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【英文标准名称】:StandardTestMethodforApparentPorosityinCementedCarbides
【原文标准名称】:烧结碳化物显气孔率的标准试验方法
【标准号】:ASTMB276-2005(2010)
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:B09.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:显气孔率;硬质合金;硬性金属;微观结构;粉末冶金;孔隙率
【英文主题词】:apparentporosity;cementedcarbides;hardmetals;microstructure;powdermetallurgy;Porosity
【摘要】:Cementedcarbidematerialsmaycontainsmallvoidsthat,dependingontheapplication,mayaffecttheperformanceoftheproduct.Toassistusersinspecifyingthemaximumacceptablelevelofporosity,thistestmethodillustratesabroadrangeofporositylevelsforeachofthreeporositytypes.Thistestmethodisnotintendedtobeusedasaspecification,butthelevelsshownheremaybecitedinspecificationswrittenbyproducersandusersofcementedcarbides.1.1Thistestmethodspecifiesproceduresforthemetallographicdeterminationofapparentporosityincementedcarbides.Note18212;Thetermx201C;apparentporosityx201D;isconstruedtomeanallmicrostructuresobservedonaproperlyprepared,unetchedsurface,includingstructuresresultingfromuncombinedcarbon,non-metallicinclusions,etc.,aswellastrue,inherentporosity.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H16
【国际标准分类号】:77_160
【页数】:3P.;A4
【正文语种】: