ASTM C1145-01
(Terminology)Standard Terminology of Advanced Ceramics
Standard Terminology of Advanced Ceramics
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1145 – 01
Standard Terminology of
1
Advanced Ceramics
This standard is issued under the fixed designation C 1145; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
absorbed moisture, n—water held within the materials and out-of-round, out-of-balance condition or due to an induced
having physical properties not substantially different from natural frequency, or its harmonics, or both, in a grinding
ordinary water at the same temperature and pressure. machine.
advanced ceramic, n—a highly engineered, high perfor- colloidal particle, n—a dispersed particle with a linear dimen-
mance, predominately non-metallic, inorganic, ceramic ma- sion of 5 to 100 nm.
terial having specific functional attributes. comminution, n—the act or process of reduction in particle
agglomerate, n— as used in fractography, a cluster of grains, size, usually but not necessarily by grinding or milling.
particles, platelets, or whiskers, or a combination thereof, compositional inhomogeneity, n—as used in fractography, a
present in a larger solid mass. microstructural irregularity related to the nonuniform distri-
aggregate, n—a dense mass of particles held together by bution of an additive, a different crystalline or glass phase or
strong intermolecular or atomic cohesive forces. It is stable in a multiphase material the nonuniform distribution of a
to normal handling and ordinary mixing techniques includ- second phase.
ing high-speed stirring and ultrasonics.(C-21, C242) continuous fiber ceramic composite (CFCC), n—a ceramic
back-face strain, n—the strain as meaured with a strain gage matrix composite in which the reinforcing phase(s) consists
mounted longitudinally on the compressive surface of the of continuous filaments, fibers, yarn, or knitted or woven
specimen, opposite the crack or notch mouth (often this is fabrics.
the top surface of the specimen as tested). (C 1421) crack, n—as used in fractography, a plane of fracture without
base exchange, n—a surface property exhibited by collodial complete separation.
inorganic materials, usually clays, whereby absorbed surface crack deflection, n—a toughening mechanism in advanced
cations are replaced by other cations. ceramics or ceramic matrix composites characterized by
body, n—the structural portion of a ceramic article, or the fracture surface roughening and crack tilting/twisting during
material or mixture from which it is made.(C-21, C 242) propagation around grains or a reinforcing component
calcine, v (calcination, n)—firing or heating a granular or caused by stress fields around the grains or component
particulate solid at less than fusion temperature, but suffi- developed through mismatches in thermal expansion or
cient to remove most of its chemically combined volatile mechanical properties (such as elastic modulus), or both,
matter (that is, H O, CO ) and otherwise to develop the between grains or between reinforcement and matrix.
2 2
desired properties for use. crack orientation, n—a description of the plane and direction
capillary action, n—the phenomenon of intrusion of a liquid of a fracture in relation to a characteristic direction of the
into interconnected small voids, pores, and channels in a product. This identification is designated by a letter or letters
solid, resulting from surface tension. indicating the plane and direction of crack extension. The
casting, drain (hollow casting), v—forming ceramic ware by letter or letters represent the direction normal to the crack
introducing a body slip into an open, porous mold, and then plane and the direction of crack propagation. (C 1421)
draining off the remaining slip when the cast piece has deairing, n—the process of removing entrapped air or ab-
reached the desired thickness.(C-21, C 242) sorbed air from a mass or slurry, usually by application of a
cermet, n—a composite material or article comprised of a vacuum.
ceramic and a metal or metal alloy, interdistributed in any of depth of penetration, n—(1) the distance a penetrant has
various geometrical forms but intimately bonded together. entered into a solid material as measured from the surface of
chatter, n—an undesirable pattern created on the surface of a the material; (2) the maximum depth at which a magnetic or
work piece, usually at regularly spaced intervals, due to an ultrasonic indication can be measured in a test specimen.
diamond paste, n—diamond dust dispersed in a paste or slurry
1
for use as a grinding or polishing compound.
This terminology is under the jurisdiction of ASTM Committee C28 on
Advanced Ceramics and is the direct responsib
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.