Ukuhlaziywa okuningiliziwe kwesimiso sokushisa senduku ye-graphite

Ukuhlaziywa okuningiliziwe kwesimiso sokushisa senduku ye-graphite

Induku ye-graphite ivame ukusetshenziswa njenge-isifudumezi sikagesi sesithando sokushisa esiphezuluKulula ukuyi-oxidation ekushiseni okuphezulu. Ngaphandle kwe-vacuum, ingasetshenziswa kuphela emoyeni ongathathi hlangothi noma emoyeni onciphisayo. Ine-coefficient encane yokwanda kokushisa, ukuhanjiswa okukhulu kokushisa, ukumelana nokushisa okuphezulu, ukubanda okukhulu nokumelana nokushisa okukhulu, kanye nentengo ephansi. Izinga loku-oxidation kanye nezinga lokuwohloka kwe-graphite kuthinta impilo yesevisi yejeneretha yokushisa. Uma isikhala sangempela singu-10-3 ~ 10-4 mmHg, izinga lokushisa lesevisi kufanele libe ngaphansi kuka-2300 ℃. Emoyeni ovikelayo (H2, N2, AR, njll.), izinga lokushisa lesevisi lingafinyelela ku-3000 ℃. I-Graphite ayikwazi ukusetshenziswa emoyeni, ngaphandle kwalokho izo-oxidation futhi idliwe. Isabela ngamandla nge-W engaphezu kuka-1400 ℃ ukuze yakhe ama-carbide.
Induku ye-graphite yakhiwe kakhulu yi-graphite, ngakho-ke singakuqonda futhiizici ze-graphite:
Iphuzu lokuncibilika kwe-graphite liphezulu kakhulu. Liqala ukuthamba futhi livame ukuncibilika uma lifika ku-3000C ngaphansi kwe-vacuum. Ku-3600c, i-graphite iqala ukuhwamuka futhi incibilike. Amandla ezinto ezijwayelekile ancipha kancane kancane ekushiseni okuphezulu. Kodwa-ke, uma i-graphite ishiswa ku-2000c, amandla ayo aphindwe kabili kunalawo ekushiseni kwegumbi. Kodwa-ke, ukumelana kwe-oxidation kwe-graphite kubi, futhi izinga le-oxidation liyakhula kancane kancane ngokukhuphuka kwezinga lokushisa.
Ukushisa kanye nokushisa kwe-graphite kuphakeme impela. Ukushisa kwayo kuphakeme ngokuphindwe kane kunensimbi engagqwali, kuphakeme ngokuphindwe kabili kunensimbi yekhabhoni kanye nokuphindwe kayi-100 kunensimbi evamile engeyona eyensimbi. Ukushisa kwayo akudluli nje kuphela okwezinto zensimbi ezifana nensimbi, insimbi kanye nomthofu, kodwa futhi kwehla ngokwanda kwezinga lokushisa, okuhlukile ezintweni zensimbi ezijwayelekile. I-Graphite ivame ukuba yi-adiabatic ekushiseni okuphezulu kakhulu. Ngakho-ke, ukusebenza kokushisa kwe-graphite kuthembekile kakhulu ngaphansi kwezimo zokushisa eziphakeme kakhulu.
Ekugcineni, singaphetha ngokuthi isimiso sokushisa seinduku ye-graphiteyilokhu: uma ugesi ungeziwe endukwini ye-graphite, kulapho izinga lokushisa lobuso lenduku ye-graphite liphakama khona.