Cov nyhuv ntawm Industrial Carbon Dub Ntxiv Rau Cov Khoom Ntawm Multiphase Bonded Silicon Carbide Refractories

Txhawm rau kawm txog cov txiaj ntsig ntawm kev lag luam carbon dub ntawm cov khoom ntawm cov khoom sib xyaw ua ke silicon carbide refractory, silica hais (3 ~ 1, 1 ~ 0.088 mm), hmoov zoo (<0.088 mm), silicon powder (<0.088 mm), industrial carbon black (grade N990), SiO2 powder (d50=0.26) were used The composite bonded silicon carbide samples were prepared by precasting and heat treatment at 1 400 ℃ in nitrogen atmosphere, and rho -Al2O3hmoov (d{{0}}}0μm) yog cov ntaub ntawv tseem ceeb. Cov khoom ntawm lub cev, theem muaj pes tsawg leeg thiab microstructure ntawm N990 cov qauv tau kawm ntawm qhov sib ntxiv (w) ntawm 2.5%, 3.0% thiab 3.5%. Cov txiaj ntsig tau pom raws li hauv qab no: 1) Nrog rau kev nce ntxiv ntawm N990 ntxiv, cov av nkos fluidity tau txhim kho, thiab kev tso tawm lub zog thiab ziab lub zog tau nce. 2) Nrog rau nce ntawm N990 ntxiv, lub pawv siab dawb thiab cov qauv ntom ntom thiab cov ntsiab lus hauv qab dawb, thiab -si3N4 tsawg zuj zus. 3) Nrog rau qhov nce ntawm N990, qhov sib xws ntawm microstructure ntawm cov qauv tom qab nitriding zuj zus vim qhov nce ntawm qhov tshwm sim ntawm cov pa roj carbon dub agglomeration. Si-C thiab Si-N reacted thiab sintered, thiab ntxiv rau kev nruam flocculation matrix, ntom kob-zoo li -SiC lossis O '-SiAlON theem tshwm sim hauv zos. Kev tsom xam pom tau hais tias cov qauv nrog cov ntsiab lus carbon dub (w) ntawm 3.0% tuaj yeem ua tau zoo dua cov kev xav tau ntawm kev npaj cov khoom thiab cov khoom.

Cov lus tseem ceeb:industrial carbon dub, multiphase bonded silicon carbide, casting molding, microstructure

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