BS ISO 9239-1-1998 防火试验的反作用.地板覆盖物装置燃烧的水平表面扩展.第1部分:使用辐射热点燃源的燃烧扩展
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【英文标准名称】:Reactiontofiretests.Horizontalsurfacespreadofflameonfloor-coveringsystems.Flamespreadusingaradiantheatignitionsource
【原文标准名称】:防火试验的反作用.地板覆盖物装置燃烧的水平表面扩展.第1部分:使用辐射热点燃源的燃烧扩展
【标准号】:BSISO9239-1-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-03-15
【实施或试行日期】:1998-03-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:报告;燃烧试验;试验设备;公式;耐火性;楼板;均值;热电偶;地板覆盖物;通量;再现性;校正;试样;易燃性;火焰表面传播
【英文主题词】:
【摘要】:
【中国标准分类号】:Q17
【国际标准分类号】:59_080_60;97_150;13_220_40
【页数】:36P;A4
【正文语种】:英语
【英文标准名称】:IndustrialControlandSystemsAdjustable-SpeedDrives
【原文标准名称】:工业控制和系统可调速传动装置
【标准号】:ANSI/NEMAICS7-1993
【标准状态】:作废
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;工业流程测量;控制设备
【英文主题词】:industrialprocessmeasurement;electricalengineering;controlequipment
【摘要】:
【中国标准分类号】:N17
【国际标准分类号】:29_130_01
【页数】:
【正文语种】:英语
【英文标准名称】:StandardSpecificationforAutocatalyticNickelBoronCoatingsforEngineeringUse
【原文标准名称】:工程用自动催化镍硼铸件
【标准号】:ASTMB607-1991(2003)
【标准状态】:现行
【国别】:
【发布日期】:1991
【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】:B08.08.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:镍;硼;金属覆层
【英文主题词】:autocatalytic;aqueous;sodium;checmicals
【摘要】:1.1Nickelboroncoatingsareproducedbyautocatalytic(electroless)depositionfromaqueoussolutions.Thesesolutionscontaineitheranalkylamineboraneorsodiumborohydrideasareducingagent,asourceofnickelions,abuffer,complexant,andcontrolchemicals.1.2Thisstandarddescribestherequirementsforcoatingsofautocatalyticnickelborondepositedfromaqueoussolutionsontosubstratesforengineeringuse.Thespecificationclassifiesthesecoatingsintotwotypes:1.2.1Type1coatingshaveaboroncontentof0.1tolessthan3.5masspercentwiththebalancenickel.1.2.2Type2coatingshaveaboroncontentof3.5to6masspercentandaminimumof90masspercentnickel.1.3Thecoatingsarehardanduniforminthickness,evenonirregularshapedparts,andusedinawiderangeofapplications.1.4Processsolutionsformulatedwithanalkylamineboraneusuallyproducecoatingsthatcontain0.1to3.5%boron.Thincoatingsofthistypeprovidebondabilityandsolderabilityonelectroniccomponentssuchasleadframes,electricalcontacts,andheaders.Tomaintainsolderability,thesecoatingsaregenerallynotheattreated.1.5Processsolutionsformulatedwithsodiumborohydridearestronglyalkalineandarefrequentlyusedtoplatesteelandtitaniumpartstoimpartsurfacehardnessandwearresistanceproperties.Depositsproducedfromtheseprocessescancontain3to5%boronandthalliumorothermetalswhichareusedtostabilizetheplatingsolutionandmodifythecoatingproperties.1.6Thephysicalandmechanicalpropertiesofthesedepositssuchasdensity,hardness,stress,andmeltingpointwillvarywiththeboroncontent.Thevariationofboroncontentalsoaffectsthequantityandstructureofnickelborideprecipitatedduringheattreatment.Intheas-platedconditionthedepositconsistsofapredominantlyamorphousmixtureofnickelandboronwithahardnessofabout700HKN.Whenthedepositisheatedabove300176;Cthenickelcrystallizes,formingnickelclustersofNi(111)andboronprecipitatesasnickelboride,Ni3B(211)and(311),increasingthehardnesstogreaterthan1000HK100forType2coatings.1.7Thenickelboroncoatingsaremicroporousandofferlimitedcorrosionprotection.Theircolumnarstructure,however,isbeneficialinreducingwearbecauseitprovidesameansoftrappinglubricantswithinthesurfaceofthecoatedpart.1.8Thisdocumentdescribesonlyautocatalyticnickelboroncoatingsthathavebeenproducedwithoutuseofexternalelectricsources.1.9ThefollowinghazardscaveatpertainsonlytotheTestMethodssectionofthisspecification:Thisstandarddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThefollowingAMSstandardsarenotrequirements.Theyarereferencedforinformationonly:AMS2399andAMS2433.
【中国标准分类号】:H62
【国际标准分类号】:25_220_40
【页数】:6P.;A4
【正文语种】:
