HB/Z 5092.4-2001 电镀黑铬溶液分析方法 电位滴定法测定乙酸的含量
作者:标准资料网 时间:2024-05-10 16:40:18 浏览:8369
来源:标准资料网
基本信息
| 标准名称： | 电镀黑铬溶液分析方法 电位滴定法测定乙酸的含量 |
| 中标分类： |
综合 >>
基础标准 >>
材料防护 |
| ICS分类： |
机械制造 >>
表面处理和涂覆 >>
金属镀层
|
| 发布日期： | 2001-11-15 |
| 实施日期： | 2002-02-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
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前言
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引用标准
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所属分类： 综合 基础标准 材料防护 机械制造 表面处理和涂覆 金属镀层
【英文标准名称】:Textilefloorcoverings-Laboratorycleaningprocedureusingsprayextraction
【原文标准名称】:铺地织物.采用喷雾提取法的实验室清洁程序
【标准号】:BSISO11379-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-06-30
【实施或试行日期】:2009-06-30
【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】:地毯;化学清洗;清洁处理;清洁设备;清洁器;室内大地毯;地板覆盖物;实验室试验;维护;维护说明书;去除污渍;试验;纺织品;铺地织物;纺织材料
【英文主题词】:Carpets;Chemicalcleaning;Cleaning;Cleaningequipment;Cleanings;Fittedcarpets;Floorcoverings;Laboratorytesting;Maintenance;Maintenanceinstructions;Removalofstains;Testing;Textile;Textilefloorcoverings;Textiles
【摘要】:
【中国标准分类号】:W56
【国际标准分类号】:59_080_60
【页数】:12P;A4
【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】:
