Corrosion Resistance of Zircadyne英石的耐腐蚀

《Corrosion Resistance of Zircadyne英石的耐腐蚀》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、CorrosionResistanceofZircadyneAlloysInSpecificMediaHydrochloricAcidOneoftheearliestapplicationsforAerationdoesnotaffectzirconiumwasinthehandlingofzirconiumsbehaviorinhydrochlorichydrochloricacid.Zirconiumisstillacid.However,oxidizingimpuritieswidelyusedinthisarea.Thecorro-suchascupricorferri

2、cchloridesinsionrateofzirconiumislessthan5relativelysmallamountswillmpyatallconcentrationsanddecreasethecorrosionresistanceoftemperatureswellinexcessofthezirconiuminhydrochloricacid.Theseboilingpoint.Evenin37%HCI,zir-oxidizingionsshouldbeavoidedorconiumdoesnotcorrodeappreciablyelectrochemica

3、lprotectionmethodsuntiltemperaturesof130°Careshouldbeusedtocounteractthereached(seeFigure1).Zirconiumseffectofoxidizingimpurities.Pleasecorrosion-resistantbehaviorinpurecontactourTechnicalServiceshydrochloricacidissuperiortoanyDepartmentformoreinformationonotherengineeringmetal.thistechnique

4、.Concentration(WeightPercent)*AvoidFe+,Cu++ionsFIGURE1.CorrosionofZircadyne702inhydrochloricacidsolutions.AverageCorrosionTemperatureDurationofRaWTpy)ISolutionCTest(Days)70270532%HCI30910.030.0310%HCI+100ppmFeCI,30910.90.732%HCI+5ppmFeCI,309132%HCI+50ppmFeCI,309132%HCI+100ppmFeCI,3091*Severe

5、pittingandstresscrackingobserved.6CurrentapplicationsofzirconiummadeofzirconiumareusedbyApplicationsOfequipmentinhydrochloricacidin-chemicalcompaniesintheproduc-bZirconiumIncludepumps,valves,piping,con-tionofpolymers.Otherhydrochloricdensers,andevaporators.Zirconiumapplicationswherezirconium

6、hasHydrochloricAcidheatexchangers,pumps,andbeenusedarephthalic-hydrochloricagitatorshavebeenusedforover20acidandwethydrogenchloride-yearsinanazodyecouplingreaction.chlorineatmospheres.Averyimpor-Besidesbeingverycorrosionresis-tantapplicationforzirconiumisintantinthisenvironment,zirconiumproc

7、essesthatcyclebetweendoesnotplateoutundesirablesaltshydrochloricorsulfuricacidandwhichwouldchangethecolorandalkalinesolutions.stabilityofthedyes.HeatexchangersThecorrosionresistanceofzir-atthehigherconcentrations(shownSulfuricAcidconiuminsulfuricac