Please enable JavaScript.
Coggle requires JavaScript to display documents.
Ceramic A solid crystal or compound between metallic an non-metallic…
Ceramic
A solid crystal or compound between metallic an non-metallic elements
Properties
High hardness
Brittle
Low ductility
Low toughness
Good thermal and electric resistance
High melting temperature
High chemical stability
Contain porosities
Application
Traditional ceramics
Brick
Stone
Advanced ceramics
Glass
Soda Lime Glass
Glass ceramics
Silica glass
Technical
Alumina
Alumina Nitride
Boron Carbide
Silicon
Silicon Carbide
Silicon Nitride
Tungsten Carbide
Honeycomb ceramic
Classification of Ceramic bases of application
Glasses
Glasses
Noncrystalline silicates containing other oxides, that influence the properties of glass.
Application
Containers, windows, lenses and fiberglass
Properties
Thermal shock resistance
Chemically resistance
Very low coefficient of expansion
Glass-ceramics
Nucleating agent (TiO2) must be added to induce the crystallization/devitrification process.
Application
Ovenware, Tableware, Electrical insulators
Properties
High mechanical strengths
Thermal conductivities
Low coefficient of thermal expansion
Easily fabricated
Clay products
Whitewares
Application
Pottery
Tableware
Sanitaryware
Porcelain
Structural clay product
Application
Tiles
Brick
Basic process
2) Shaping
1) Clay + water
3) Drying
4) Firing
Refractories
Properties
Can withstand high temperatures without melting or decomposing
Can provide thermal insulation
Remain unreactive or inert when exposed to sever temperature
Application
Glass manufacturing
Power generation
Furnace lining for metal refining
Fireclay
Alumina + Silica
Can be used up to 1500°C
Application in furnace-construction
To confine hot atoms
To thermally insulated structural members from excessive temperature
Silica
Can be used up to 1650°C
Application used in the arced roofs of metals - and glass making furnaces
Contains silica
Basic
Magnesia + Ca, Cr, Fe
Application used in some glass-making open hearth furnaces
Special
Relatively high-purity oxide material
e.g: Alumina, Silica, Magnesia, Silicon Carbide
More expensive
Adhesive
Used to wear, grind and cut out other material, that necessarily is softer
Properties
High Hardness
High degree of toughness
High wear resistance
High thermal resistance
Form of abrasive
Loose
e.g: Diamond, corundum and silicon carbide
Coated
e.g: Sandpaper
Elements
e.g: Diamonds, Tungsten Carbide, Sandpaper, Corundum
Cements
When mixed with water, they form a paste that subsequently sets and hardens
e.g. : cement, plaster of Paris (POP) and lime
The mixing or bonding can be done at room temperature
Water actually participates in a chemical bonding reaction
Advanced Ceramics
To increase or enhance the properties of traditional ceramics
Piezoelectric
Microelectro-mechanical systems
Optical Fibers
Ceramic Ball Bearings
Batching & Preparation of Powders
Forming
Drying
Firing
Raw materials: Powder
Dry Pressing
Raw materials: Plastic mass
Extrusion
Injection Molding
Raw materials: Slurry
Slip Casting
Tape Casting
Fabrication & Processing of Ceramics