Quenching Glass Ceramic

Ce la nd po 4 phosphate based glass ceramics are potential candidates for the hlw.

Quenching glass ceramic.

The er concentration dependence of integrated intensity and lifetime of 4i13 2 4i15 2 emission are showed. Do micro structural properties after different rate of quenching simultaneously measure the physical properties also. 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. The glass referenced as cel2 was prepared by a traditional melting quenching process.

With the increase of the er3 doping. Glass ceramics are polycrystalline materials produced through controlled crystallization of base glass. In this work we have studied the concentration quenching in transparent glass ceramics containing er3 nayf4 nanocrystals. Quenching effect will be there on both physical and structural properties.

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. This ultratransparency is attributed to the spatial correlation of the nanoparticles. 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.

Monazite iron phosphate glass ceramic wasteforms were prepared by a melt quenching process. For different concentrations the emission spectra and decay curves of the 4i13 2 4i15 2 emission were measured. Glass ceramics with nanocrystals present a transparency higher than that expected from the theory of rayleigh scattering.