Structure property relations in multicomponent oxide systems with additions of TiO2 and ZrO2 for glaze applications

Abstract

The influence of the additives (10 weight% rutile, anatase and zirconia) on the atomic scale structure and microstructure of a base glaze (60 wt% feldspar, 15 wt% quartz, 8 wt% kaolin, 12 wt% dolomite and 5 wt% zinc oxide) are investigated. The morphology and structure of the glazes were determined by Scanning Electron Microscopy, X-ray diffraction, infra-red spectroscopy, as well as 27 Al and 29 Si magic angle spinning (MAS) NMR. Microscopy and X-ray diffraction revealed that the opacity was caused by crystals formed during thermal treatment. Although there are clearly crystalline phases present NMR shows that the heat treated glazes are dominated by the glassy component meaning the opacity is largely conveyed by the added oxide. The relationship between composition, structure and thermal expansion coefficient of the glazes is examined.

Performance of Rutile as an Antibacterial Material in Ceramic Tiles

“…The framework and rigidity of such glasses is provided by oxygen that are bonded to two network formers which are called bridging oxygen (BO). Network modifier oxides break apart this structure through the formation of non-bridging oxygen (NBO), which are bonded to only one network former leaving network modifiers to balance the remaining valence charge of the NBO [7].…”

Synthesis of MgO-ZrO2 Mixed Nanoparticles via Different Precursors: Identification of their Destructive Action for Organic Pollutants

“…Nanooxides play an important role in applied chemistry due to their vast applications such as semiconductors [1], biodiesel applications [2], catalytic application [3,4], biological applications [5], glaze applications [6], purification of oils [7] and photocatalytic degradation of organic pollutants [8][9][10][11][12]. Though many sorbents were tried for the decontamination of CWA's; viz activated carbon [13,14] or polymer [15,16], but the use of mixed metal oxide nanoparticles showed more satisfactory results [17,18] due to their high surface area, crystallinity, different morphologies and easily separation of electron hole pairs which are necessary for generating free radicals which decompose these organic pollutants [19].…”

Study of crystallization process of soda lead silicate glasses by thermal and spectroscopic methods

“…Many authors have intensively studied the crystallization process of glasses to apply the results in industrial processes [1][2][3][4][5][6][7][8][9][10][11][12]. The properties of glass-ceramics are determined by the crystallization phases precipitated from the glasses and their microstructures, which depended on composition of the parent glasses as well as thermal treatment [13][14][15][16].…”