1、Designation:D11686(Reapproved 2011)Standard Test Methods forVitrified Ceramic Materials for Electrical Applications1This standard is issued under the fixed designation D116;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 These test methods outline procedures
3、for testingsamples of vitrified ceramic materials that are to be used aselectrical insulation.Where specified limits are mentionedherein,they shall not be interpreted as specification limits forcompleted insulators.1.2 These test methods are intended to apply to unglazedspecimens,but they may be equ
4、ally suited for testing glazedspecimens.The report section shall indicate whether glazed orunglazed specimens were tested.1.3 The test methods appear as follows:ProcedureSectionCompressive strength6C773Dielectric strength13D618,D149Elastic properties8C623Electrical resistivity15D618,D257,D1829Flexur
5、al strength7C674,F417Hardness9C730,E18Porosity5C373Relative permittivity and dissipation factor14D150,D2149,D2520Specific gravity4C20,C329,F77Thermal conductivity10C177,C408Thermal expansion12C539,E288Thermal shock resistance111.4 This standard does not purport to address all of thesafety concerns,i
6、f any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific precautionstatements are given in 11.3,13.5,and 15.3.2.Referenced Documents2.1 AST
7、M Standards:2C20 Test Methods for Apparent Porosity,Water Absorption,Apparent Specific Gravity,and Bulk Density of BurnedRefractory Brick and Shapes by Boiling WaterC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate Apparatu
8、sC329 Test Method for Specific Gravity of Fired CeramicWhiteware MaterialsC373 Test Method for Water Absorption,Bulk Density,Apparent Porosity,andApparent Specific Gravity of FiredWhiteware Products,Ceramic Tiles,and Glass TilesC408 Test Method for Thermal Conductivity of WhitewareCeramicsC539 Test
9、Method for Linear Thermal Expansion of Porce-lain Enamel and Glaze Frits and Ceramic WhitewareMaterials by Interferometric MethodC623 Test Method for Youngs Modulus,Shear Modulus,and Poissons Ratio for Glass and Glass-Ceramics byResonanceC674 Test Methods for Flexural Properties of CeramicWhiteware
10、MaterialsC730 Test Method for Knoop Indentation Hardness of GlassC773 Test Method for Compressive(Crushing)Strength ofFired Whiteware MaterialsD149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Met
11、hods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD1829 Test Method for El
12、ectrical Resistance of CeramicMaterials at Elevated Temperatures(Withdrawn 2001)3D2149 Test Method for Permittivity(Dielectric Constant)And Dissipation Factor Of Solid Dielectrics At Frequen-cies To 10 MHz And Temperatures To 500CD2520 Test Methods for Complex Permittivity(DielectricConstant)of Soli
13、d Electrical Insulating Materials at Mi-crowave Frequencies and Temperatures to 1650C1These test methods are under the jurisdiction of ASTM Committee C21 onCeramic Whitewares and Related Products and is the direct responsibility ofSubcommittee C21.03 on Methods for Whitewares and Environmental Conce
14、rns.Current edition approved March 1,2011.Published March 2011.Originallyapproved in 1921.Last previous edition approved in 2006 as D116 86(2006).DOI:10.1520/D0116-86R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual B
15、ook of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 E1
16、8 Test Methods for Rockwell Hardness of Metallic Ma-terialsE288 Specification for Laboratory Glass Volumetric FlasksF77 Test Method for Apparent Density of Ceramics forElectron Device and Semiconductor Application(With-drawn 2001)3F417 Test Method for Flexural Strength(Modulus of Rup-ture)of Electronic-Grade Ceramics(Withdrawn 2001)33.Significance and Use3.1 For any given ceramic composition,one or more of theproperties covered herein may be of more importance for agiven insulating application t
