Synthesis and characterization of Rubidium substituted Leutice glass ceramics

Objectives: synthesis and replacement of rubidium ions with potassium ions to get a cubic stabilized leutice or a tetragonal leutice with enhanced mechanical properties in order to get a stronger glass ceramic than commercially available Empress glass for fabrication of prosthesis.
Methods: 1.Batching and melting of glass
2 Ball Milling
3 X-ray Diffraction
4 Differential Scanning Calorimetry
5 Study of crystallisation kinetics by making compact ceramics
6 Heat Treatment
7 Dilatometry specimen preparation
8 Scanning electron microscopy (SEM)

Results: 1. Differential Scanning Calirometry Results
2. Dilatometry Results
3. X-Ray diffraction Results
4. SEX Images of Experimental Glasses
5.

Conclusions: withithin the limitation of my studies the following conclusion were drawn for my project.
The series of glasses 1,2,3,4,5 and six were produced with change in potassium and rubidium ratio.
Glass with high Rubidium content 1 and 2 were unable to make glass ceramic due to crystallisation in those glasses occurred.
The experimental glass ceramics 3, 4,5 and six were prepared .In glass ceramics 3,4,5 and six major crystalline phase is tetragonal leucite. Glass ceramics 5 and six with low rubidium content show highly textured oriented glass ceramics and no microckracking was observed. Crystals with large aspect ratio are produced.
It is not clear whether Rubidium substituted potassium in the tetragonal phase so it needs further studies.