Zaj duab xis txheej evaporation kub thiab vapor siab

Zaj duab xis txheej nyob rau hauv lub evaporation qhov chaw ntawm cua sov evaporation yuav ua rau cov membrane hais nyob rau hauv daim ntawv ntawm atoms (los yog molecules) mus rau hauv lub gas theem. Nyob rau hauv qhov kub ntawm qhov evaporation qhov chaw, cov atom los yog molecules nyob rau saum npoo ntawm daim nyias nyias tau txais lub zog txaus los kov yeej qhov nro thiab evaporate los ntawm qhov chaw. Cov evaporated atoms lossis molecules muaj nyob rau hauv lub xeev gaseous hauv lub tshuab nqus tsev, piv txwv li qhov chaw roj. metallic los yog non-metallic cov ntaub ntawv.

Hauv ib puag ncig lub tshuab nqus tsev, cov txheej txheem cua sov thiab evaporation ntawm cov ntaub ntawv membrane tuaj yeem txhim kho. Lub tshuab nqus tsev ib puag ncig txo cov nyhuv ntawm atmospheric siab ntawm cov txheej txheem evaporation, ua rau cov txheej txheem evaporation yooj yim dua. Ntawm atmospheric siab, cov khoom yuav tsum tau raug siab dua kom kov yeej cov roj kuj, whereas nyob rau hauv lub nqus tsev vacuum, qhov no kuj yog heev txo, ua rau cov khoom yooj yim rau evaporate. Hauv cov txheej txheem evaporation txheej txheem, evaporation kub thiab vapor siab ntawm cov khoom siv evaporation yog qhov tseem ceeb hauv kev xaiv cov khoom siv evaporation. Rau Cd (Se, s) txheej, nws cov evaporation kub feem ntau yog nyob rau hauv 1000 ~ 2000 ℃, yog li koj yuav tsum xaiv cov khoom siv evaporation nrog qhov kub thiab txias. Xws li txhuas ntawm atmospheric siab evaporation kub ntawm 2400 ℃, tab sis nyob rau hauv lub tshuab nqus tsev, nws evaporation kub yuav poob ho. Qhov no yog vim tsis muaj atmospheric molecules nyob rau hauv lub tshuab nqus tsev vacuum, yog li ntawd cov txhuas atoms los yog molecules yuav yooj yim evaporated los ntawm qhov chaw. Qhov tshwm sim no yog ib qho tseem ceeb kom zoo dua rau lub tshuab nqus tsev evaporation txheej. Nyob rau hauv lub tshuab nqus tsev, cov evaporation ntawm cov ntaub ntawv zaj duab xis yuav ua tau yooj yim mus nqa tawm, thiaj li hais tias nyias films yuav tsim nyob rau hauv qis kub. Qhov ntsuas kub qis no txo ​​oxidization thiab decomposition ntawm cov khoom, yog li ua rau kev npaj ntawm cov yeeb yaj kiab zoo dua.
Thaum lub tshuab nqus tsev txheej, lub siab uas cov vapors ntawm cov khoom siv zaj duab xis sib npaug hauv cov khoom lossis kua yog hu ua saturation vapor siab ntawm qhov kub. Qhov siab no qhia txog qhov sib npaug ntawm cov evaporation thiab condensation ntawm qhov kub thiab txias. Feem ntau, qhov kub ntawm lwm qhov ntawm lub tshuab nqus tsev yog qis dua qhov kub ntawm cov evaporation qhov chaw, uas ua rau nws yooj yim rau evaporating membrane atoms los yog molecules kom condense nyob rau hauv lwm qhov chaw ntawm lub chamber. Nyob rau hauv cov ntaub ntawv no, yog hais tias tus nqi ntawm evaporation ntau tshaj tus nqi ntawm condensation, ces nyob rau hauv dynamic equilibrium lub vapor siab yuav ncav cuag saturation vapor siab. Ntawd yog, qhov no, tus naj npawb ntawm atom lossis molecules evaporating yog sib npaug rau tus lej condensing, thiab dynamic equilibrium mus txog.

– Zaj lus no yog tso tawm los ntawmtshuab nqus tsev txheej tshuab manufacturersGuangdong Zhenhua