cetp-00.00-l-467-全球?qū)嶒?yàn)室加速循環(huán)腐蝕試驗(yàn)

1、1.0INTRODUCTION介紹介紹1.1TESTSCOPE試驗(yàn)范圍Thisstardspecifiesanacceleratedlabatyatmosphericcrosiontest.ThetestingenvironmentaddressedissimilarineffecttothatofthesaltloadclimaticpartoftheprovinggroundcrosiontestprocedureCETP00.00

2、R343yieldscrespondingresults.Theobjectiveofthetestistoallowevaluationofthecrosionresistanceofmetalsinenvironmentswherethereisasignificantinfluenceofchlideionsmainlyassodiumchlidefromamarinesourcebywinterroaddeicingsalt.T

3、helabatytestprovidesfullexposuretothesaltloadhuityenvironment.Itdoesnotattempttosimulateotherengravingfactssuchasmudloadstemperaturestresseswear.Itservesasageneralpurposeatmosphericcrosiontestappliestoavarietyofmaterials

4、coatingsinteractionsofmaterialsbothastestspecimensindesignedcomponents.Thetestcanbeusedasadesignverificationmethodinderto(a)developqualifynewcrosionresistantproducts(b)developnewpretreatmentsfinishingprocesses(c)material

5、s(d)perfmqualitycontrolofthefinalproduct.本標(biāo)準(zhǔn)是關(guān)于一項(xiàng)在實(shí)驗(yàn)室里加速進(jìn)行的大氣腐蝕試驗(yàn)。本文所述的試驗(yàn)環(huán)境類似于《試驗(yàn)場腐蝕試驗(yàn)程序CETP00.00R343》中的鹽負(fù)荷環(huán)境影響部分，得出相應(yīng)的結(jié)果。試驗(yàn)?zāi)康脑谟谠u估金屬在富含氯化物的環(huán)境中（主要是海水中的鹽或冬天用于融雪的鹽）的抗腐蝕性。該實(shí)驗(yàn)室試驗(yàn)主要是將試驗(yàn)件完全暴露在濕潤的鹽負(fù)荷環(huán)境中，而非模擬其他摩擦因素如泥負(fù)荷、溫度壓力或磨損。該試

6、驗(yàn)主要作為一項(xiàng)大氣腐蝕試驗(yàn)，適用于各種各樣的材料、涂層、試樣或設(shè)計(jì)零部件材料的相互作用。該試驗(yàn)可作為一種驗(yàn)證設(shè)計(jì)的方法，用于(a)開發(fā)并驗(yàn)證新的抗腐蝕產(chǎn)品；(b)開發(fā)新的預(yù)處理和表面處理工藝；(c)選擇材料；(d)對最終產(chǎn)品的質(zhì)量控制。Thestardspecifiescontrolledconditionsfequipmentprocedurestoallowthetesttobeperfmedwithahighdegreeofrep

7、eatabilityreproducibility.Itisdesignedtobesuitabletoruninvariousclimatechamberseitherasafullyautomatedprocedurewithpartialmanualoperations.本標(biāo)準(zhǔn)說明了設(shè)備和程序的受控條件，讓實(shí)驗(yàn)具有高度的重復(fù)性和再現(xiàn)性。本標(biāo)準(zhǔn)適用于多種環(huán)境試驗(yàn)箱，包括全自動(dòng)試驗(yàn)或部分手動(dòng)操作的試驗(yàn)。1.2SUMMARYOFTEST

8、CONTENT試驗(yàn)內(nèi)容摘要Thewkdaytestprocedureconsistsof:工作日的試驗(yàn)程序由以下幾個(gè)方面組成：?A6hwetphaseatroomtemperature.withintermittentexposuretosaltsolution(0.5%NaCl).?A2.5htransitionphasewithdryingunderclimatecontrol.?A15.5hphasewithconstanttem

9、peraturehuity(50?C70%RH).?室溫下6小時(shí)的加濕階段，間歇曝露到0.5%的氯化鈉溶液中?2.5小時(shí)的過渡階段，通過環(huán)境控制進(jìn)行烘干?15.5小時(shí)的恒溫恒濕階段(50?C70%RH)2.5Ahighqualitydevicefindependentcontroloftemperaturerelativehuityshallbeaccessible.Thisinstrumentshallonastipulatedreg

10、ularinterval(Ref5.4)beusedfindependentmonitingcalibrationoftheconditionsintheverytestplaneoftheexposurechamber.Thetotalmeasurementerrmustnotexceed0.1?C.2.5一套高質(zhì)量的設(shè)備，用于獨(dú)立控制溫度和相對濕度。該設(shè)備按照規(guī)定的時(shí)間間隔（參考5.4），獨(dú)立監(jiān)控和校正試驗(yàn)箱李的試驗(yàn)平面上的各項(xiàng)條件

11、，測量總誤差不超過0.1?C。2.6Racksofinertmaterialfsupptalignedfixationoftestspecimensmustnothamperafreeairflowaroundthetestobjectsncollectstingwetness.Thetestobjectsinarackmustnotscreenoneanotherfromthesaltsolutiondownfalltheyshoul

12、dbeexposedwiththestipulatedexposureangletothespray(1520degreesinclinationfromvertical).2.6由惰性材料制成的夾具，用于支撐、排列和固定試樣，但不得妨礙試樣周圍的空氣流通，不得累積水分。夾具上的試樣不得相互遮蔽導(dǎo)致鹽溶液淋不到試樣上。試樣應(yīng)按規(guī)定的角度曝露到噴霧中（偏離垂直線1520度）。2.7Pressurizedhsprayequipmentfap

13、plicationofthe0.5%NaClsolutionifamanualsprayprocedureisused.Thecapacitymustbesufficienttomeetthedownfallrequirement(Ref.3.3.1).2.7如需采取手動(dòng)噴灑，應(yīng)使用適用于0.5%鹽溶液的加壓型手動(dòng)噴霧器，噴霧器的容量必須能滿足噴灑要求（見3.3.1）。2.8Funnelsbeakersmeasuringglassesa

14、balancewithatleast0.1gaccuracyfmonitingcalibrationofsaltsolutiondownfallthroughoutthetestplaneoftheexposurechamber.2.8漏斗、燒杯量杯以及精確度至少為0.1g的天平，用于監(jiān)控和校準(zhǔn)曝露箱中試驗(yàn)平面上落下的鹽溶液。2.9Alltestmeasurementequipmentmustbecalibratedmaintained

15、perFAP03015ControlCalibrationMaintenanceofMeasurementTestEquipment.2.9所有試驗(yàn)的測量設(shè)備的校準(zhǔn)和維護(hù)必須按照《FAP03015測量和試驗(yàn)設(shè)備的控制，校準(zhǔn)和維護(hù)程序》。2.10Allapplicablesafetyguidelinesproceduresmustbefollowed.2.10試驗(yàn)須遵守所有適用的安全指引和安全程序。3.0EQUIPMENTFACILITI

16、ES設(shè)備設(shè)施設(shè)備設(shè)施Thenecessarypermanentlyinstalledfacilitytoconductthetestconsistsofaprogrammablehuitychamberofgoodquality.Itispreferablyequippedwithanintegratedrigfsprayingsaltsolutionoftherequiredamountaccuracycoolingcapacitya