浙江海洋大学学报穴自然科学版雪第41卷文章编号押2096原4730穴圆园23雪园4原0366原07·研究简报·老龄液氨储罐内表面腐蚀表征观测与量化分析朱丹丹1,刘群芳2,翁海华3,温小飞1(1.浙江海洋大学船舶与海运学院,浙江舟山316022;2.浙江国际海运职业技术学院,浙江舟山316021;3.舟山市特种设备检测研究院,浙江舟山316021)摘要:针对老龄液氨储罐Q245R钢内表面筒体和封头两处存在的不规则腐蚀现象,采用二值化图像处理技术提取腐蚀形貌图像的特征参数,实现储罐腐蚀区域面积定量化分析。通过扫描电镜观测Q245R钢不同取样部位下样品腐蚀形貌并结合能谱仪检测其腐蚀成分,进行微观表征。结果表明:腐蚀率、腐蚀等级、腐蚀区域扁平量3个特征参量反映的储罐腐蚀规律与微观形貌图表征分析的腐蚀行为特征相一致,即氨罐封头部位相对筒体部位整体腐蚀严重,且主要部位集中在下部液相区域,最大腐蚀率达62.75%;腐蚀形貌是以氧化物为主的不规则图像,其扁平量服从正态概率密度分布。关键词:内表面;腐蚀;Q245R钢;液氨储罐中图分类号:TG172文献标识码:AObservationandQuantitativeAnalysisofCorrosionCharacterizationontheInnerSurfaceofAmmoniaStorageTankforAgingLiquidZHUDandan1,LIUQunfang2,WENGHaihua3,etal(1.SchoolofNavalArchitectureandMaritimeofZhejiangOceanUniversity,Zhoushan316022;2.ZhejiangInternationalMarineVocationalandTechnicalCollege,Zhoushan316021;3.ZhoushanSpecialEquipmentInspectionInstitute,Zhoushan316021,China)Abstract:ForoldliquidammoniastoragetankQ245Rsteel,theirregularcorrosionphenomenonexistsontheinnersurfaceofbothcylinderandhead,binarizedimageprocessingtechnologyisusedtoextractthechar原acteristicparametersofthecorrosionmorphologyimageandrealizethequantitativeanalysisofthecorrosionareaofthestoragetank.Byusingscanningelectronmicroscope,thecorrosionmorphologyofQ245Rsteelsam原plesunderdifferentsamplingsiteswasobserved,andthecorrosioncompositionwasdetectedbycombiningwithenergyspectrometerformicroscopiccharacterization.Theresultsshowthatthethreecharacteristicparam原etersofcorrosionrate,corrosiongradeandcorrosionareaflatteningareconsistentwiththecharacteristicsof收稿日期:2023-02-25基金项目:舟山市科技计划项目(2020C31106);浙江省重点研发计划(...