Transparent Glass Ceramics Based On Zno Crystals

Pinckney reported the first zno precipitated tgc based on a parent glass of sio 2 al 2 o 3 zno k 2 o.

Transparent glass ceramics based on zno crystals.

Download citation transparent glass ceramics based on zno crystals glass ceramics based on hexagonal zno crystals can be obtained in the sio2 al2o3 zno k2o system. Nano sized zno crystals could precipitate in quenched glass ahead of heat treatment when x 40 in 44sio 2 11al 2 o 3 x zno 10k 2 o mol i e with a particular precursor composition 41 9sio 2 10 5al 2 o 3 38 1zno 9 5k 2 o mol after normalization. The glass must be melted at temperatures over 1600 c and crystallization occurred at temperatures between 650 and 1100 c. 38 45 47 at elevated temperatures a disordered and then ordered pyrochlore type structure is.

Transparent glass ceramics gcs based on co2 zno nanocrystals mean diameter 11 nm are synthesized on the basis of cobalt doped glasses of the k2o zno al2o3 sio2 system. At 860 c traces of eu oxyapatite appeared in addition to zno nanocrystals. The average crystal size obtained from the x ray diffraction data was found to range between 14 and 35 nm. Transparent glass ceramics based on nano sized crystals of re titanates and titanates zirconates.

When las or mas glasses nucleated by tio 2 or zro 2 are doped with re ions re 2 ti zr 2 o 7 crystals with the defect fluorite structure precipitate. Transparent cordierite based glass ceramics with high crystallinity were prepared by the controlled crystallization of parent glass with different zno additions. Transparent glass and glass ceramics containing zno nanocrystals were successfully synthesized through melt quenching method. As the b 2 o 3 is replaced by zno gradually the glass transition temperature changed slightly while the onset crystallization temperature and the crystallization peak temperatures shifted to lower values.

The materials can be highly transparent with zno crystal sizes on the order of 5 20 nm dispersed uniformly throughout an alkali aluminosilicate glass. Controlling the crystallization condition can allow the formation of highly transparent zno doped gcs. The materials can be.