Umaleko wefilimu kumthombo wokufudumeza umphunga wokufudumala ungenza amasuntswana enwebu ngendlela yeeathom (okanye iimolekyuli) kwisithuba sesigaba segesi. Ngaphantsi kobushushu obuphezulu bomthombo womphunga, iiathomu okanye iimolekyuli ezikumphezulu we-membrane zifumana amandla okwaneleyo okukoyisa ukuxinana komphezulu kunye nokuphuma komphunga kumphezulu. Ezi athom okanye iiathom ezikhutshiweyo zikhona kwindawo enegesi kwindawo engenanto, oko kukuthi isithuba sesigaba segesi. izinto zetsimbi okanye ezingezizo ezentsimbi.
Kwimeko ye-vacuum, iinkqubo zokufudumeza kunye ne-evaporation yezinto ze-membrane zingaphuculwa. Ubume be-vacuum bunciphisa impembelelo yoxinzelelo lwe-atmospheric kwinkqubo yokuguquka kwamanzi, okwenza inkqubo yokukhupha ibe lula ukuyiqhuba. Kuxinzelelo lwe-atmospheric, izinto ezifunekayo ziphantsi koxinzelelo olukhulu ukuze zinqobe ukuchasana kwegesi, kanti kwi-vacuum, oku kuxhathisa kuncitshiswe kakhulu, okwenza ukuba izinto zibe lula ukukhupha. Kwinkqubo yokugquma ubushushu, iqondo lobushushu kunye noxinzelelo lomphunga wesixhobo somthombo we-evaporation yinto ebalulekileyo ekukhetheni izinto zomthombo womoya. Kwi-Cd (Se, s) yokwambathisa, ubushushu bayo bokuba ngumphunga budla ngokuba kwi-1000 ~ 2000 ℃, ngoko ke kufuneka ukhethe umthombo wokuphuphuma kwemathiriyeli ngobushushu obufanelekileyo bomphunga. Okufana ne-aluminiyam kuxinzelelo lwe-atmospheric yobushushu bobushushu bobushushu obungama-2400 ℃, kodwa kwiimeko zevacuum, ubushushu bayo bokuphuma komphunga buhla kakhulu. Oku kungenxa yokuba akukho zimolekyuli ze-atmospheric kwisithintelo se-vacuum, ukuze ii-athomu ze-aluminiyam okanye iiathomu zibe ngumphunga ngokulula ukusuka phezulu. Lo mcimbi luncedo olubalulekileyo lwe-vacuum evaporation coating. Kwi-atmosphere ye-vacuum, i-evaporation yezinto zefilimu iba lula ukuyenza, ukwenzela ukuba iifilimu ezincinci zenziwe kumaqondo aphantsi. Eli qondo lobushushu lisezantsi linciphisa i-oxidization kunye nokubola kwezinto, ngaloo ndlela kube negalelo ekulungiseleleni iifilimu ezisemgangathweni ophezulu.
Ngexesha le-vacuum coating, uxinzelelo apho umphunga wezinto zefilimu ulingana kwisiqina okanye ulwelo lubizwa ngokuba luxinzelelo lomphunga wokugcwala kwelo qondo lobushushu. Olu xinzelelo lubonakalisa ulungelelwaniso oluguquguqukayo lokunyuka komphunga kunye nokujiya kwiqondo lobushushu elinikiweyo. Ngokuqhelekileyo, iqondo lokushisa kwezinye iindawo zegumbi lokucoca liphantsi kakhulu kunobushushu bomthombo wokufudumala, okwenza kube lula ukukhupha ii-athomu ze-membrane okanye iiathomu ukuba zidibanise kwezinye iindawo zegumbi. Kule meko, ukuba isantya somphunga sikhulu kunomlinganiselo wokujiya, ngoko kwi-equilibrium eguquguqukayo uxinzelelo lomphunga luya kufikelela kuxinzelelo lwe-saturation yomphunga. Oko kukuthi, kule meko, inani le-athomu okanye iiathomu eziphuphumayo zilingana nenani lokunyuswa, kwaye ukulingana okuguquguqukayo kufikeleleke.
–Eli nqaku likhutshwa nguumenzi womatshini wokugqumaGuangdong Zhenhua
Ixesha lokuposa: Sep-27-2024