Cov tswv yim rau kev tshem tawm cov impurities ntawm graphite hmoov

Graphite crucible feem ntau siv rau hauv kev tsim cov hlau thiab cov ntaub ntawv semiconductor. Yuav kom ua rau cov hlau thiab cov ntaub ntawv semiconductor mus txog qee qhov kev huv thiab txo cov khoom tsis huv, yuav tsum muaj hmoov graphite nrog cov pa roj carbon ntau thiab cov khoom tsis huv. Lub sijhawm no, nws yog qhov tsim nyog los tshem tawm cov khoom tsis huv ntawm hmoov graphite thaum lub sijhawm ua tiav. Ntau tus neeg siv khoom tsis paub yuav ua li cas nrog cov khoom tsis huv hauv hmoov graphite. Niaj hnub no, Furuite Graphite Editor yuav tham txog cov lus qhia rau kev tshem tawm cov khoom tsis huv hauv hmoov graphite kom meej:

Thaum tsim cov hmoov graphite, peb yuav tsum tswj cov khoom siv raw kom tsis txhob muaj cov khoom tsis huv, xaiv cov khoom siv raw uas muaj cov tshauv tsawg, thiab tiv thaiv kom tsis txhob muaj cov khoom tsis huv ntau ntxiv thaum ua cov hmoov graphite. Cov oxides ntawm ntau yam khoom tsis huv yuav lwj tas li thiab yaj tas li ntawm qhov kub siab, yog li ua kom cov hmoov graphite huv.

Thaum tsim cov khoom siv graphite dav dav, qhov kub ntawm lub hauv paus ntawm lub cub tawg ncav cuag li 2300 ℃ thiab cov khoom seem tsis huv yog li 0.1% -0.3%. Yog tias qhov kub ntawm lub hauv paus ntawm lub cub tawg nce mus txog 2500-3000 ℃, cov khoom seem tsis huv yuav raug txo qis heev. Thaum tsim cov khoom siv hmoov graphite, roj av coke uas muaj cov tshauv tsawg feem ntau yog siv ua cov khoom tiv taus thiab cov khoom rwb thaiv tsev.

Txawm hais tias qhov kub ntawm graphite tsuas yog nce mus txog 2800 ℃, qee qhov tsis huv tseem nyuaj rau tshem tawm. Qee lub tuam txhab siv cov txheej txheem xws li lub hauv paus ntawm lub cub tawg thiab nce qhov ceev tam sim no kom rho tawm cov hmoov graphite, uas txo cov zis ntawm lub cub tawg hmoov graphite thiab ua rau lub zog siv ntau dua. Yog li ntawd, thaum qhov kub ntawm lub cub tawg hmoov graphite ncav cuag 1800 ℃, cov roj ntshiab, xws li chlorine, freon thiab lwm yam chlorides thiab fluorides, raug qhia, thiab nws txuas ntxiv mus ntxiv rau ob peb teev tom qab lub zog tsis ua haujlwm. Qhov no yog los tiv thaiv cov khoom tsis huv uas tau ua pa los ntawm kev sib kis mus rau hauv lub cub tawg hauv qhov kev taw qhia rov qab, thiab kom tshem tawm cov roj ntshiab seem ntawm cov qhov ntawm cov hmoov graphite los ntawm kev qhia qee cov nitrogen.