ASTM C1145-06
(Terminology)Standard Terminology of Advanced Ceramics
Standard Terminology of Advanced Ceramics
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Designation: C1145 − 06
StandardTerminology of
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Advanced Ceramics
This standard is issued under the fixed designation C1145; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope agglomerate, n—as used in fractography, a cluster of grains,
particles, platelets, or whiskers, or a combination thereof,
1.1 This terminology contains definitions and explanatory
present in a larger solid mass.
notes for the principal words, phrases, and terms used in
advanced ceramics technology. The given definitions are
aggregate, n—a dense mass of particles held together by
technology-specific and are directly applicable to the design,
strong intermolecular or atomic cohesive forces. It is stable
production, testing, analysis, characterization, and use of
to normal handling and ordinary mixing techniques includ-
advanced ceramics for structural, electronic, coating, energy,
ing high-speed stirring and ultrasonics.(C242)
chemical, nuclear, biomedical, and environmental applications.
back-face strain, n—the strain as meaured with a strain gage
1.2 The purpose of the standard terminology is to provide a
mounted longitudinally on the compressive surface of the
collected technical resource and reference that promotes a
specimen, opposite the crack or notch mouth (often this is
common understanding of the principal technical terms used
the top surface of the specimen as tested). (C1421)
within the advanced ceramics community and encourages the
use of uniform terminology in specifications and reports.
base exchange, n—a surface property exhibited by collodial
inorganic materials, usually clays, whereby absorbed surface
2. Referenced Documents
cations are replaced by other cations.
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2.1 ASTM Standards:
body, n—the structural portion of a ceramic article, or the
C242 Terminology of Ceramic Whitewares and Related
material or mixture from which it is made.(C242)
Products
C1259 Test Method for Dynamic Young’s Modulus, Shear
calcine, v (calcination, n)—firing or heating a granular or
Modulus, and Poisson’s Ratio for Advanced Ceramics by
particulate solid at less than fusion temperature, but suffi-
Impulse Excitation of Vibration
cient to remove most of its chemically combined volatile
C1368 Test Method for Determination of Slow Crack
matter (that is, H O, CO ) and otherwise to develop the
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Growth Parameters of Advanced Ceramics by Constant
desired properties for use.
Stress-Rate Strength Testing at Ambient Temperature
C1421 Test Methods for Determination of Fracture Tough-
capillary action, n—the phenomenon of intrusion of a liquid
ness of Advanced Ceramics at Ambient Temperature
into interconnected small voids, pores, and channels in a
solid, resulting from surface tension.
3. Terminology
casting, drain (hollow casting), v—forming ceramic ware by
absorbed moisture, n—water held within the materials and
introducing a body slip into an open, porous mold, and then
having physical properties not substantially different from
draining off the remaining slip when the cast piece has
ordinary water at the same temperature and pressure.
reached the desired thickness. (C242)
advanced ceramic, n—ahighlyengineered,highperformance,
cermet, n—a composite material or article comprised of a
predominately non-metallic, inorganic, ceramic material
ceramic and a metal or metal alloy, interdistributed in any of
having specific functional attributes.
various geometrical forms but intimately bonded together.
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This terminology is under the jurisdiction of ASTM Committee C28 on
chatter, n—an undesirable pattern created on the surface of a
Advanced Ceramics and is the direct responsibility of Subcommittee C28.91 on
work piece, usually at regularly spaced intervals, due to an
Nomenclature and Editorial.
Current edition approved Jan. 1, 2006. Published January 2006. Originally
out-of-round, out-of-balance condition or due to an induced
approved in 1989. Last previous edition approved in 2005 as C1145–05. DOI:
natural frequency, or its harmonics, or both, in a grinding
10.1520/C1145-06.
machine.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
colloidal particle, n—a dispersed particle with a linear dimen-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sion of 5 to 100 nm.
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C1145 − 06
comminution, n—the act or process of reduction in pa
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