Ngexesha lokugquma kwe-evaporation, i-nucleation kunye nokukhula komgangatho wefilimu sisiseko setekhnoloji yokwaleka kwe-ion ezahlukeneyo
1.Inucleation
Initekhnoloji yokwambathisa ivacuum,emva kokuba amasuntswana umaleko ifilim arhaxwa kumthombo evaporation ngendlela yeeathom, babhabhe ngqo workpiece kwi vacuum eliphezulu kwaye enze umaleko film by nucleation kunye nokukhula phezu komphezulu workpiece.Ngexesha lokufunxa kwevacuum, amandla omaleko wefilim weathom aphuma kumthombo wokuphuphuma komphunga amalunga ne-0.2eV.Xa umanyano phakathi kwamasuntswana omaleko wefilimu mkhulu kunamandla okudibanisa phakathi kweeathom zomaleko wefilimu kunye nesixhobo sokusebenza, yenza i-nucleus yesiqithi.Iathom enye yomaleko wefilimu ihlala kumphezulu wecwecwe lexesha elide isenza intshukumo engaqhelekanga, ukusasazwa, ukufuduka, okanye ukungqubana nezinye iiathom zokwenza amaqela eathom. i-nucleus yenziwa, ebizwa ngokuba yi-homogeneous shaped nucleus.
egudileyo, kwaye iqulethe iziphene ezininzi kunye namanyathelo, nto leyo ebangela umahluko kumandla we-adsorption weendawo ezahlukeneyo zomsebenzi ukuya kwii-athomu ze-radioactive.Amandla e-adsorption yomphezulu wesiphene mkhulu kunomphezulu oqhelekileyo, ngoko ke uba liziko elisebenzayo, elilungele i-nucleation ekhethiweyo, ebizwa ngokuba yi-heterogeneous nucleation.Xa amandla adibeneyo alingana namandla okubopha, okanye amandla okubopha phakathi kwe-athomu ye-membrane kunye ne-workpiece inkulu kunamandla okubambisana phakathi kwe-athomu ye-membrane, isakhiwo se-lamellar senziwe.Kwitekhnoloji ye-ion plating, undoqo wesiqithi wenziwa kwiimeko ezininzi.
2.Ukukhula
Emva kokuba i-core yefilimu yenziwe, iqhubeka ikhula ngokubambisa i-atom yesiganeko.Iziqithi zikhula kwaye zidibanise enye kwenye ukuze zenze i-hemispheres enkulu, ngokuthe ngcembe yenze i-hemispherical island layer that spread over the surface of workpiece.
Xa amandla e-athom yomaleko wefilimu iphezulu, inokusasaza ngokwaneleyo kumphezulu kwaye ifilimu eqhubekayo egudileyo inokusekwa xa amaqela alandelayo e-athom angenayo emancinci. amaqela adipozithiweyo makhulu, akhona njengeenuclei ezinkulu zepeninsular. Umphezulu wombindi wesiqithi unempembelelo enamandla yomthunzi kwinxalenye yeconcave, oko kukuthi “impembelelo yesithunzi”.Intelekelelo yomphezulu inceda ngakumbi ekubambeni iiathom ezifakwe emva koko. kunye nokukhula okukhethiweyo, okubangelwa iqondo elikhulayo le-concavity phezu komhlaba ukwenza i-crystals ye-conical okanye i-columnar yobukhulu obaneleyo.Ukungena kwe-voids kwenziwa phakathi kweekristale ze-conical kunye nexabiso le-roughness ye-surface liyakhuphuka.
Ixesha lokuposa: May-24-2023