【英文标准名称】:StandardTestMethodforCrazingResistanceofFiredGlazedCeramicWhitewaresbyaThermalShockMethod
【原文标准名称】:用热冲击法测定焙烧上釉卫生陶瓷器抗裂开的标准试验方法
【标准号】:ASTMC554-1993(2011)
【标准状态】:现行
【国别】:
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C21.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:抗微裂性;燃烧光滑白瓷;温度急增法;破裂-光滑白瓷;温度急增材料/测试;白瓷(光滑)
【英文主题词】:crazingresistance;firedglazedceramicwhiteware;thermalshockmethod;Crazing--glazedceramicwhitewares;Thermalshockmaterials/testing;Ceramicwhitewares(glazed)
【摘要】:Unlessthereisapropermatchbetweentheexpansionsoftheglazeandthebody,allglazedwhitewaresmaycontainresidualstressesfromthefiringthatbondedtheglazetothebody.Inaddition,whitewaresareincreasinglysubjectedtothermalstressesinservice.Hence,animportantusecriterionforaglazedwhitewareisadequateresistancetorepeatedabruptthermalchanges.Inmostcases,theresultofinadequateresistancetothermalshockistheappearanceofacrazepatternintheglaze.Thiscrazepatternisvisiblebyinspectionwithobliquelightingandapplicationofasuitableinkordye.Thistestmethodisapplicabletovitreouswhitewaresthathavenegligiblecrazingasaresultofmoistureexpansion.Fornonvitreousandsemivitreousbodies,refertoTestMethodC424.1.1Thistestmethodcoversthedeterminationoftheresistancetocrazingoffired,glazed,ceramicwhitewareswhenstressesresidualafterglostfiringmaycauseatendencytocraze,suchstressesbeinginducedbyfactorsotherthanmoistureexpansion.1.2Thistestisnotintendedtoinducemoistureexpansion,whichfactshouldbekeptinmindifthematerialstobeevaluatedmayexhibitmoistureexpansion.Note18212;TestMethodC424coversamethodfordeterminingresistancetocrazinginducedbymoistureexpansion.Itsuseisgenerallyconfinedtotestingnonvitreousandsemivitreousceramicwhitewaresbecausetheseproductsmaybesubjecttosuchexpansion.Forwhitewareswithnegligiblemoistureexpansion(suchasvitreousandimperviousware),thethermalshockmethoddescribedhereinisgenerallytobepreferred.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeWarningin6.3.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.
【中国标准分类号】:Q31
【国际标准分类号】:81_060_20
【页数】:2P.;A4
【正文语种】: