Electrolytic capacitor cov ntaub ntawv thiab cov txheej txheem
Oct 14, 2019|
Nyob ruaj ntseg nrog SChitec
Electrolytic capacitor cov ntaub ntawv thiab cov txheej txheem
khoom
Aluminium ntawv ci siv tam sim no yog heev elegant nyob rau hauv muaj pes tsawg leeg thiab qauv. High purity tsis tas yuav tsum tau, piv txwv li, rau anode foils, uas yuav tsum tau muaj siab purity. Txhawm rau txhim kho qhov pib corrosion, txhua yam muaj zog thiab cov khoom ntawm dielectric oxide zaj duab xis, cov ntawv ci yuav tsum muaj qee qhov impurities. Thiab qee qhov siv cov ntawv hlau alloy. Nyob rau hauv cov nqe lus ntawm cov qauv, rau cov tsis tshua muaj siab foils, qhov feem pua ntawm cov cubic qauv tsis yog yuav tsum tau loj, tab sis rau high-pressure foils, cov qauv no yuav tsum tau account rau 80% mus rau 90%. Rau cathode ntawv ci. Txhawm rau ua kom cov ntim tshwj xeeb ntawm qhov ntawd, ib qho txhuas txhuas ntawv ci uas muaj qee yam ntawm cov impurities uas muaj qhov sib txawv ntawm cov pob zeb siv lead ua yog xav tau. Cov electrolyte ua haujlwm muaj peb yam. Ntawd yog, cov kuab tshuaj, cov kuab tshuaj, thiab cov khoom ntxiv, xws li electrolytes uas tau siv rau lub sijhawm ntev, muaj cov ethylene glycol, glycerin, boric acid, thiab aqueous ammonia. Vim yog kev txhim kho ntawm txhuas electrolytic capacitors, cov electrolyte no nyob deb ntawm qhov txaus siab, yog li muaj ntau cov electrolytes tshiab tau tsim los txo cov kev khiav hauj lwm kub ntawm lub capacitor (xws li -55 degree C - 125 degree C). Lub hauv paus ntsiab lus ntawm kev tsim cov electrolytes tshiab no yog: 1 tov nrog ob lub kuab tshuaj. Ua kom tiav complementarity. 2 Ob lub acids tsis muaj zog yog siv los muab ob pawg anionic xav tau. 3 ntxiv alkali, xws li cov organic amine, los kho cov pH thiab flash voltage ntawm electrolyte. Hloov nws resistivity. 4 Additives uas txhim kho cov yam ntxwv ntawm cov electrolyte, xws li phosphoric acid los yog ntsev, uas tiv thaiv hydration ntawm aluminium oxide zaj duab xis, dinitrobenzene uas absorbs hydrogen, thiab lwm yam, thiab ib tug ethylene oxide uas tsa lub flashover voltage ntawm lub electrolyte.
Txheej txheem
Ntxiv nrog rau kev siv tshuab thiab automation ntawm ntau lawm, kev nce qib ntawm txhuas electrolytic capacitors nyob rau hauv cov txheej txheem yog tsuas yog ob txheej txheem ntawm corrosion thiab energization. Lub corrosion coefficient ntawm txhuas ntawv nyiaj tsis yog siab xwb (tsawg-voltage capacitor ntawv ci tau mus txog 100, lub siab voltage yog mus txog 25), thiab txhuas ntawv ci nrog txawv pothole morphology yuav etched raws li kev ua tau zoo ntawm lub capacitor. Cov txheej txheem etching yog ib hom corrosive kua hom, concentration, kub, thawj cov ntawv ci muaj pes tsawg leeg, qauv, lub xeev nto, ntawv ci ceev thaum corrosion, thiab dynamic tshuav txheej txheem ntawm lub hwj chim qhov chaw, waveform, zaus, voltage, thiab lwm yam. kom tau qhov zoo tshaj plaws dynamic tshuav nyiaj li cas thiab yuav ua li cas los txiav txim qhov zoo tshaj plaws tshuav nyiaj li cas raws li qhov yuav tsum tau. Yog li ntawd, nws tsis tuaj yeem hais tias cov txheej txheem corrosion tau mus txog lub xeev zoo.
Cov txheej txheem energization tam sim no muaj peev xwm tsim tau zoo dielectric oxide zaj duab xis, thiab sib txawv dielectric oxide zaj duab xis tuaj yeem tsim raws li qhov xav tau sib txawv. Piv txwv li, rau DC capacitors, thiab '-type crystalline aluminium oxide films yog fabricated, thiab kev sib pauv yog ua. Lub capacitor yog amorphous zaj duab xis. Qhov kev nce qib loj tshaj plaws hauv cov txheej txheem energization yog lub peev xwm los hloov cov yeeb yaj kiab aluminium hydroxide rau hauv dielectric aluminium oxide zaj duab xis thiab tsim ib txheej dej-repellent rau saum npoo. Tsis tas li ntawd, cov teeb meem thiab cov kab nrib pleb hauv cov yeeb yaj kiab dielectric tuaj yeem raug tshem tawm.