ceramics
Transcript: advanced ceramics hardness advanced industrial materials that, by virtue of their poor electrical conductivity, are useful in the production of electrical storage or generating devices. filler, lending strength to the shaped body before and during firing Optical ceramics are developed for use in optical applications Optical materials derive their utility from their response to infrared, optical, and ultraviolet light. density .Ceramic magnets are easy to magnetize. very resistant to corrosion .do not need extra coatings for corrosion protection .resistant to demagnetization by outside fields. .stronger than natural magnets, though many other types of magnet are stronger than them. .relatively inexpensive advanced ceramics are developed over years to suite particular needs that could not be met with traditional ceramics or metals. ceramics Filler advanced industrial materials that, owing to modifications in their structure, serve as electrical conductors permanent magnet, transformer, telecommunications, and information recording applications traditional ceramics Magnetic ceramics strength from the Greece word keramicos meaning burnt stuff Defined as an inorganic, non-metallic solid prepared by the action of heat and subsequent cooling. ceramic products intended for use in building construction. Silica/flint/quartz /sand traditional ceramics night vision ? wastes can be processed with other ceramics into a synthetic rock, or synroc, or they can be mixed with cement powder to make hardened cements steel Nuclear ceramics Capacitor dielectric, piezoelectric ceramics fluxing agent, lowering the melting temperatures of the mixture Vitrification, or encapsulating nuclear waste in glass is possible method of containing nuclear wastes. Tribological (wear resistant ) ceramics advanced ceramic materials that are made into components for automobiles. WHY missile radomes, IR domes, sensor protection Conductive ceramics broad class of ceramic products that are white to off-white in appearance and frequently contain a significant vitreous, or glassy, component. Automotive ceramics Most ceramic capacitor dielectrics are made of barium titanate ceramic materials that are resistant to friction and wear alumina, silicon carbide ,transformation-toughened zirconia are some tribological ceramic plastic component, giving shaping abilities to the unfired product and also serving as a glass former during firing ceramic materials employed in the generation of nuclear power and in the disposal of radioactive nuclear wastes. Plastic component “an inorganic, nonmetallic (ceramic), basically crystalline material of rigorously controlled composition and manufactured with detailed regulation from highly refined and/or characterized raw materials giving precisely specified attributes.” max. use temperature feldspar Clay/kaolin substances and processes used in the development and manufacture of ceramic materials that exhibit special properties. Synroc ceramic products or components employed in medical and dental applications, mainly as implants and replacements. Fluxing agent owing to their insulating qualities, are useful in the production of electronic components the dominant material is alumina (aluminum oxide, Al2O3). Bioceramics electronic substrate and package ceramics oxide materials that exhibit a certain type of permanent magnetization called ferrimagnetism. advanced ceramics Ceramic Resonators Optical ceramics GENERAL PROPERTIES OF CERAMICS hard wear-resistant brittle resistant to thermal shock electrical insulators non-magnetic oxidation resistant chemically inert Abrasives Sharp, hard material used to wear away the surface of softer, less resistant materials Structural clay products load-bearing strength resistance to wear resistance to chemical attack White wares imperviousness to fluids low conductivity of electricity chemical inertness ability to be formed into complex shapes Refractory maintains its structural properties at very high temperatures clay based refractories non-clay based refractories bonded using techniques reserved for advanced ceramic materials processed in a manner similar to other traditional ceramics resistant to thermal shock. chemical inertness abrasion resistance