Ke hobane'ng ha li-electrode tsa graphite li khona ho mamella maemo a mocheso o phahameng?
Li-electrode tsa graphite li bapala karolo ea bohlokoa indastering ea sejoale-joale, haholo lits'ebetsong tse maemong a mocheso o phahameng, joalo ka ho etsa tšepe ea tšepe ea arc, electrolysis ea aluminium le ts'ebetso ea electrochemical. Lebaka leo ka lona li-electrode tsa graphite li khonang ho mamella maemo a mocheso o phahameng haholo-holo li bakoa ke litšobotsi tsa tsona tse ikhethang tsa 'mele le lik'hemik'hale. Sehlooho sena se tla hlahloba ka ho qaqileng ts'ebetso e babatsehang ea li-electrode tsa graphite libakeng tse phahameng tsa mocheso ho tloha likarolong tse kang sebopeho, thepa ea mocheso, botsitso ba lik'hemik'hale, le matla a mochine oa graphite.
1. Litšobotsi tsa sebopeho sa graphite
Graphite ke thepa e entsoeng ka lera e entsoeng ka liathomo tsa carbon. Ka sebopeho sa kristale sa graphite, liathomo tsa k'habone li hlophisitsoe ka lera la polane ea hexagonal. Liathomo tsa k'habone ka har'a lera ka 'ngoe li hokahane ka litlamo tse matla tsa covalent, ha likarolo li kopana ka matla a batlang a fokola a van der Waals. Sebopeho sena se nang le lera se etsa hore graphite e be le litšobotsi tse ikhethang tsa 'mele le lik'hemik'hale.
Litlamo tse matla tsa covalent ka har'a mekhahlelo: Maqhama a covalent pakeng tsa liathomo tsa k'habone ka har'a mekhahlelo e matla haholo, a nolofalletsang graphite ho boloka botsitso ba sebopeho esita le mochesong o phahameng.
Weak van der Waals matla a pakeng tsa mealo: Tšebelisano pakeng tsa lihlopha e batla e fokola, e leng se etsang hore graphite e sekamele ho interlayer e thellang ha e tlas'a matla a ka ntle. Tšobotsi ena e etsa hore graphite e be le lubricity e ntle haholo le ts'ebetso.
2. Thermal thepa
Ts'ebetso e ntle haholo ea li-electrode tsa graphite libakeng tse nang le mocheso o phahameng haholo li hlahisoa ke thepa ea tsona e ikhethang ea mocheso.
Sebaka se phahameng sa ho qhibiliha: Graphite e na le sebaka se phahameng haholo sa ho qhibiliha, hoo e ka bang 3,652 °C, e leng holimo haholo ho feta litšepe tse ngata le lialloi. Sena se nolofalletsa graphite hore e lule e tiile mochesong o phahameng ntle le ho qhibiliha kapa ho holofala.
Mocheso o phahameng oa mocheso: Graphite e na le mocheso o batlang o le holimo, o ka tsamaisang le ho qhala mocheso ka potlako, ho thibela ho futhumala ha libaka. Tšobotsi ena e nolofalletsa electrode ea graphite ho arola mocheso ka ho lekana libakeng tse phahameng tsa mocheso, ho fokotsa khatello ea mocheso le ho lelefatsa bophelo ba tšebeletso.
Coefficient e tlase ea katoloso ea mocheso: Graphite e na le coefficient e batlang e le tlase ea katoloso ea mocheso, ho bolelang hore molumo oa eona o fetoha hanyane ka mocheso o phahameng. Tšobotsi ena e etsa hore li-electrode tsa graphite li boloke botsitso bo boholo libakeng tse nang le mocheso o phahameng, ho fokotsa khatello ea kelello le ho senyeha ho bakoang ke ho eketseha ha mocheso.
3. Ho tsitsa ha lik'hemik'hale
Ho tsitsa ha lik'hemik'hale tsa li-electrode tsa graphite libakeng tse phahameng tsa mocheso le tsona ke e 'ngoe ea lintlha tsa bohlokoa tsa hore li mamelle mocheso o phahameng.
Khanyetso ea oxidation: Ha mocheso o le holimo, sekhahla sa graphite se nang le oksijene se batla se lieha, haholo-holo likhase tse sa sebetseng kapa tse fokotsang libaka tsa leholimo, moo tekanyo ea oxidation ea graphite e leng tlaase le ho feta. Khanyetso ena ea oxidation e etsa hore li-electrode tsa graphite li sebelisoe nako e telele libakeng tse nang le mocheso o phahameng ntle le ho ba le oxidized le ho felloa ke matla.
Corrosion resistance: Graphite e na le khanyetso e ntle ea kutu ho li-acids tse ngata, alkalis le matsoai, e etsang hore li-electrode tsa graphite li lule li tsitsitse maemong a mocheso o phahameng le a senyang. Ka mohlala, nakong ea ts'ebetso ea electrolytic ea aluminium, li-electrode tsa graphite li ka mamella ho bola ha aluminium e qhibilihisitsoeng le letsoai la fluoride.
4. Matla a mochine
Le hoja tšebelisano ea interlaminar ea graphite e batla e fokola, maqhama a matla a covalent ka har'a sebopeho sa eona sa intramellar e fana ka graphite e nang le matla a phahameng a mochine.
Matla a phahameng a ho hatella: Li-electrode tsa graphite li ka boloka matla a batlang a le holimo haholo esita le lithempereichara tse phahameng, tse khonang ho mamella khatello e phahameng le meroalo e matla ka har'a libopi tsa arc tsa motlakase.
Ho hanyetsa ka mokhoa o tsotehang oa mocheso oa mocheso: The coefficient e tlase ea katoloso ea mocheso le mocheso o phahameng oa mocheso oa graphite o e fa matla a ho hanyetsa mocheso oa mocheso, o e nolofalletsang ho boloka botšepehi ba sebopeho nakong ea ho futhumatsa le ho pholisa ka potlako le ho fokotsa ho phatloha le tšenyo e bakoang ke khatello ea mocheso.
5. Thepa ea motlakase
Ts'ebetso ea motlakase ea li-electrode tsa graphite libakeng tse phahameng tsa mocheso le tsona ke lebaka la bohlokoa bakeng sa ts'ebeliso ea tsona e pharaletseng.
Motlakase o phahameng oa motlakase: Graphite e na le motlakase o babatsehang oa motlakase, o ka tsamaisang hona joale hantle le ho fokotsa tahlehelo ea matla. Tšobotsi ena e nolofalletsa li-electrode tsa graphite ho fetisetsa matla a motlakase ka mokhoa o nepahetseng ka har'a libono tsa motlakase tsa arc le mekhoa ea electrolysis.
Restivity e tlase: Theko e tlase ea graphite e e nolofalletsa ho boloka khanyetso e batlang e le tlase mochesong o phahameng, ho fokotsa tlhahiso ea mocheso le tahlehelo ea matla, le ho ntlafatsa ts'ebeliso ea matla a matla.
6. Ts'ebetso ea ts'ebetso
Ts'ebetso ea ts'ebetso ea li-electrode tsa graphite e boetse ke ntlha ea bohlokoa bakeng sa ts'ebeliso ea tsona libakeng tse phahameng tsa mocheso.
Ts'ebetso e bonolo: Graphite e na le ts'ebetso e ntle haholo mme e ka sebetsoa hore e be li-electrode tsa libopeho le boholo bo fapaneng ka ts'ebetso ea mochini, ho reteleha, ho sila le mekhoa e meng ho fihlela litlhoko tsa maemo a fapaneng a ts'ebeliso.
Bohloeki bo phahameng: Li-electrode tse phahameng tsa graphite li na le botsitso le ts'ebetso e ntlafetseng libakeng tse phahameng tsa mocheso, tse ka fokotsang liphetoho tsa lik'hemik'hale le mefokolo ea sebopeho e bakoang ke litšila.
7. Mehlala ea Tšebeliso
Li-electrode tsa graphite li sebelisoa haholo libakeng tse ngata tsa mocheso o phahameng oa mocheso. E latelang ke mehlala e meng e tloaelehileng ea ts'ebeliso:
Ho etsa tšepe ea tšepe ea arc ea motlakase: Ts'ebetsong ea ho etsa tšepe ea tšepe ea arc, li-electrode tsa graphite, joalo ka lisebelisoa tse tsamaisang, li khona ho mamella mocheso o fihlang ho 3000 ° C, li fetola matla a motlakase hore e be matla a futhumatsang ho qhibilihisa tšepe ea tšepe le tšepe ea kolobe.
Electrolytic aluminium: Nakong ea ts'ebetso ea aluminium ea electrolytic, electrode ea graphite e sebetsa e le anode, e khonang ho mamella mocheso o phahameng le ho bola ha letsoai le qhibilihantsoeng la aluminium le fluoride, ho tsamaisa ka mokhoa o tsitsitseng, le ho khothalletsa tlhahiso ea electrolytic ea aluminium.
Ho sebetsa ka mochine oa electrochemical: Ho machining a electrochemical, li-electrode tsa graphite, e le li-electrode tsa sesebelisoa, li ka sebetsa ka mokhoa o tsitsitseng libakeng tse phahameng tsa mocheso le tse senyang, ho finyella ts'ebetso e nepahetseng le ho theha.
Qetello
Qetellong, lebaka leo ka lona li-electrode tsa graphite li ka mamellang maemo a mocheso o phahameng haholo-holo li lutse ka har'a sebopeho sa tsona se ikhethileng, thepa e ntle ea mocheso, botsitso ba lik'hemik'hale, matla a mochini, thepa ea motlakase le ts'ebetso ea ts'ebetso. Litšobotsi tsena li thusa li-electrode tsa graphite hore li lule li tsitsitse ebile li sebetsa hantle maemong a mocheso o phahameng le a senyang, 'me li sebelisoa haholo masimong a kang ho etsa tšepe ea tšepe ea arc, electrolytic aluminium le electrochemical processing. Ka nts'etsopele e tsoelang pele ea theknoloji ea indasteri, boholo ba ts'ebetso le ts'ebeliso ea li-electrode tsa graphite li tla atolosoa, ho fana ka tharollo e tšepahalang le e sebetsang bakeng sa liindasteri tsa mocheso o phahameng.
Nako ea poso: Apr-21-2025