英语翻译TheoptimumconditionsfortheproductionofamorphousSiO2nanowiresare:anatmosphereofAr(51.99kPa)andO2(1.33kPa),at1300215003andinthepresenceofTiSicoveringTifoil.Butbeforeheatingtoitsmeltingpoint,adecomposerea

　　英语翻译

　　TheoptimumconditionsfortheproductionofamorphousSiO2nanowiresare:anatmosphereofAr(51.99kPa)andO2(1.33kPa),at1300215003andinthepresenceofTiSicoveringTifoil.Butbeforeheatingtoitsmeltingpoint,adecomposereactionforTiSitakesplaceatapressureofPθ,accordingtothisreasonwehereadvanceaplausiblepartialexplanationoftheseresultsinvolvingathermaldecomposereactionofTiSiTiSiTi+Si(1)leadingtotheformationvaporSi.TheSithenimmediatelyreactswithO2toformSiO2attheexperimentaltemperature:Si+O2SiO2(2)Fig.1.Designofthechamberfortheheatingexperiment.No.4ANOVELCHEMICALROUTETOSiO2NANOWIRES391Fig.2.(a)WhiteproductgrowingontheTifoilsurface,(b)largequantitiesofthenanowiresofsmoothsurfaceanduniformdiameter,(c)HRTEMimageofthenanowires,(d)EDXanalysesofindividualnanowire.TheSiO2fromeq.(2)condensesolidSiO2.Aslongasnucleiformed,i.e.shorternanowires,thermalflowoccursalongthenanowireaxis,hencethenanowiregrowthcontinuesalongthisnanowireaxis.Soheatisdissipatingalongaandcaxes[8](fig.3(a)),sothatthisgrowthprocessremainsthermodynamicbalance.Finally,theverylongSiO2nanowiresareformed.TheamorphousSiO2nanowiresarebelievedtoformbychemicalreactionsandanalogousgrowthmechanismsinvolvingavapor-liquid-solidprocess.Fig.