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Glass (Types (Simple Component Glass (High Viscosity, High Dielectricity,…
Glass
Types
Glass Formers
Simple Component Glass
High Viscosity
High Dielectricity
Good Chemical Stability
Multicomponent Silicate Glass
Contains silicate formers, modifiers & intermediates
Network Modifiers: Lower Viscosity => Easier Shaping , Decrease Electrical Resistance, Increase CTE, Reduce Chemical Resistance
Ternary Glass
Components
1 Glass Former + 2 Network Modifiers
2 Glass Former + 1 Network Modifier
3 Glass Former
Glass Ceramics
Processing
Controlled crystallisation for certain compositions
Shape Forming : Conventional Glass
Properties
Fully Dense
Good Strength
Good Hardness
Type
Nanocrystal
Properties
High Toughness
High Elastic Modulus
High Chemical Resistance
Better Surface Quality
Pros
Easy Shaping
Good Quality
Reproducable
Applications
Electronics
Biomaterials
Solidification
Short-Range Order
Orderly
Predictable
Bond
Orientated
Covalent
Not Orientated
Ionic
Long-Range Order
Crystalline Structure
Long-Range Disorder
Glass, Amorphous Structure
Silicate Ceramics
Silica
Silica Glass
Clay
Formation
Low Nucleation Rate
High Viscosity near MP
No nucleus in structure
Chemical Structure
Bond
Covalent
Ionic
Metallic
VDW
H Bond
Building Block
Si-O Tetrahedron
SiO4
Properties
Inorganic Material