Yuav kom tiv thaiv kev puas tsuaj los ntawm kev xeb los ntawm kev oxidation ntawm flake graphite ntawm qhov kub siab, nws yog qhov tsim nyog los nrhiav cov khoom siv los muab ib lub tsho rau ntawm cov khoom kub siab, uas tuaj yeem tiv thaiv flake graphite los ntawm kev oxidation ntawm qhov kub siab. Txhawm rau nrhiav hom flake graphite anti-oxidation tsho tiv no, peb yuav tsum xub tiv taus qhov kub siab thiab compactness.
Zoo, zoo corrosion tsis kam, muaj zog oxidation tsis kam, siab hardness thiab lwm yam ntxwv. Cov hauv qab no Furuite Graphite Xiaobian qhia cov hau kev los tiv thaiv flake graphite los ntawm kev oxidized ntawm qhov kub siab:
1. Siv cov ntaub ntawv nrog lub zog vapor tsawg dua 0.1333MPa (1650 * C) thiab kev ua tau zoo.
2. Xaiv cov khoom siv iav theem uas ua tau raws li qhov yuav tsum tau ua raws li cov khoom siv kaw tus kheej, thiab ua kom nws dhau los ua cov khoom siv kaw qhov tawg ntawm qhov kub ua haujlwm.
3. Raws li lub zog dawb txheem ntawm cov tshuaj tiv thaiv nrog oxygen nrog qhov kub thiab txias, ntawm qhov kub thiab txias ntawm steelmaking (1650-1750 * C), cov ntaub ntawv uas muaj kev sib raug zoo rau oxygen ntau dua li carbon-oxygen raug xaiv los ntes cov pa oxygen, yog li ntawd kom oxidize lawv tus kheej thiab tiv thaiv cov flake graphite. Tom qab oxidation, ib theem tshiab nrog qhov sib piv ntawm theem qub yog tsim.
Loj, uas yog pab tau los thaiv cov channel diffusion sab hauv ntawm cov pa oxygen thiab tsim ib qho oxidation barrier.
4. Thaum lub sijhawm ua haujlwm kub, ntau cov khoom suav nrog Al2O3, SiO2 thiab Fe2O3 hauv cov hlau molten tuaj yeem raug adsorbed, uas cuam tshuam nrog lawv tus kheej rau sinter, yog li ntau yam khoom suav nrog los ntawm cov hlau molten maj mam nkag mus rau hauv txheej.
Qhov kub oxidation ntawm flake graphite tsim tawm hauv Suav teb yog 560815 ° C thaum cov ntsiab lus carbon yog 88% 96% thiab qhov loj me ntawm cov khoom me me yog ntau dua 400 meshes. Ntawm lawv, thaum qhov loj me ntawm graphite yog 0.0970.105mm, qhov kub oxidation ntawm graphite nrog ntau dua 90% cov ntsiab lus carbon yog 600815 ° C thiab cov ntsiab lus carbon tsawg dua 90%.
Qhov kub ntawm oxidation ntawm number case yog 620790 C. Qhov zoo dua ntawm crystalline flake graphite yog, qhov siab dua qhov kub ntawm oxidation peak yog, thiab qhov tsawg dua qhov hnyav oxidation poob ntawm qhov kub siab.
Lub sijhawm tshaj tawm: Lub Peb Hlis-20-2023