标准资料网-标准资料免费资源平台

【英文标准名称】:StandardGuideforPreparationofAluminumAlloysforElectroplating
【原文标准名称】:电镀用铝合金的制备标准指南
【标准号】:ASTMB253-1987(2010)
【标准状态】:现行
【国别】:
【发布日期】:1987
【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】:B08.02
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:铝合金;黄铜电镀;铬电镀;电沉积物铜镀层;电沉积物金镀层;电镀镀层;镀镍;锌酸盐过程;电沉积物锌镀层
【英文主题词】:Aluminumalloys;Brasselectrodeposition;Chromiumelectroplating;ElectrodepositedCucoatings;Electrodepositedgoldcoatings;Electroplatedcoatings;Nickelcoatings;Zincateprocess;Zincelectrodepositedcoatings
【摘要】:Variousmetalsaredepositedonaluminumalloystoobtainadecorativeorengineeringfinish.Theelectroplatesappliedareusuallychromium,nickel,copper,brass,silver,tin,lead,cadmium,zinc,gold,andcombinationsofthese.Silver,tin,orgoldisappliedtoelectricalequipmenttodecreasecontactresistanceortoimprovesurfaceconductivity;brass,copper,nickel,ortinforassemblybysoftsoldering;chromiumtoreducefrictionandobtainincreasedresistancetowear;zincforthreadedpartswhereorganiclubricantsarenotpermissible;tinorleadisfrequentlyemployedtoreducefrictiononbearingsurfaces.Nickelpluschromiumorcopperplusnickelpluschromiumisusedindecorativeapplications.Nickelplusbrasspluslacquerorcopperplusnickelplusbrasspluslacquerisalsousedfordecorativefinishes,sometimeswiththebrassoxidizedandrelievedinvariousways.Electrolessnickelmaybeappliedasabarrierlayerpriortootherdeposits,orforengineeringpurposes.ThepreparationofaluminumandaluminumalloymandrelsforelectroformingisdescribedinPractice.1.1Thisguidecoverscleaningandconditioningtreatmentsusedbeforemetaldeposition(Section5),andimmersiondeposit/strikeprocedures(Section6)thatenhancetheadhesionofmetalsthataresubsequentlyappliedtoaluminumproductsbyelectrodepositionorbyautocatalyticchemicalreduction.1.2Thefollowingimmersiondeposit/strikeproceduresarecovered:1.2.1Zincimmersionwithoptionalcopperstrike(6.3).1.2.2Zincimmersionwithneutralnickelstrike(6.4).1.2.3Zincimmersionwithacetate-buffered,nickelglycolatestrike(6.5).1.2.4Zincimmersionwithacidoralkalineelectrolessnickelstrike.1.2.5Tinimmersionwithbronzestrike(6.6).1.3Fromtheprocessingpointofview,theseproceduresareexpectedtogivedepositsonaluminumalloysthatareapproximatelyequivalentwithrespecttoadherence.Corrosionperformanceisaffectedbymanyfactors,however,includingtheprocedureusedtopreparethealuminumalloyforelectroplating.1.4Thisguideisintendedtoaidelectroplatersinpreparingaluminumanditsalloysforelectroplating.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecificprecautionarystatementsseeSection7andAppendixX1.
【中国标准分类号】:H61
【国际标准分类号】:25_220_10
【页数】:7P.;A4
【正文语种】:


Product Code:SAE AMS3656
Title:Polytetrafluoroethylene (PTFE) Extrusions, Normal Strength, As Sintered
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers a virgin, unfilled polytetrafluoroethylene (PTFE) in the form of extruded and sintered rods, tubes, and profiles.