Quenching Glass Ceramic

The thermal quenching of fluorescence of ce y 3 al 5 o 12 glass ceramic yag gc phosphor was evaluated and compared with those of ce y 3 al 5 o 12 polycrystal yag pc and ce gd y 3 al 5 o 12 glass ceramic gdyag.

Quenching glass ceramic. Monazite iron phosphate glass ceramic wasteforms were prepared by a melt quenching process. Quenching effect will be there on both physical and structural properties. Glass ceramics with nanocrystals present a transparency higher than that expected from the theory of rayleigh scattering. The feasibility to immobilize the hlw by monazite iron phosphate glass ceramics is discussed.

The glass reagents high purity powders of sio 2 ca 3 po 4 2 caco 3 mgco 3 4 mg oh 2 5h 2 o na 2 co 3 and k 2 co 3 1. Glass ceramic materials share many properties with both glasses and ceramics glass ceramics have an amorphous phase and one or more crystalline phases and are produced by a so called controlled crystallization in contrast to a spontaneous crystallization which is usually not wanted in. For different concentrations the emission spectra and decay curves of the 4i13 2 4i15 2 emission were measured. Summary this paper presents the results of an experimental study of heat transfer characteristics in single phase and two phase stagnation point flows pertinent to quenching of glass in the temperi.

In this paper phosphate based glass ceramic waste forms containing monazite cepo 4 as crystalline phase were prepared by a melt quenching process using nh 4 h 2 po 4 h 3 bo 3 fe 2 o 3 and ceo 2 as the feed materials and the formation process was analyzed. This ultratransparency is attributed to the spatial correlation of the nanoparticles. Do micro structural properties after different rate of quenching simultaneously measure the physical properties also.

The glass referenced as cel2 was prepared by a traditional melting quenching process. Ce la nd po 4 phosphate based glass ceramics are potential candidates for the hlw. Glass ceramics are polycrystalline materials produced through controlled crystallization of base glass.