GM9540P
ACCELERATEDCORROSIONTEST
加速腐蚀实验
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1SCOPE.Thisproceduredescribesanacceleratedlaboratorycorrosiontestmethodtoevaluate
assembliesandcomponents.Thetestprocedureprovidesacombinationofcyclicconditions(salt
solution,varioustemperatures，humidity,andambientenvironment)toacceleratemetallic
corrosion.Theprocedureiseffectiveforevaluatingavarietyofcorrosionmechanisms,suchas
general,galvanic,crevice,etc.Thetestdurationcanbeindividuallytailoredtoachieveany
desiredlevelofcorrosionexposure.Also,synergisticeffectsduetotemperature,mechanicaland
electricalcyclingcanbecomprehendedbythistest.SeeAppendixAfortypicalmodifications.
NOTE:TestdurationsAandBcanbeusedasbothQCtestsandvalidationtestsdependingon
thepurposeofthetest.TestdurationsCandDoranymodifiedtestaretobeusedforvalidation
anddevelopmentpurposes.
1.范围。本实验（加速腐蚀实验）是评估零件和组建的方法。本实验过程以一套循环体系（盐溶液，
不同温度条件，湿度，周围环境）来进行金属加速腐蚀实验。本实验过程可以有效评估各种腐蚀
途径如普通腐蚀，电腐蚀，裂缝等。本实验可以达到任何腐蚀曝露要求水平。当然本实验也包含
了一些由温度，机械和电循环造成的相互影响。见附件A的典型修改。
注：基于本实验的目的，用循环实验方案A和B来进行QC实验和认证实验，循环实验C和D或
其它改良实验仅为验证和发展所用。
1.1Thetestmethodiscomprisedof1.25%(0.9%sodiumchloride,0.1%calciumchlorideand
0.25%sodiumbicarbonate)saltmistapplicationscoupledwithhightemperatureandhigh
humidityandmoderatelyhightemperaturedryoff.Itrequiresa16hworkdayoranautomatic
cyclingtestchamber.
IMPORTANT:Engineeringdrawingsandmaterialspecificationsthatreferencethistestprocedure
mustspecifythetestduration,(A,B,CorD)orthenumberoftestcyclesasindicatedinTable1.
(Example,GM954OP.TestDurationB.)Inaddition,thecriteriaformakingpass/fail
determinationsmustbespec