Uhlalutyo oluneenkcukacha lomgaqo wokufudumeza wentonga yegrafiti

Uhlalutyo oluneenkcukacha lomgaqo wokufudumeza wentonga yegrafiti

Intonga yegrafiti idla ngokusetyenziswa njengesixhobo sokucocaisifudumezi sombane sesithando somoya esishushu kakhuluKulula ukuyi-oxidation kubushushu obuphezulu. Ngaphandle kwe-vacuum, ingasetyenziswa kuphela kwi-atmosphere engathathi hlangothi okanye kwi-atmosphere enciphisiweyo. Ine-coefficient encinci yokwanda kobushushu, i-thermal conductivity enkulu, ukumelana nobushushu obuphezulu, ukubanda okugqithisileyo kunye nobushushu obugqithisileyo, kunye nexabiso eliphantsi. Izinga le-oxidation kunye nezinga le-volatilization ye-graphite zichaphazela ubomi benkonzo yejenereyitha yobushushu. Xa indawo yokwenyani ingama-10-3 ~ 10-4 mmHg, ubushushu benkonzo kufuneka bube ngaphantsi kwama-2300 ℃. Kwi-atmosphere ekhuselayo (H2, N2, AR, njl.njl.), ubushushu benkonzo bunokufikelela kuma-3000 ℃. I-Graphite ayinakusetyenziswa emoyeni, kungenjalo iya ku-oxidation kwaye ityiwe. Isabela ngamandla nge-W engaphezulu kwe-1400 ℃ ukwenza ii-carbides.
Intonga yegrafiti yenziwe kakhulu yigrafiti, ngoko ke singayiqondaiimpawu zegraphite:
Iqondo lokunyibilika kwe-graphite liphezulu kakhulu. Iqala ukuthamba kwaye ithambekele ekunyibilikeni xa ifikelela kwi-3000C phantsi kwe-vacuum. Kwi-3600c, i-graphite iqala ukunyibilika kwaye inyibilike. Amandla ezinto eziqhelekileyo ayancipha kancinci kancinci xa kushushu kakhulu. Nangona kunjalo, xa i-graphite ishushu ukuya kwi-2000c, amandla ayo aphindwe kabini kunalawo kubushushu begumbi. Nangona kunjalo, ukumelana ne-oxidation kwe-graphite kuphantsi, kwaye izinga le-oxidation liyanda kancinci kancinci xa kushushu.
Ukuqhuba kwe-graphite kunye nokuqhuba kwe-thermal kuphezulu kakhulu. Ukuqhuba kwayo kuphindwe kane kunentsimbi engatyiwayo, kuphindwe kabini kunentsimbi yekhabhoni kwaye kuphindwe ka-100 kunentsimbi eqhelekileyo engeyiyo isinyithi. Ukuqhuba kwayo kwe-thermal akudluli nje kuphela kwezixhobo zesinyithi ezifana nentsimbi, isinyithi kunye ne-lead, kodwa kuyancipha ngokunyuka kobushushu, okwahlukileyo kwizinto zesinyithi eziqhelekileyo. I-Graphite ide ibe yi-adiabatic kubushushu obuphezulu kakhulu. Ke ngoko, ukusebenza kwe-thermal insulation ye-graphite kuthembekile kakhulu phantsi kweemeko zobushushu obuphezulu kakhulu.
Okokugqibela, sinokugqiba kwelokuba umgaqo wokufudumala weintonga yegrafayithiyi: okukhona umsinga wongezwa kwinduku yegrafiti, kokukhona ubushushu bomphezulu wenduku yegrafiti buphakama.