BS EN ISO 10271-2001 牙科金属材料.腐蚀试验方法
时间:2024-05-18 22:01:54 来源: 标准资料网 作者：标准资料网 阅读：8741
【英文标准名称】:Dentalmetallicmaterials.Corrosiontestmethods
【原文标准名称】:牙科金属材料.腐蚀试验方法
【标准号】:BSENISO10271-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-08-15
【实施或试行日期】:2001-08-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:合金;控制图;腐蚀;腐蚀试验;腐蚀作用;定义(术语);牙科设备;牙科材料;牙科学;电化学腐蚀;浸渍;浸入试验;金属材料;金属;正畸学;假体;起动试验;变色;试验
【英文主题词】:Alloys;Controlcharts;Corrosion;Corrosiontests;Corrosiveeffects;Definitions;Dentalequipment;Dentalmaterials;Dentistry;Electrochemicalcorrosion;Immersion;Immersiontests(corrosion);Metallicmaterials;Metals;Orthodontics;Prosthesis;Startingtests;Tarnish;Testing
【摘要】:ThisInternationalStandardprovidestestmethodsandprotocolstodeterminethecorrosionbehaviourofallmetallicmaterialsusedinrestorative,prostheticandorthodonticdentistryintheoralcavity,includingcast,machinedandprefabricateddevices.ThisInternationalStandardisnotapplicabletoinstrumentsandappliances.
【中国标准分类号】:C33
【国际标准分类号】:11_060_10
【页数】:30P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforQuantitativeAcceleratedLaboratoryEvaluationofExtractionSolutionsContainingIonsLeachedfromThermalInsulationonAqueousCorrosionofMetals
【原文标准名称】:金属水腐蚀热绝缘材料中浸出的含离子萃取溶液的定量加速实验室评定的标准实施规程
【标准号】:ASTMC1617-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C16.31
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:chloride;corrosion;corrosionunderinsulation;inhibition;metal;protectivecoatings;steel;thermalinsulation;Aqueouscorrosiontesting;Corrosion;Corrosionunderinsulation;Inhibitors;Masslosscorrosionrate(MLCR);Solublechlorideion;Therma
【摘要】:Corrosionassociatedwithinsulationisanimportantconcernforinsulationmanufacturers,specificationwriters,designers,contractors,usersandoperatorsoftheequipment.Somematerialspecificationscontaintestmethods(orreferencetestmethodscontainedinothermaterialspecifications),foruseinevaluatingtheinsulationwithregardtothecorrosionofsteel,copper,andaluminum.Insomecasesthesetestsarenotapplicableoreffectiveandhavenotbeenevaluatedforprecisionandbias.Aproperlyselected,installed,andmaintainedinsulationsystemwillreducethecorrosionthatoftenoccursonanun-insulatedstructure.However,whentheprotectiveweather-resistantcoveringofaninsulationsystemfails,theconditionsfortheaqueousenvironmentnecessaryforcorrosionunderinsulation(CUI)oftendevelop.Itispossibletheinsulationcontains,collects,orconcentratescorrosiveagents,oracombinationthereof,oftenfoundinindustrialandcoastalenvironments.Ifwaterisnotpresent,theseelectrolytescannotmigratetothemetalsurface.Theelectrochemicalreactionresultingintheaqueouscorrosionofmetalsurfacescannottakeplaceintheabsenceofwaterandelectrolytes.Additionalenvironmentalfactorscontributingtoincreasedcorrosionratesareoxygen,andelevated-temperature(nearboilingpoint).Chloridesandothercorrosiveionsarecommontomanyenvironments.Theprimarycorrosionpreventativeistoprotectinsulationandmetalfromcontaminationandmoisture.Insulationcovers,jackets,andmetalcoatingofvariouskindsareoftenusedtopreventwaterinfiltrationandcontactwiththemetal.Thisprocedurecanbeusedtoevaluatealltypesofthermalinsulationandfireproofingmaterials(industrial,commercial,residential,cryogenic,fire-resistive,insulatingcement)manufacturedusinginorganicororganicmaterials.Thisprocedurecanbeusedwithallmetaltypesforwhichacouponcanbepreparedsuchasmildsteel,stainlesssteel,copper,oraluminum.Thisprocedurecanalsobeapplicabletoinsulationaccessoriesincludingjacketing,covers,adhesives,cements,andbindersassociatedwithinsulationandinsulationproducts.Heattreatmentoftheinsulation(asrecommendedbythemanufactureruptothemaximumpotentialexposuretemperature)canbeusedtosimulatepossibleconditionsofuse.Adhesivescanbetestedbyfirstdryingfollowedbywaterextractionorbyapplyingaknownquantityofthetestadhesivetoatestpieceofinsulationandthenextracting.Insulatingcementscanbetestedbycastingaslab,drying,andextractingorbyusingtheuncuredinsulatingcementpowderforextraction.Referencetestspreparedwithvariousconcentrationsofsolutionsthatareconducivetothecorrosionofthetestedmetalserveascomparativestandards.Solutionscontainingchloride,sodiumhydroxide,variousacids(sulfuric,hydrochloric,nitric,andcitricacid),aswellasx201C;blankx201D;testsusingonlyde-ionizedwaterandtapwaterareused.Researchcanbedoneoninsulationthathasbeenspeciallyformulatedtoinhibitcorrosioninthepresenceofcorrosiveionsthroughmodificationsinbasiccompositionorincorporationofcertainchemicaladditives.Corrosiveionscanalsobeaddedtotheinsulationextractionsolutionstodeterminetheeffectivenessofanyinhibitorspresent.Protectivesurfacetreatmentsandcoatingsofdifferenttypesandthicknesscanbeappliedtothemetalcouponsandcomparedusingvariouscorrosiveliquids.Severalsetsoftestsarerecommendedbecauseofthenumberoffactorsthataffectcorrosion.Anaverageofthetestsandthestandarddeviationbetweenthetestresultsareusedonthedata.Muchofthecorrosionliteraturerecommendsaminimumofthreespecimensforevery........
【中国标准分类号】:H11
【国际标准分类号】:77_060
【页数】:10P.;A4
【正文语种】:英语