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《镁合金的表面处理（surface treatment of magnesium alloy）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、镁合金的表面处理（Surfacetreatmentofmagnesiumalloy）SurfacetreatmentofmagnesiumalloyLiuZumingLebanonAbstract:thecorrosionmechanismandcorrosionprotectionofmagnesiumalloysarereviewed.Thestatus,progressandproblemsarereviewed.Thesurfacecharacteristics,surfacetreatmentprinciple,process,applicationexample
2、sandfuturedevelopmentdirectionofdiecastingmagnesiumalloyproductsaremainlyintroduced.Keywords:magnesiumalloycorrosionandprotectionsurfacetreatment0PrefaceWithlightandRecyclableformagnesiumalloyapplicationcharacteristics,hasbecometheidealmaterialformodernindustrialproducts,especiallytheappli
3、cationofalargenumberofautoparts,telecommunicationsproductstothedevelopmentoflightandthinandshortandsmalldirectionofdemand,makesthedevelopmentofthisnewmaterialisextremelyoptimisticabouttheprospects.Withthedevelopmentofmoderntechnology,hasbeenplaguedbymagnesiumalloyindustryrelatedtechnicalpr
4、oblemssuchasdie-casting,recyclingproblemhasbeenresolved,afterthemajorprocessofmagnesiumalloyproducts-surfacetreatmenttechnologyhasmadeprogress,whichmakestheapplicationofmagnesiumalloyisconstantlyexpanding,consumptionhasincreasedrapidly,themagnesiumindustryisthegeometricspeedgrowth.Propersu
5、rfacetreatmentcanmaketheproductprotectiveanddecorative,andcangivesomespecialfunctions.Foractivemagnesium,itisimportanttoobtainhighdecorativeandfunctionalpropertiesbysurfacetechnology,andimprovingitscorrosionresistanceisthemostimportantaspectatthisstage.Corrosionandprotectionof1magnesiumall
6、oyPropertiesof1.1magnesiumMagnesiumelementsymbolMg,atomicnumber12,theelectronicstructureof2-8-2,anegativestandardelectrodepotential(-2.36V),avolatileelectronicandoxidized,resultinginmagnesiumandmagnesiumalloycorrosionresistanceisverypoor,inthecorrosivemediumispronetoseverecorrosion.Theoxid
7、efilmformedbymagnesiumalloyislooseandporous.ThedensitycoefficientofMgOandMg2+filmisabout0.8(<1),whichhaspoorprotectionabilitytothematrix,andisnotsuitableformostcorrosiveenvironment.Corrosionmodeof1.2magnesiumalloyThecorrosionofmagnesiumalloyusuallyhastwoways:o
