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Branaganetal.DevelopingBMNintoindustrialproducts

5Structuralformationmodeltodevelopthinmonolithictechnology

solutions

productforms,theabilitytoachievecombinationsoffabricshavebeenusedwithimprovementsinpropertiesstrength(2?5upto4?0GPa)andductility(3–7%)issuchasabrasion/cutresistance,temperaturestability,enablingforawholehostofpotentialapplications.EMI/RFIshielding,resistanceheatingandsignaltrans-ExamplesofproductformsmadefrommonolithicmissionalongwithimprovedenvironmentalstabilityduetechnologyareshowninFig.7.Figure7ashowshightoresistancetowatervapourandUVabsorption.

strength bresaddedataloadingrateof30kgm23inFormonolithictechnology,productdevelopmentisordertodevelopconcretewithhigherresistancetocrackcontinuingasindustrylearnstoworkwithanewclassofformationandtomaintainresidualstrengthafterthematerials.However,thefutureimplementationofthiscrackforms.InFig.7b,ahoneycombstructureisshowntechnologymaybeexpectedtoprogresswithincreas-madefromfoil,whichhasahigherspeci cstrengthinglythickerproductsanalogoustothedevelopmentalandspeci cstiffnessthanexistinghoneycombstructurespathwaytosurfacetechnologyasshowninFig.8.Oneaswellasgreater reandheatresistance.Figure7candkeytechnologicalhurdletoovercomeisprocesswindowdshowsexamplesoffabricproducedbyweavingnarrowexpansionfromtheexistingcoolingraterequirementsof lamentsofSGMMfoil(Fig.7c)oraramidserved104Ks21downtothe103–100Ks21rangedependingSGMMfoil lamenthybridyarns(Fig.7d).Thefabricsonthecommercialproductionstrategy.Inaccordancecanbeappliedwheretraditionalhighstrengthpolyamidewithglassformingabilityrequirements,two

potential

aimage(SEM)showinghighdensityofshearbandsincludinginducedshearblandblunting(smallcircles)andSBAI(largecircles);bTEMimageshowinginteractionofshearbandwithSGMMstructureleadingtoblunting;cTEMimageshowingSBAI

6Micrographsofshearbandinginmeltspunribbonafterexperiencingtensileload

MaterialsScienceandTechnology2013

VOL

29

NO

101197