Cov oxidation tsis kam ntawm graphiticate roj av yog ib qho ntawm nws cov kev ua tau zoo tshaj plaws, cuam tshuam rau nws lub neej thiab kev pabcuam lub neej nyob hauv ib puag ncig.
Cov hauv qab no piav qhia txog qhov cuam tshuam oxidation tsis kam thiab yuav ua li cas txhim kho nws:
Qhov tseem ceeb cuam tshuam rau oxidation tsis kam:
1. Degree ntawm Graphitization
Qhov siab dua qib ntawm graphitization (kev ua ib txwm muaj ntawm cov pa roj carbon atoms thiab cov me dua cov interlayer nrug), tus muaj zog dua oxidation tsis kam. Qhov no yog vim tias cov qauv siv lead ua tsis tu ncua yog qhov tsis tshua muaj pa oxygen, thaum cov pa roj carbon monoxestioned) feem ntau raug rau oxidation.
2. Cov ntsiab lus impred
Hlau oxides (Fe, Ni, V, thiab lwm yam): Ua yeeb yam ua cov tshuaj tua kab, lawv txo qhov kev ua kom muaj zog ntawm cov pa roj carbon oxidation thiab nrawm oxidation. Yog li ntawd, graphitized roj coke nrog cov hmoov tshauv qis (tsawg dua impurities) ua rau pom kev loj dua oxidation.
Cov ntsiab lus Sulfur: Cov kab mob Sulphur yuav ua rau muaj kev kub ntxhov, tsis ncaj ncees txhawb cov pa roj oxidation. Yog li ntawd, qis {{{{-}}}}} sulfur khoom tshwm sim zoo dua oxidation tsis kam.
3. Paus taus loj thiab thaj chaw tshwj xeeb
Qhov me me qhov me me thiab qhov loj dua qhov chaw tshwj xeeb thaj tsam, qhov chaw tiv tauj ntau dua nrog cov pa oxygen, ua rau nws muaj kev cuam tshuam rau oxidation ntau dua. Yog li ntawd, ntxhib {{{1} nplej graphitized roj av roj ceke muaj zog oxidation tsis kam zoo dua li hmoov zoo.
4. Porosity
Cov khoom lag luam uas muaj cov hws tauj sab hauv ntxiv rau cov pa oxygen kom nkag mus rau qhov yooj yim dua, nrawm oxidation. Yog li ntawd, graphitized roj coke nrog tus qauv tuab tau muaj oxidation zoo dua.
Cov hau kev rau kev txhim kho oxidation tsis kam:
1. Nce qib ntawm graphitization
Siab -} pa taws graphitization (saum ntuj 2800 degree) txo cov qauv crystal, thiab txhim kho cov oxidation tsis kam.
2. Cov txheej saum npoo
Ua ntawv thov cov tshuaj antioxidant (xws li sic lossis al₂o₃) rau saum npoo ntawm graphitized roj av, tiv thaiv oxygen los ntawm kev hu rau cov pa roj carbon. Cov qauv no tau siv dav hauv electrolytic txhuas anodes thiab refractory cov ntaub ntawv.
3. Doping
Ntxiv ib qho me me ntawm cov antioxidant (xws li boron thiab silicon) siv cov duab yeeb yaj kiab ruaj khov rau ntawm cov khoom siv oxidation.
4. Particle loj tswj thiab densification
Xaiv qhov tsim nyog qhov loj me (zam dhau kev ua kom zoo tshaj plaws) thiab txo qhov porosity los ntawm cov txheej txheem xws li molding thiab sintering kom txo cov pa oxygen page.
Cov khoom siv tshuaj antioxidant ntawm graphitized roj coke nyob ruaj khov rau nws cov kev ua kom nruj thiab porposity), uas ncaj qha cuam tshuam rau qhov siab rau qhov siab- Cov ntawv thov kub. Hauv kev siv cov tswv yim, cov khoom siv raw, lossis kev hloov kho tshiab, ib puag ncig yuav tsum tau ua kom muaj kev ua haujlwm los sib xyaw ua ke, kom tau nyiaj li cas, kom tau raws li cov kev xav tau ntawm cov ntawv thov sib txawv.
