Yuav ua li cas kom tsis txhob muaj kev mob corrosion los ntawm kev ua kom haum muaj zog, yog li daws cov peev txheej kev nqis peev thiab cov txiaj ntsig nyuaj uas yuav tsum tau ua haujlwm ib sab. Ntau cov khoom muaj corrosion tsis kam tab sis tsis kub tsis kam, thaum muab daim npleg graphite muaj ob qho txiaj ntsig. Cov neeg ua plaub ntug hauv qab noNpaimQhia nthuav qhia kom nthuav dav cov flake graphite tuaj yeem daws cov teeb meem corrosion ntawm cov khoom siv:
1. Zoo heev thermal conductivity.Fig Kas graphiteKuj tseem muaj qhov zoo thermal conductivity, uas yog tib co nyom cov ntaub ntawv nrog ntau dua thermal conductivity tshaj li hlau, qeb thawj thawj ntawm cov ntaub ntawv tsis yog xim hlau. Lub thermal conductivity yog ob zaug uas cov pa roj carbon hlau thiab xya zaus uas hlau stainless. Yog li ntawd, nws yog tsim rau cov khoom siv cua sov.
2. Zoo heev corrosion tsis kam. Ntau yam carbon thiab graphite tau zoo corrosion tsis kam rau txhua qhov kev xav ntawm fluoracic acid, thiab qhov kub thiab txias rau oxidize.
3, tiv taus ib qho kub thiab txias. Qhov kev siv kub ntawm daim ci graphite yog nyob ntawm ntau yam ntawm imprinnating cov ntaub ntawv. Piv txwv li, phenolic impregnated graphite tuaj yeem tiv taus 170-200 ℃, thiab yog tias muaj cov khoom siv uas ua kom haum rau 1750 ℃. Thaum phosphoric acid yog muab tso rau cov carbon thiab graphite, cov oxidation tiv thaiv carbon thiab graphite tuaj yeem hloov kho, thiab ua haujlwm tiag tiag kub yuav tau nce ntxiv.
4, cov saum npoo tsis yooj yim rau cov qauv. Qhov "affinity" ntawm Flake Graphite thiab feem ntau cov xov xwm yog qhov me me heev, yog li av tsis yooj yim rau kev ua raws li saum npoo. Tshwj xeeb tshaj yog siv nyob rau hauv cov cuab yeej ua hws thiab cov khoom siv lead ua.
Nws tuaj yeem pom tau tias cov cuab yeej nrog flake graphite muaj cov khoom siv corrosion zoo thiab siv tshuab lub cev thiab siv tau cov cuab yeej siv thiab siv tau dav hauv kev lag luam tshuaj.
Lub Sijhawm Post: Lub Tsib Hlis-15-2023