ISO 20507:2003 pdf download

ISO 20507:2003 pdf download.Fine ceramics (advanced ceramics,advanced technical ceramics)一Vocabulary.
NOTE 2 This term includes ceramics for passive electrical applications, i.e. ceramics with no active electrical behaviour, having a high electrical resistivity, used for electrical insulation functions.
NOTE 3 This term may apply to silicate ceramics such as steatite and electrical porcelain.
2.1.12
ceramic for electronic applications
electronic ceramic (deprecated)
fine ceramic used in electrical and electronic engineering because of intrinsic, electrically related properties
2.1.13
ceramic for nuclear applications
nuclear ceramic (deprecated)
fine ceramic having specific material properties required for use in the generation of nuclear energy
NOTE Ceramics for nuclear applications include materials for nuclear fuels, neutron absorbers, burnable neutron poisons, diffusion barrier coatings and inert container elements.
2.1.14
ceramic for optical applications optical ceramic
fine ceramic used in optical applications because of its intrinsic properties
NOTE I e.g., transparent alumina is used for high pressure sodium lamp envelopes.
NOTE 2 Optical ceramics are tailored to typically exploit transmission, reflection, absorption of visible and near-visible electromagnetic radiation.
2.1.15
ceramic heating resistor
heater making use of an electric conductive or a semiconductive property of ceramics
2.1.16
ceramic honeycomb
fine ceramic having many holes with a typically honeycomb shape
NOTE A ceramic honeycomb is typically used as a ceramic catalyst carrier, a filter or a heat exchanger regenerator, and is typically made of cordierite, mullite or aluminium titanate.
2.1.17
ceramic ionic conductor
electroceramic in which ions are transported by an electric potential or chemical gradient
2.1.18
ceramic matrix composite
CMC
fine ceramic composed of a ceramic matrix containing reinforcement
NOTE The reinforcement is often continuous, i.e. ceramic filaments, distributed in one or more spatial directions, but this term is also used for discontinuous reinforcement, e.g short ceramic fibres, ceramic whiskers, ceramic platelets or ceramic particles.
2.1.19
ceramic optical waveguide
optical waveguide formed on the surface of a ceramic substrate
NOTE Optical single crystal of LiNbO3 is typically used as a ceramic substrate.
ceramic sensor
sensor making use of semiconductive, magnetic or dielectric properties of a fine ceramic
2.1.21
ceramic substrate
ceramic body, sheet or layer of material on which some other active or useful material or component may be deposited or laid
NOTE e.g., an electronic circuit laid on an alumina ceramic sheet. In catalysis, the formed, porous, high surface-area carrier on which the catalytic agent is widely and thinly distributed for reasons of performance and economy.
2.1.22
ceramic varistor
ceramic material having high electrical resistivity at low voltage but high electrical conductivity at high voltage
NOTE A zinc oxide varistor can be used as a protector in an electronic circuit.
2.1.23
c erm et
composite material consisting of at least one distinct metallic and one distinct ceramic phase, the latter normally being present at a volume fraction greater than 50 %
NOTE I The ceramic phase, typically, has high hardness, high thermal strength, good corrosion resistance and the metallic phase has good toughness and elastoplastic behaviour.
NOTE 2 The term “cermet” is a contracted form of ceramic metal.
NOTE 3 Materials containing typically less than 50 % by volume of ceramic phase are commonly called “metal matrix composites”.
2.1.24
coated ceramic
ceramic coated by a layer or multi-layers of organic or inorganic material
2.1.25
continuous fibre ceramic composite
CFCC
ceramic matrix composite in which the reinforcing phase(s) consist(s) of continuous filaments, fibres, yarn or knitted or woven fabrics
2.1.26
diamond-like carbon
form of carbon made by a CVD process, having hardness much higher than ordinary carbon but lower than diamond
NOTE Diamond-like carbon is typically used as a hard coat material for cutting tools or memory disks.
2.1.27
dielectric ceramic ceramic dielectric
electroceramic having controlled dielectric properties
2.1.28
discontinuous fibre-reinforced ceramic composite
ceramic matrix composite material reinforced by chopped fibres.