-pressed following different procedures by varying tem...

2012
Chandra Sekhar

This is a review article covering literature reported on consolidation of ceramic components out of aq.-based Al2O3, MgAl2O4 spinel, β-Si4Al2O2N6, β-SiAlON-SiO2 composite, and zirconia toughened alumina (ZTA) slurries following hydrolysis induced aq. gelcasting (henceforth referred to as GCHAS) route. GCHAS is a combination of aq. gelcasting (GC) and hydrolysis assisted solidification (HAS) rou...

Journal: :Coatings 2023

As transparent heated films (THFs) based on conductive oxides (TCOs) are restricted by expensive raw materials and inappropriate fabricating film curved surfaces because of its brittleness, silver nanowires (AgWS-TCF) is an ideal alternative material for THF. However, there still many problems to be solved in the electrical thermal stability AgNWs-TCF. In this paper, Al-doped ZnO (AZO) nanopart...

 Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...

Journal: :Jurnal Penelitian Pendidikan IPA (JPPIPA) 2023

This study aims to analyze the effect of composition MgO-SiO2-AL2O3 on dielectric constant, hardness, and microstructure. Good ceramics can be produced from an alloy ceramic materials with a certain that is hard able store electric charge. Magnesium Oxide (MgO) ranked as most heat-resistant insulating material for application practice. Silica (SiO2) known its besides silica also reduce plastici...

Journal: :Nanoscale 2011
Liang Kou Chao Gao

We report a facile strategy to synthesize silica nanoparticles-coated graphene oxide (GO-SiO2) nanohybrids in a water-alcohol mixture at room temperature. AFM observations revealed that silica nanoparticles with ca. 50 nm in size were densely and evenly covered on graphene oxide sheets. Due to the space layer of silica nanoparticles, micro-scale GO-SiO2 hybrid plates could be individually dispe...

امیری, حمید, بیت اللهی, علی, میرکاظمی, سید محمد,

In this investigation, the effect of heat treatment on magnetic properties of glass and nano-structured cobalt-ferrite glass-ceramic was studied. The glass was synthesized in the system of Na2O-Fe2O3-CoO-B2O3-SiO2. Based on DTA results, heat treatment was done at different times and temperatures. X-ray diffraction pattern of glass-ceramic showed the crystallization of CoFe2O4 and some nonmagnet...

Journal: :Nano letters 2016
Dingchang Lin Wei Liu Yayuan Liu Hye Ryoung Lee Po-Chun Hsu Kai Liu Yi Cui

High ionic conductivity solid polymer electrolyte (SPE) has long been desired for the next generation high energy and safe rechargeable lithium batteries. Among all of the SPEs, composite polymer electrolyte (CPE) with ceramic fillers has garnered great interest due to the enhancement of ionic conductivity. However, the high degree of polymer crystallinity, agglomeration of ceramic fillers, and...

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