Ceramics and Hard, Brittle Materials
 
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Ceramics & Hard, Brittle Materials

Ceramic materials are inorganic, non-metallic materials made from compounds of a metal and a non-metal. Ceramics may be crystalline or non-crystalline and are strong, stiff, brittle, chemically inert and do not conduct heat or electricity but properties vary widely.

Ceramics are strong in compression and weak in shearing and tension which make them challenging to saw, grind, lap and polish. Crystalline ceramics are made by using various forming processes whereas non-crystalline ceramics, which are glasses, tend to be formed from melts. Both types of ceramics require diamond tooling for machining and diamond slurries for polishing and finishing. Some examples of ceramic types and applications:

Ceramic Type Application
Barium Titanate Data Storage Elements
Bismuth Strontium Calcium Copper Oxide High Temperature Superconductor
Boron Oxide Body Armor
Boron Nitride Lubricant or Abrasive (based on crystal type)
Earthenware Plates & Mugs
Ferrite Transformers (Magnetic Cores)
Lead Zirconate Titanate (PZT) Ultrasonic Transducer
Magnesium Diboride (MgB2) Superconductor
Porcelain Household Products
Sialon (Silicon Aluminum Oxynitride) Chemical Industry (non-ferrous molten metal handling)
Silicon Carbide (SiC) Abrasive, refractory material, susceptor in microwave furnace
Silicon Nitride (Si3N4) Abrasive
Steatite (Mg Silicates) Electrical Insulator
Titanium Carbide (TiC) Scratchproof Watches/Heat Shield for Shuttle Re-entry
Uranium Oxide (UO2) Nuclear Reactor Fuel
Yttrium Barium Copper Oxide (YBa2Cu3O7-x) High Temperature Superconductor
Zinc Oxide (ZnO) Semiconductor/Varistor
Zirconium Dioxide (ZnO2) Automotive Oxygen Sensor & Fuel Cells
Partially Satbilized Zirconia (PSZ) Less Brittle Ceramic — Bearings & Components in severe abrasive environments

Applications

Ceramics & Hard Brittle Materials Engineers, R&D and Production Staff are encouraged to contact Chemetall Precision Microchemicals for detailed information.

Literature

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