Ingqikithi yesithando sokukhulisa ikristalu esisodwa iyithuluzi elibalulekile ekukhiqizweni kwekristalu, futhi ukwakheka kwensimu yaso yokushisa kuthinta ngqo ubumsulwa kanye nekhwalithi yekristalu. Njengengxenye ephakathi yesithando somlilo, insimu yokushisa ye-graphite ehlanzekile kakhulu inikeza ukuhanjiswa kokushisa okuhle kakhulu, ukumelana nokushisa okuphezulu, kanye nokuqina kwamakhemikhali, okwenza sikwazi ukugcina ukusebenza okuzinzile ngaphansi kokushisa okukhulu.
Insimu yokushisa yakhiwe yiama-heater e-graphite, izitsha ze-graphite, amasilinda okushisa, nezinye izingxenye. Ngokulawula ngokunembile ukusatshalaliswa kwezinga lokushisa, kuqinisekisa ukufana kanye nokuvumelana kuyo yonke inqubo yokukhula kwekristalu. Le nkampani igxile ocwaningweni, ekuthuthukisweni, nasekukhiqizweni kwamasimu okushisa e-graphite ahlanzekile kakhulu, ihlinzeka ngezixazululo zokushisa ezisebenza kahle kakhulu zama-furnace okukhula kwekristalu elilodwa. Ngokuqukethwe kwekhabhoni okungu-≥99.9%, lawa masimu okushisa asetshenziswa kabanzi kuma-semiconductors, ama-photovoltaics, nakwezinye izimboni, ehlangabezana nezidingo eziqinile zamakristalu ahlanzekile kakhulu.
Ukusebenza okuphezulu kwamasimu okushisa e-graphite ahlanzekile kakhulu kuvela esakhiweni sawo esiyingqayizivele sekristalu kanye nobumsulwa obuphezulu. Emazingeni okushisa egumbi, izinto ezibonakalayo zibonisa isakhiwo esizinzile esinezingqimba lapho ama-athomu e-carbon akha khona amanethiwekhi ayisithupha ngokusebenzisa ama-orbital ahlanganisiwe e-sp², okunikeza ukuhanjiswa kukagesi nokushisa okuvelele. Ezindaweni ezishisa kakhulu, amasimu okushisa e-graphite ahlanzekile kakhulu angamelana namazinga okushisa angaphezu kuka-1600°C ngenkathi egcina ukuzinza kwamakhemikhali, evimbela ukusabela ngezinto ezifana ne-silicon encibilikisiwe.
Ngokuphathelene nokukhiqiza, inqubo ihlanganisa ukukhethwa kwezinto zokusetshenziswa, ukwakheka, ukuthungwa, kanye nokuhlanzwa. Izinto zokusetshenziswa ziyachotshozwa bese zigaywa zibe yimpuphu enobukhulu be-micron, kanti ukungcola okufana ne-sulfur kanye ne-metal oxides kususwa ngokuwasha nge-asidi. Ngesikhathi sokwakhiwa, izinto zenziwa ngendlela esebenzisa imishini yokucindezela noma ubuchwepheshe bokucindezela be-isostatic, lapho ukucindezela okungaphezu kuka-200 MPa kuthuthukisa ukuminyana kwezinto. Inqubo yokuthungwa yenzeka ezithandweni zokushisa okuphezulu ngaphezu kuka-2000°C, okuvumela ama-athomu e-carbon ukuthi ahlele kabusha futhi akhe isakhiwo sekristalu esihlelekile. Ukuhlanzwa kwenziwa endaweni engenawo umoya-mpilo okushisa okuphezulu ngokusebenzisa ukusabela kwe-carbonization, okwandisa okuqukethwe kwe-carbon kuze kube cishe ku-99.99%.
Ezisetshenzisweni ezisebenzayo, amasimu okushisa e-graphite ahlanzekile kakhulu abhekene nezinselele ezifana nokulawula izinga lokushisa kanye nokuqina kwezinto. Ngokwenza ngcono ukwakheka kwensimu yokushisa—njengokulungisa ukusatshalaliswa kwamandla kwezinto zokushisa kanye nokuthuthukisa ukwakheka kwesistimu yokupholisa—ukulawulwa okunembile kwama-gradient okushisa kungafinyelelwa, ngaleyo ndlela kuthuthukiswe ikhwalithi yokukhula kwekristalu. Isibonelo, ukusetshenziswa kwezinto zokushisa ezinezingqimba eziningi kanye nokuhlelwa kwamapayipi okupholisa okwenziwe ngcono kunciphisa ukulahleka kokushisa futhi kuthuthukisa ukusebenza kahle kokushisa. Ukuqina kungathuthukiswa ngokwengeziwe ngobuchwepheshe bokwelashwa kwendawo; izembozo ze-silicon carbide, isibonelo, zingandisa ukumelana nokugqwala ngokuphindwe kathathu, kwandise impilo yenkonzo yensimu yokushisa. Lokhu kuthuthuka kobuchwepheshe kuqinisekisa ukusebenza okuzinzile ngaphakathi kwesithando sokukhulisa ikristalu eyodwa futhi kuthuthukise ubumsulwa bekristalu kanye nokuvumelana, kuhlangatshezwane nezidingo eziqinile zezimboni ze-semiconductor kanye ne-photovoltaic.
Njengengxenye eyinhloko yezitofu zokukhula kwekristalu elilodwa, ukusebenza kwamasimu okushisa e-graphite ahlanzekile kakhulu kunquma ngqo ikhwalithi yekristalu kanye nokusebenza kahle kokukhiqiza. Ngokuthuthuka okuqhubekayo kwezobuchwepheshe, izinqubo zokukhiqiza ziyaqhubeka nokuthuthuka futhi izakhiwo zezinto zithuthukiswa njalo. Ubuchwepheshe bokuhlanza okuluhlaza—njengokunciphisa i-methanol solvent vapor-phase kanye nezindlela zokunciphisa i-hydrothermal—akuvimbeli nje kuphela ukungcoliswa kwemvelo kodwa futhi kuvumela ukukhiqizwa okukhulu. Izinto ezihlanganisiwe, kufaka phakathi i-silicon carbide-reinforced ceramic matrix composites, sezibe yizindawo zokucwaninga ngenxa yokuzinza kwazo okuhle kakhulu kokushisa kanye nezakhiwo zemishini. Okwamanje, ukusetshenziswa kwe-nanotechnology kuthuthukisa kakhulu ukuhanjiswa kokushisa kanye nokusebenza kwemishini, njengakuma-carbon nanotube-reinforced composites.
Uma sibheka phambili, amasimu okushisa e-graphite ahlanzekile kakhulu azoqhubeka nokuthuthukisa ubuchwepheshe bokukhula kwekristalu. Ngocwaningo oluqhubekayo nentuthuko, kuzofezwa intuthuko eyengeziwe ekuhlanzekeni kwekristalu kanye nekhwalithi, kuhlangatshezwane nezidingo zemakethe ezikhulayo zezimboni ze-semiconductor kanye ne-photovoltaic kanye nokunikeza ukwesekwa okubalulekile kokukhiqizwa kwekristalu okuhlanzekile kakhulu.
Isikhathi sokuthunyelwe: Mashi-04-2026