Mechanochemical processing of IrO2-Ta2O5: An alternative route for synthesizing Ir and Ir(Ta)O2 solid solution.

dc.contributorRojas, Paula
dc.date.accessioned2021-11-23T12:07:58Z
dc.date.accessioned2022-11-08T20:37:35Z
dc.date.available2021-11-23T12:07:58Z
dc.date.available2022-11-08T20:37:35Z
dc.date.created2021-11-23T12:07:58Z
dc.identifierhttps://repositorio.uai.cl//handle/20.500.12858/2770
dc.identifier10.1016/j.bsecv.2020.01.010
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5148409
dc.description.abstractThispaperdescribesastudyexploringmillingandsubsequentheattreatmentsofpureIrO2andTa2O5powders.ReactantsweremilledunderAratmosphereinaSPEX8000Dmill,withstructural,morphological,andcompositionalcharacterizations(duringmillingandaftersubsequentheattreatments)byX-raydiffraction,energy-dispersivespectroscopy,andtransmissionelectronmicroscopy.Electrochemicalstabilityofpowderswasevaluatedbyopencircuitpotential(OCP).ResultsshowedthatthemechanicalenergytransferredduringthisprocessinducesareactionbetweenIrO2andTa2O5,formingmetallicIrandIr(Ta)O2saturatedsolidsolution.Thestudyadditionallyshowsthatthisreactioncanbethermallyinducedwithpreviousmechanicalactivationofreactants.Electrochemicaleval-uationsofmilledpowdersimmersedinH2SO4solutionrevealedthatOCPshiftsnegativelywithincreasingmillingtime,approachingthatofpureIrat15hmilling
dc.titleMechanochemical processing of IrO2-Ta2O5: An alternative route for synthesizing Ir and Ir(Ta)O2 solid solution.
dc.typeArtículo Scopus


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