铝合金循环盐雾腐蚀试验方法探讨

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中图分类号：U465.2 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250059

Discussion on Cyclic Salt Spray Corrosion Test Methods of Aluminum Alloy

Yuan Shaohong'， Song Wencheng'，Wang Jun'， Zhang Hongjing'， Shi Dandan1²，Wang Dan' （1.KeyLaboratoryofAluminumAloyMaterialPreparationandFomingofShandongProvince，HangxiMaterialTechnologyo， Ltd.，Yantai 2657OO; 2.Yantai Nanshan University，Yantai ）

Abstract：In order toobtain theconcentration of the salt spraycolectionsolution that meets thestandard requirements，thecorrsponding relationship isestablishedbetween theconcentrationof theprepared solutionand the concentration of thecollection solution inthe steam heating type salt spray corrosion test chamber：A sodium chloride salt solution with a concentration of 7.0% （70 g/L） is prepared，and the concentration of the collected solution obtained couldmeet therequirementsof ISO11997-1：2017（5Og/L±5g/L）.Foraluminumally thatcanbestrengthened by heattreatment，after thecyclicsalt spray corrosion test，observe thecorrosioncondition on thesample surface.2 to 3 areas with relativelysevere corosionare selectedon thesample surface，andthe transverse crosssectionof the vertical main deformation direction is used as the observation surface to prepare metalographic specimens，measure the maximumcorrosiondepth，and observe thecorrosion type.Combined with the macroscopiccorrosion morphologyof the original surfaceandthemicroscopiccorosionmorphologyof thecrosssection，theabilityof thematerial toresist cyclic salt spray corrosion can be evaluated comprehensively.

Key words：Aluminum aloy，Cyclic salt spraycorrosion，Salt spray concentration，Evaluationmethod

1前言

循环盐雾腐蚀试验主要用于模拟材料在沿海环境或含有盐分的工业环境中的腐蚀情况，广泛应用于汽车、航空航天、电子、建筑等领域，用于评估材料和涂层的耐腐蚀性能]。（剩余2984字）