【英文标准名称】:StandardSpecificationforAutocatalytic(Electroless)Nickel-PhosphorusCoatingsonMetal
【原文标准名称】:金属表面自催化(无电)镍磷涂层标准规范
【标准号】:ASTMB733-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:金属的;金属覆层;表面处理;磷;金属;镍;覆层;表面自催化
【英文主题词】:autocatalytic;chemicalnickel;coatings;conductive;corrosionresistance;electroless;functional;nickel;nickelphosphorus;wearresistance
【摘要】:1.1Thisspecificationcoversrequirementsforautocatalytic(electroless)nickel-phosphoruscoatingsappliedfromaqueoussolutionstometallicproductsforengineering(functional)uses.1.2Thecoatingsarealloysofnickelandphosphorusproducedbyautocatalyticchemicalreductionwithhypophosphite.Becausethedepositednickelalloyisacatalystforthereaction,theprocessisself-sustaining.Thechemicalandphysicalpropertiesofthedepositvaryprimarilywithitsphosphoruscontentandsubsequentheattreatment.Thechemicalmakeupoftheplatingsolutionandtheuseofthesolutioncanaffecttheporosityandcorrosionresistanceofthedeposit.Formoredetails,seeASTMSTP265(1)andRefs(2)(3)(4)and().1.3Thecoatingsaregenerallydepositedfromacidicsolutionsoperatingatelevatedtemperatures.1.4Theprocessproducescoatingsofuniformthicknessonirregularlyshapedparts,providedtheplatingsolutioncirculatesfreelyovertheirsurfaces.1.5Thecoatingshavemultifunctionalproperties,suchashardness,heathardenability,abrasion,wearandcorrosionresistance,magnetics,electricalconductivityprovidediffusionbarrier,andsolderability.Theyarealsousedforthesalvageofwornormismachinedparts.1.6Thelowphosphorus(2to4%P)coatingsaremicrocrystallineandpossesshighas-platedhardness(620to750HK100).Thesecoatingsareusedinapplicationsrequiringabrasionandwearresistance.1.7Lowerphosphorusdepositsintherangebetween1and3%phosphorusarealsomicrocrystalline.Thesecoatingsareusedinelectronicapplicationsprovidingsolderability,bondability,increasedelectricalconductivity,andresistancetostrongalkalisolutions.1.8Themediumphosphorouscoatings(5to9%P)aremostwidelyusedtomeetthegeneralpurposerequirementsofwearandcorrosionresistance.1.9Thehighphosphorous(morethan10%P)coatingshavesuperiorsalt-sprayandacidresistanceinawiderangeofapplications.Theyareusedonberylliumandtitaniumpartsforlowstressproperties.Coatingswithphosphoruscontentsgreaterthan11.2%Parenotconsideredtobeferromagnetic.1.10ThevaluesstatedinSIunitsaretoberegardedasstandard.1.11Thefollowingprecautionarystatementpertainsonlytothetestmethodportion,Section,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:13P.;A4
【正文语种】:


【英文标准名称】:Productsusedforthetreatmentofwaterintendedforhumanconsumption-Granularactivatedcarbon-Part1:virgingranularactivatedcarbon.
【原文标准名称】:人类消费水处理用产品.颗粒活性碳.第1部分:纯颗粒活性炭
【标准号】:NFT94-419-1-2009
【标准状态】:现行
【国别】:法国
【发布日期】:2009-07-01
【实施或试行日期】:2009-07-24
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Activatedcarbon;Chemicalcomposition;Chemicalproperties;Definitions;Drinkingwater;Drinkingwatertreatment;Filteringmaterials;Filtrationbehaviour;Flocculents;Granulated;Granulates;Marking;Physicalproperties;Potablewater;Storage;Testing;Transport;Treatment;Water;Waterpractice;Waterpurification;Watersupply;Watertreatment
【摘要】:
【中国标准分类号】:G77
【国际标准分类号】:
【页数】:24P;A4
【正文语种】:其他