1、Designation: C1145 06 (Reapproved 2013)Standard Terminology ofAdvanced Ceramics1This standard is issued under the fixed designation C1145; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in paren
2、theses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This terminology contains definitions and explanatorynotes for the principal words, phrases, and terms used inadvanced ceramics technology. The given
3、definitions aretechnology-specific and are directly applicable to the design,production, testing, analysis, characterization, and use ofadvanced ceramics for structural, electronic, coating, energy,chemical, nuclear, biomedical, and environmental applications.1.2 The purpose of the standard terminol
4、ogy is to provide acollected technical resource and reference that promotes acommon understanding of the principal technical terms usedwithin the advanced ceramics community and encourages theuse of uniform terminology in specifications and reports.2. Referenced Documents2.1 ASTM Standards:2C242 Ter
5、minology of Ceramic Whitewares and RelatedProductsC1259 Test Method for Dynamic Youngs Modulus, ShearModulus, and Poissons Ratio for Advanced Ceramics byImpulse Excitation of VibrationC1368 Test Method for Determination of Slow CrackGrowth Parameters of Advanced Ceramics by ConstantStress-Rate Stren
6、gth Testing at Ambient TemperatureC1421 Test Methods for Determination of Fracture Tough-ness of Advanced Ceramics at Ambient Temperature3. Terminologyabsorbed moisture, nwater held within the materials andhaving physical properties not substantially different fromordinary water at the same temperat
7、ure and pressure.advanced ceramic, na highly engineered, high performance,predominately non-metallic, inorganic, ceramic materialhaving specific functional attributes.agglomerate, nas used in fractography, a cluster of grains,particles, platelets, or whiskers, or a combination thereof,present in a l
8、arger solid mass.aggregate, na dense mass of particles held together bystrong intermolecular or atomic cohesive forces. It is stableto normal handling and ordinary mixing techniques includ-ing high-speed stirring and ultrasonics. (C242)back-face strain, nthe strain as meaured with a strain gagemount
9、ed longitudinally on the compressive surface of thespecimen, opposite the crack or notch mouth (often this isthe top surface of the specimen as tested). (C1421)base exchange, na surface property exhibited by collodialinorganic materials, usually clays, whereby absorbed surfacecations are replaced by
10、 other cations.body, nthe structural portion of a ceramic article, or thematerial or mixture from which it is made. (C242)calcine, v (calcination, n)firing or heating a granular orparticulate solid at less than fusion temperature, but suffi-cient to remove most of its chemically combined volatilemat
11、ter (that is, H2O, CO2) and otherwise to develop thedesired properties for use.capillary action, nthe phenomenon of intrusion of a liquidinto interconnected small voids, pores, and channels in asolid, resulting from surface tension.casting, drain (hollow casting), vforming ceramic ware byintroducing
12、 a body slip into an open, porous mold, and thendraining off the remaining slip when the cast piece hasreached the desired thickness. (C242)cermet, na composite material or article comprised of aceramic and a metal or metal alloy, interdistributed in any ofvarious geometrical forms but intimately bo
13、nded together.chatter, nan undesirable pattern created on the surface of awork piece, usually at regularly spaced intervals, due to anout-of-round, out-of-balance condition or due to an inducednatural frequency, or its harmonics, or both, in a grindingmachine.colloidal particle, na dispersed particl
14、e with a linear dimen-sion of 5 to 100 nm.1This terminology is under the jurisdiction of ASTM Committee C28 onAdvanced Ceramics and is the direct responsibility of Subcommittee C28.91 onNomenclature and Editorial.Current edition approved Feb. 1, 2013. Published March 2013. Originallyapproved in 1989
15、. Last previous edition approved in 2006 as C114506. DOI:10.1520/C1145-06R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page ont
16、he ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1comminution, nthe act or process of reduction in particlesize, usually but not necessarily by grinding or positional inhomogeneity, (CI), nas used infractography, a volum
17、e-distributed flaw that is a microstruc-tural irregularity related to the nonuniform distribution of anadditive, a different crystalline or glass phase or in amultiphase material, the nonuniform distribution of a secondphase.continuous fiber-reinforced ceramic matrix composite, naceramic matrix comp
18、osite in which the reinforcing phase(s)consists of continuous filaments, fibers, yarn, braid, orknitted or woven fabrics.crack, (CK), nas used in fractography, a volume-distributedflaw that is a plane of fracture without complete separation.crack deflection, na toughening mechanism in advancedcerami
19、cs or ceramic matrix composites characterized byfracture surface roughening and crack tilting/twisting duringpropagation around grains or a reinforcing componentcaused by stress fields around the grains or componentdeveloped through mismatches in thermal expansion ormechanical properties (such as el
20、astic modulus), or both,between grains or between reinforcement and matrix.crack orientation, na description of the plane and directionof a fracture in relation to a characteristic direction of theproduct. This identification is designated by a letter or lettersindicating the plane and direction of
21、crack extension. Theletter or letters represent the direction normal to the crackplane and the direction of crack propagation. (C1421)creep, nthe time-dependent part of a strain resulting fromstress.deairing, nthe process of removing entrapped air or ab-sorbed air from a mass or slurry, usually by a
22、pplication of avacuum.depth of penetration, n(1) the distance a penetrant hasentered into a solid material as measured from the surface ofthe material; (2) the maximum depth at which a magnetic orultrasonic indication can be measured in a test specimen.diamond paste, ndiamond dust dispersed in a pas
23、te or slurryfor use as a grinding or polishing compound.diamond tool, nany tool in which the working area is insetwith diamonds or diamond dust.diamond wheel, na bonded grinding wheel in which theabrasive grains are crushed and sized natural or syntheticdiamonds.discontinuous fiber-reinforced compos
24、ite, na ceramic ma-trix composite material reinforced by chopped fibers.dish grinder, na grinding machine equipped with a dish-shaped abrasive wheel as a grinding mechanismdish wheel, ndish-shaped abrasive grinding wheel.disk feeder, na rotating disk beneath the opening of a binwhich delivers materi
25、al from the bin at a specified rate bycontrolling the rate of rotation of the disk and the size of thegate opening of the bin.disk grinder, na grinding machine equipped with a largeabrasive disk as the work mechanism.disk wheel, na bonded abrasive wheel mounted on a plate sothat grinding may be done
26、 on the side of the wheel.drag, nthe resistance of the foot or base of a ceramic articleto shrinkage during firing time due to friction with the slabor sagger on which it rests.dressing, n(1) the process of restoring the efficiency of anabrasive grinding wheel by removal of dulled grains; (2)reshapi
27、ng the faces of grinding wheels to special contours.drum dryer, na heated, rotating drum in which tumbling orcascading raw materials are dried.drying oven, na closed unit in which specimens are dried byheating.dry milling, nthe process of reducing the particle size of asubstance by milling without t
28、he use of a liquid medium.dry screening, nthe process of separating small sizes ofgranular or powdered solids from coarser particles bypassing them through a screen of desired mesh size while inthe dry state.drying shrinkage, nthe contraction of a moist body duringthe drying process, expressed as li
29、near percent of the originallength or volume percent of the original volume.drying, vacuum, nthe technique of expediting the removalof moisture from a material or body by the use of a vacuumin conjunction with a conventional drying system.dual-drum mixer, na mixer consisting of a long drumcontaining
30、 two compartments separated by a bulkhead witha swinging chute extending through the unit.durability, nthe property of an article of being resistant tophysical or chemical damage, or both, under the usualconditions of service, and of being useful over extendedperiods of time and use.dust pressing, n
31、the process of forming ceramic bodies of1.5 % or less water content by pressing in a mold.elastic limit, nthe greatest stress that a material is capable ofsustaining without permanent strain remaining upon com-plete release of the stress. (C1259)elastic modulus, nthe ratio of stress to strain below
32、theproportional limit. (C1259)electric furnace, na furnace or kiln in which the main sourceof heat is provided by electrical means.electrical contact, nany physical contact between two ormore parts which will permit the flow of electricity betweenthe parts.electrophoresis, nthe movement of colloidal
33、 particles ormacromolecules through a solution under the action of anelectromotive force applied through electrodes in contactwith the solution.C1145 06 (2013)2emissivity, nthe ratio of the radiation given off by the surfaceof a body to the radiation given off by a perfect black bodyat the same temp
34、erature.emulsification, nthe process of dispersing an immiscibleliquid in another liquid.endothermic reaction, na chemical reaction in which heat isabsorbed.endurance, thermal, nthe ability of a ceramic product towithstand thermal shock or to withstand deterioration duringexposure to high temperatur
35、es.erosion resistance, electrical, nthe resistance of electricalinsulating materials to erosion by the action of electricaldischarges.exothermic reaction, na chemical reaction in which heat isevolved.extrude, vto shape a plastic body by forcing the bodythrough a die.extruder, na device, such as a pu
36、g mill, that forces plasticbodies through a die of appropriate shape and size in acontinuous column.feed, gravity, nthe movement of materials from one con-tainer to another container or location by force of gravity.filament, na long flexible thread of small cross section,usually extruded or drawn.fi
37、lm, na thin coating or layer of a substance over the surfaceof another material.fineness, na measurement number designating the particlesize of a material, usually reported as passing a screen of aparticular standard size.fines, nthe portions of a powder composed of particlessmaller than a specified
38、 size.finish grinding, nthe completion of a grinding operation toobtain a desired surface appearance or accurate dimensions.firing expansion, nthe increase in the dimensions of asubstance or product during thermal treatment.fissures, nsurface defects consisting of narrow openings orcracks.fixed-feed
39、 grinding, nthe process of feeding a material to beground to a grinding wheel at a given rate or in specificincrements.flexural strength, na measure of the ultimate strength of aspecified beam in bending.flexural strength, na measure of the strength of a specifiedbeam specimen in bending determined
40、at a given stress ratein a particular environment. (C1368)fluid carrier, na fluid in which particles are suspended tofacilitate their movement or application.fluid-energy mill, na size-reduction apparatus in whichgrinding is achieved by the collision of the particles beingground in a high-velocity s
41、team of air, steam, or other fluid.fluorescent penetrant, nan inspection penetrant which fluo-resces or glows in ultraviolet light.fluxing agent, nany substance which will promote fusion ofceramic materials.four-point-14 point flexure, nconfiguration of flexuralstrength testing where a specimen is s
42、ymmetrically loaded attwo locations that are situated one quarter of the overallspan, away from the outer two support bearings.fractionation, elastic, na process in which soft aggregate isseparated from harder aggregate by hurling the compositeaggregate against a steel plate, the hard particles rebo
43、undingfarther from the plate than the softer, more friable particles.fractography, nmeans and methods for characterizing afractured specimen or component.fracture origin, nthe source from which brittle fracturecommences.fracture, spontaneous, ncracking or chipping which occurswithout immediately app
44、arent external causes.fracture toughness, na generic term for measures of resis-tance to crack extension.furnace, arc-image, na furnace in which high temperaturesare produced by focusing radiation from high-temperaturearcs into the furnace chamber.furnace, image, na furnace in which high temperature
45、s aregenerated by focusing radiation from a high-temperaturesource, such as the sun or an electric arc.furnace, recuperative, na furnace equipped with a heatexchanger in which heat is conducted from the combustionproducts through a system of ducts or through flue walls ina manner so as to preheat th
46、e air as it enters the burner tounite with the fuel.furnace, regenerative, na furnace having a cyclic heatexchanger which alternately receives heat from gaseouscombustion products and transfers heat to the air or gas ofthe fuel mixture before combustion takes place.furnace, solar, nan image-type fur
47、nace in which solarradiation is focused into a relatively small area as a source ofheat producing extremely high temperatures.furnace, thermal gradient, na tubular furnace in which acontrolled temperature gradient is maintained along itslength.fuse, vto melt or join by the use of heat.fusion casting
48、, nthe process of forming items by castingmolten materials in mold.fusion point, nthe temperature or range of temperatures atwhich melting or softening, as a result of partial melting, ofa composition, will occur.C1145 06 (2013)3fusion test, nany test to determine the temperature or rangeof temperat
49、ures at which fusion takes place, or to determinethe flow or other properties of a material at fusion tempera-tures.gel, na semisolid system consisting of a network of solidaggregates in which liquid is held.handling damage, (HD), nas used in fractography,scratches, chips, cracks, etc., due to the handling of thespecimen/component.homogeneous, adjthe condition of a material in which therelevant properties (composition, structure, density, and soforth) are not a function of positio
