Resistance cua sov evaporation qhov qauv yog qhov yooj yim, siv tau yooj yim, yooj yim ua, yog qhov dav siv ntau tshaj ib hom evaporation qhov chaw. Cov neeg feem ntau hu ua lub tshuab hluav taws xob cua sov lossis lub nkoj evaporation.
Cov cua kub qhov yuav tsum tau ua ntawm cov khoom siv tiv thaiv yog: kub, tiv taus, tsis tshua muaj vapor siab ntawm qhov kub thiab txias, tsis muaj tshuaj lom neeg cov tshuaj tiv thaiv nrog cov khoom siv membrane, tsis tsim tawm thiab ua paug. Xaiv cov khoom siv cua sov los ntawm cov hlau refractory, xws li W, Mo, Ta thiab lwm yam ntaub ntawv los yog xaiv cov high-purity, high-strength graphite los yog boron nitride hluavtaws conductive ceramics thiab lwm yam ntaub ntawv. Qee zaum, kuj tuaj yeem xaiv Fe, Ni, Ni-Cr alloy thiab Pt ua cov khoom siv evaporation.
Ntau yam kev tiv thaiv cua sov evaporation qhov chaw ntawm cov khoom siv (xws li Ti, Mo, C, Ta, W, thiab lwm yam) ntawm lub melting point thiab vapor siab thiab kub kev sib raug zoo nkhaus yog txawv. Ntawm lawv, tungsten ua nkig thaum rhuab mus rau qhov kub ntawm evaporation vim yog cov khoom siv hluav taws xob sib txuas. Molybdenum, ntawm qhov tod tes, nws txawv ntawm purity, nrog rau qee qhov ua nkig thiab lwm tus tsis. Tungsten reacts nrog dej vapor los tsim cov pa oxygen tsis haum WO3.
Yog li ntawd, thaum tungsten yog rhuab nyob rau hauv residual dej vapor, cov rhuab khoom yog tsis tu ncua depleted. Thaum cov roj residual siab tsawg, tsis muaj ntau cov khoom poob, tab sis nws yog ib qho kev sib kis loj ntawm daim nyias nyias.
Kev siv cov khoom siv filamentary yuav tsum tau them sai sai rau qhov ntub dej ntawm cov hlau kub ntawm cov khoom siv membrane. Piv txwv li, kub hlau kub kub nce sai heev, cov khoom siv membrane tsis yooj yim rau tam sim ntawd yaj tag nrho cov ntaub ntawv membrane thiab kub hlau wetting tsis txaus. Yog li ntawd, cov zaj duab xis unmelted yuav poob tawm ntawm lub pob tawb hlau. Nyob rau tib lub sijhawm, qhov kub thiab txias siab dhau yuav ua rau cov khoom siv membrane hauv cov pa tso tawm sai sai, ua rau muaj npuas los yog txaws, qhov tshwm sim yuav ua rau tsim cov tee me me lo rau hauv substrate. Yog li ntawd, cov khoom siv filament yuav tsum tau siv nrog kev tswj qhov kub thiab txias.
Lub ntsiab tsis zoo ntawm cov pob tawb hlau, conical coils los yog kauv coils yog tias cov khoom siv zaj duab xis txhawb nqa me me dhau, thiab qhov no yuav ua rau qhov kub ntawm cov hlau kub nce siab vim tias cov khoom siv zaj duab xis txo qis tom qab cov khoom siv zaj duab xis yog evaporated, yog li ua rau evaporation tus nqi nce. Qhov no kuj yog ib qho teeb meem uas yuav tsum tau muab sau tseg rau cov txheej txheem ua zaj duab xis uas yuav tsum tau nruj tswj hwm tus nqi evaporation.
(2) Lub hauv paus ntsiab lus kev ua haujlwm thiab cov qauv tsim thiab siv cov yam ntxwv
Resistance cua sov evaporation qhov chaw, qhov tseeb, yog cov cua sov tiv thaiv nws yog kev siv lub tshuab hluav taws xob los yog lub nkoj evaporation ncaj qha energized, kom cov tam sim no los ntawm ib tug loj tus naj npawb ntawm Joule tshav kub thiab tau kub kub rau yaj hlau zaj duab xis cov ntaub ntawv, thiaj li hais tias nws evaporation ntawm ib hom ntawm evaporation qhov chaw.
– Zaj lus no yog tso tawm los ntawmtshuab nqus tsev txheej tshuab manufacturersGuangdong Zhenhua
Post lub sij hawm: Feb-23-2024