Evaporation Txheej

Lub evaporation txheej

Lub evaporation ntawm ib yam khoom los ntawm tshav kub kom tso rau ntawm ib tug khoom nto yog hu ua evaporative txheej. Txoj kev no yog thawj zaug los ntawm M. Faraday hauv xyoo 1857 thiab tau dhau los ua ib qho ntawm cov txheej txheem siv ntau tshaj plaws nyob rau niaj hnub no.
evaporating cov ntaub ntawv xws li hlau thiab cov tebchaw yog muab tso rau hauv lub crucible los yog dai ntawm lub kub hlau raws li lub evaporation qhov chaw, thiab lub workpiece, xws li hlau, ceramic, yas, thiab lwm yam substrates yog muab tso rau pem hauv ntej ntawm lub crucible. Tom qab lub kaw lus yog pumped mus rau lub tshuab nqus tsev siab, lub crucible yog rhuab kom evaporate cov khoom nyob rau hauv nws. Atoms los yog molecules ntawm evaporating khoom yog tso rau ntawm lub substrate nto los ntawm condensation. Cov zaj duab xis thickness yog txiav txim los ntawm tus nqi evaporation thiab lub sij hawm ntawm qhov chaw (los yog tus nqi ntawm cov nqi) thiab los ntawm qhov deb ntawm qhov chaw thiab lub substrate. Rau thaj tsam loj txheej, rotating substrate los yog ntau qhov chaw evaporation feem ntau yog siv los xyuas kom meej lub uniformity ntawm zaj duab xis thickness. Qhov kev ncua deb ntawm evaporation qhov chaw mus rau lub substrate yuav tsum tsawg tshaj li qhov nruab nrab txoj kev dawb ntawm cov vapor molecules nyob rau hauv cov roj seem, yog li kom tsis txhob muaj kev sib tsoo ntawm cov vapor molecules nrog cov roj seem molecules ua rau muaj tshuaj lom neeg.

Muaj peb hom evaporation qhov chaw. (1) Resistance cua sov qhov chaw: refractory hlau xws li tungsten, tantalum ua los ntawm nkoj foil los yog filamentous, los ntawm cov tam sim no, cua sov nyob rau hauv lub saum toj no los yog muab tso rau hauv lub crucible ntawm evaporating tshuaj tiv thaiv cua sov qhov chaw yog tsuas yog siv rau evaporation Cd, Pb, Ag. , Al, Cu, Cr, Au, Ni, thiab lwm yam ntaub ntawv; (2) high-frequency induction cua sov qhov chaw: lub cua sov crucible thiab evaporating khoom nrog high-frequency induction tam sim no; (3) Electron beam cua sov qhov chaw: haum rau siab evaporation kub ntawm cov khoom, uas yog, electron beam bombardment ntawm cov khoom kom nws evaporate.
Piv nrog rau lwm txoj hauv kev nqus cov txheej txheem, evaporation txheej muaj qhov tso nyiaj ntau dua thiab tuaj yeem siv los tsim cov yeeb yaj kiab yooj yim thiab refractory compound.

IKS PVD tuam txhab, kho kom zoo nkauj txheej tshuab, cuab yeej txheej tshuab, DLC txheej tshuab, kho qhov muag txheej tshuab, PVD nqus txheej kab, txoj haujlwm tig-key yog muaj. Tiv tauj peb tam sim no, E-mail:iks.pvd@foxmail.com