Graphite wezwa

I-graphite izwakala ihlukaniswe nge-pitch-based graphite wezwa, i-polyacrylonitrile-based (PAN-based) graphite yezwa, kanye ne-viscose-based graphite yezwa ngenxa yokukhetha okwehlukile kwama-original felts. Inhloso enkulu ukuthi isetshenziswe njengokulondolozwa kokushisa nezinto zokwakha ukushisa kwamakhemikhali e-monocrystalline silicon smelting. Embonini yamakhemikhali, ingasetshenziswa njengezinto zokuhlunga zama-reagents amakhemikhali abola kakhulu.

I-Carbon izwa ukuthi i-graphite izwakale ngemuva kokuphathwa ezingeni lokushisa eliphakeme elingaphezu kuka-2000 ℃ ngaphansi komshini noma emoyeni. Okuqukethwe kwekhabhoni kuphakeme kunalokho okuzwayo kwekhabhoni, kufinyelela ngaphezu kuka-99%. Ekupheleni kweminyaka yama-1960, i-graphite yazizwa isivele itholakala emhlabeni. I-graphite izwakala ihlukaniswe nge-pitch-based, i-polyacrylonitrile-based graphite yezwa futhi i-viscose-based graphite yezwa ngenxa yokukhethwa okuhlukile kwemizwa yokuqala.

Phakathi kwabo, i-asphalt emelwe yiKureha Chemical yaseJapan iyona evame kakhulu embonini yokufaka izinto [2], abantu baseYurophu nabaseMelika behlukanisa izinto ngokunamathela, kuyilapho iningi laseChina lisebenzisa i-polyacrylonitrile njengezinto zokusetshenziswa. Inqubo: Sika i-polyacrylonitrile-based carbon wezwa noma i-viscose-based carbon wezwa ngosayizi odingekayo, uyigoqe ibe yishubhu bese uyifaka esitsheni esenziwe ngezinto ze-graphite, bese ufaka isitsha se-graphite esithandweni esinokushisa okuphezulu (okuphezulu Isithando somlilo siyisithando somhubhe we-graphite, imvamisa emaphakathi, isithando somlilo esisezingeni eliphakeme kakhulu noma ezinye iziko lokushisa okuphezulu ezinezindlela zokushisa), ezivikelwe nge-vacuum noma nge-high-purity gas inert, evuthiswe ku-2200-2500 ° C ngezinga lokushisa ka-100-300 ° C / h, bese epholile ngokwemvelo yaya ku-100 ° C.

I-graphite izwa inamandla futhi inokumelana okuqinile kwe-oxidation, kepha inokuguquguquka okuncane, ukuqina okukhulu kwenqwaba nokusebenza okuhle kokulondolozwa kokushisa. Ngaphezu kwezimpawu zokuhlanzeka okuphezulu, ukumelana nokushisa okuphezulu, ukumelana nokugqwala, nokungancibiliki kwe-block graphite, futhi zinezinzuzo zokunwebeka, ukusonga ngokungafanele, ukusika nokuthunga ngentambo ye-graphite. Inhloso eyinhloko ye-graphite wezwa njengokulondolozwa kokushisa nezinto zokuvikela ukushisa zesisindo somlilo esisodwa se-crystal silicon. Embonini yamakhemikhali, ingasetshenziswa njengezinto zokuhlunga zama-reagents amakhemikhali abola kakhulu. I-graphite izwakala ingasetshenziswa ekushiseni okungaba ngu-3000 ° C endaweni engeyona i-oxidizing.