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【英文标准名称】:Methodofmeasurementofhydrogenpermeationanddeterminationofhydrogenuptakeandtransportinmetalsbyanelectrochemicaltechnique(ISO17081:2004);EnglishversionofDINENISO17081:2008-07
【原文标准名称】:使用电化学技术进行氢渗透的测量和金属中氢吸收和迁移的测定方法
【标准号】:DINENISO17081-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-07
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:合金;腐蚀;定义;测定;可扩散氢;电化学方法;电化学;电极;保持能力;氢;实验室;实验室测试;材料测试;测量;测量技术;金属;方法;渗透率;渗透;迁移的准备;抽样方法;试样制备
【英文主题词】:Alloys;Corrosion;Definition;Definitions;Determination;Diffusiblehydrogen;Electrochemicalmethods;Electrochemistry;Electrodes;Holdingcapacity;Hydrogen;Laboratories;Laboratorytesting;Materialstesting;Measurement;Measuringtechniques;Metals;Methods;Permeability;Permeation;Readinessfortransportation;Samplingmethods;Specimenpreparation
【摘要】:1.1ThisInternationalStandardspecifiesalaboratorymethodforthemeasurementofhydrogenpermeationandforthedeterminationofhydrogenatomuptakeandtransportinmetals,usinganelectrochemicaltechnique.Theterm"metal"asusedinthisInternationalStandardincludesalloys.1.2ThisInternationalStandarddescribesamethodforevaluatinghydrogenuptakeinmetals,basedonmeasurementofsteady-statehydrogenflux.Italsodescribesamethodfordeterminingeffectivediffusivityofhydrogenatomsinametalandfordistinguishingreversibleandirreversibletrapping.1.3ThisInternationalStandardgivesrequirementsforthepreparationofspecimens,controlandmonitoringoftheenvironmentalvariables,testproceduresandanalysisofresults.1.4ThisInternationalStandardmaybeapplied,inprinciple,toallmetalsforwhichhydrogenpermeationismeasurableandthemethodcanbeusedtoranktherelativeaggressivityofdifferentenvironmentsintermsofthehydrogenuptakeoftheexposedmetal.
【中国标准分类号】:H25
【国际标准分类号】:77_060
【页数】:21P.;A4
【正文语种】:英语


Product Code:SAE AS1132
Title:Bolts, Screws and Nuts - External Wrenching UNJ Thread, Inch - Design Standard
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:The scope of this standard is to define the following dimensional requirements for double hexagon, hexagon head and tee headed bolts, and nuts having a minimum tensile strength ranging up to 220 ksi, unless otherwise specified.a. Head dimensions (see 3.1)b. Shank dimensions (see 3.2)c. Geometric control (see 3.3)d. Surface texture (see 3.4)e. Dimensions for nuts (see Section 4)For design calculations the AS8879 coarse threads, UNJC, shall be used for 0.1640 thread sizes and smaller, and for larger thread sizes use fine threads, UNJF.For particulars of thread runout and lead threads for bolts, see AS3062.NOTE: The ability of a design to achieve a given strength class will ultimately depend on the selected material and the associated processing.