Lefapheng le leholo la saense ea thepa, liserame tsa silicon carbide li fetohile "moratuoa" oa masimo a mangata a theknoloji e phahameng ka lebaka la thepa ea tsona e ntle e kang ho thatafala ho hoholo, matla a phahameng, botsitso bo botle ba mocheso le botsitso ba lik'hemik'hale. Ho tloha ho tsa lifofane ho ea tlhahisong ea semiconductor, ho tloha likoloing tse ncha tsa matla ho ea mechining ea indasteri, liserame tsa silicon carbide li bapala karolo ea bohlokoa. Ts'ebetsong ea ho lokisa liserame tsa silicon carbide, mokhoa oa ho sinter ke ntlha ea bohlokoa e khethollang thepa ea eona le mefuta ea ts'ebeliso. Kajeno, re tla teba ts'ebetsong ea sintering ea silicon carbide 'me re tsepamise maikutlo ho hlahlobeng melemo e ikhethang ea reaction sinteredli-ceramic tsa silicon carbide.
Mekhoa e tloaelehileng ea ho sila bakeng sa silicon carbide
Ho na le mekhoa e fapaneng ea ho sila bakeng sa carbide ea silicon, e 'ngoe le e 'ngoe e na le melao-motheo le litšobotsi tsa eona tse ikhethang.
1. Ho tjhesa ka ho tjhesa: Mokhoa ona wa ho tjhesa o kenyeletsa ho kenya phofo ya silicon carbide ka hara hlobo, ho sebedisa kgatello e itseng ha o ntse o futhumatsa, ho phethela ditshebetso tsa ho bopa le ho tjhesa ka nako e le nngwe. Ho tjhesa ka ho tjhesa ka ho tjhesa ho ka fumana diseramike tse teteaneng tsa silicon carbide mochesong o tlase haholo le ka nako e kgutshwane, ka boholo bo bonyenyane ba dithollo le thepa e ntle ya mechini. Leha ho le jwalo, disebediswa tsa ho tjhesa ka ho tjhesa di rarahane, ditjeo tsa hlobo di hodimo, ditlhoko tsa tshebetso ya tlhahiso di tiile, mme ke dikarolo tse bonolo feela tse bopehileng hantle tse ka lokiswang, tse fellang ka bokgoni bo tlase ba tlhahiso, boo ka tekanyo e itseng bo fokotsang tshebediso ya bona e kgolo.
2. Ho sila khatello ea sepakapaka: Ho sila khatello ea sepakapaka ke mokhoa oa ho sila silicon carbide ka ho e futhumatsa ho fihlela ho 2000-2150 ℃ tlas'a khatello ea sepakapaka le maemo a sepakapaka a sa sebetseng, ka ho eketsa lithuso tse loketseng tsa ho sila. E arotsoe ka mekhoa e 'meli: ho sila ha boemo bo tiileng le ho sila ha karolo ea metsi. Ho sila ha karolo e tiileng ho ka fihlela boima bo phahameng ba silicon carbide, ntle le karolo ea khalase pakeng tsa likristale, le thepa e ntle ea mechini ea mocheso o phahameng; Ho sila ha karolo ea metsi ho na le melemo ea mocheso o tlase oa ho sila, boholo bo bonyenyane ba lijo-thollo, le matla a ntlafalitsoeng a ho kobeha ha thepa le ho taboha ho thata. Ho sila ha khatello ea sepakapaka ha ho na lithibelo sebopehong le boholo ba sehlahisoa, litšenyehelo tse tlase tsa tlhahiso, le thepa e ntle e akaretsang ea thepa, empa mocheso oa ho sila o phahame 'me tšebeliso ea matla e phahame.
3. Ho sinya ha karabelo: Carbide ea silicon e sintered reaction e ile ea qalisoa ka lekhetlo la pele ke P. Popper lilemong tsa bo-1950. Ts'ebetso ena e kenyelletsa ho kopanya phofo ea mohlodi oa carbon le silicon carbide, le ho lokisa 'mele o motala ka mekhoa e kang ho enta ka ente, ho hatella ka omileng, kapa ho hatella ka mokhoa o batang oa isostatic. Ebe billet e futhumatsoa ho feta 1500 ℃ tlas'a vacuum kapa sepakapaka se sa sebetseng, moo silicon e tiileng e qhibilihang ho ba silicon e metsi, e kenellang ka har'a billet e nang le masoba ka ts'ebetso ea capillary. Mokelikeli oa silicon kapa mouoane oa silicon o feta karabelong ea lik'hemik'hale le C 'meleng o motala,' me β - SiC e hlahisoang ke in-situ e kopana le likaroloana tsa pele tsa SiC 'meleng o motala ho theha thepa ea ceramic ea silicon carbide e sintered reaction.
Melemo ea Li-ceramics tsa Silicon Carbide tsa Reaction Sintering
Ha ho bapisoa le mekhoa e meng ea ho sinter, li-ceramic tsa silicon carbide tse nang le karabelo ea sintered li na le melemo e mengata ea bohlokoa:
1. Mocheso o tlase oa ho sila le litšenyehelo tse ka laoloang: Mocheso oa ho sila oa karabelo hangata o tlase ho feta mocheso oa sepakapaka oa ho sila, e leng se fokotsang haholo tšebeliso ea matla le litlhoko tsa ts'ebetso ea mocheso o phahameng bakeng sa lisebelisoa tsa ho sila. Mocheso o tlase oa ho sila o bolela litšenyehelo tse tlase tsa tlhokomelo bakeng sa lisebelisoa le tšebeliso e fokotsehileng ea matla nakong ea ts'ebetso ea tlhahiso, e leng se fokotsang litšenyehelo tsa tlhahiso ka katleho. Sena se etsa hore li-ceramics tsa silicon carbide tse sintered reaction li be le melemo e meholo ea moruo tlhahisong e kholo.
2. Ho thehoa ha boholo bo batlang bo lekana le netweke, ho loketse meaho e rarahaneng: Nakong ea ts'ebetso ea ho sila ha karabelo, thepa ha e fokotsehe ka bongata. Tšobotsi ena e etsa hore e tšoanelehe haholo bakeng sa ho lokisa likarolo tsa meaho tse kholo, tse bōpehileng joaloka tse rarahaneng. Ebang ke likarolo tse nepahetseng tsa mechini kapa likarolo tse kholo tsa lisebelisoa tsa indasteri, liserami tsa silicon carbide tse sintered reaction li ka fihlela litlhoko tsa moralo ka nepo, tsa fokotsa mehato e latelang ea ts'ebetso, tsa ntlafatsa katleho ea tlhahiso, 'me hape tsa fokotsa tahlehelo ea thepa le keketseho ea litšenyehelo tse bakoang ke ts'ebetso.
3. Tekanyo e phahameng ea ho tiea ha thepa: Ka ho laola maemo a karabelo ka mokhoa o utloahalang, ho sintering ha karabelo ho ka fihlella tekanyo e phahameng ea ho tiea ha li-ceramic tsa silicon carbide. Sebopeho se teteaneng se fa thepa thepa thepa e nang le thepa e ntle ea mechini, joalo ka matla a ho kobeha a phahameng le matla a ho hatella, e leng se e nolofalletsang ho boloka botsitso ba sebopeho tlas'a matla a bohlokoa a kantle. Ka nako e ts'oanang, sebopeho se teteaneng se boetse se ntlafatsa ho hanyetsa ho tsofala le ho hanyetsa ho bola ha thepa, e e lumellang ho sebetsa ka botsitso libakeng tse thata tsa mosebetsi le ho lelefatsa bophelo ba eona ba ts'ebeletso.
4. Botsitso bo botle ba lik'hemik'hale: Liserame tsa silicon carbide tse nang le karabelo li na le khanyetso e ntle ho li-acid tse matla le litšepe tse qhibilihisitsoeng. Liindastering tse kang tsa lik'hemik'hale le tsa tšepe, hangata lisebelisoa li hloka ho kopana le mefuta e fapaneng ea mecha ea phatlalatso e senyang. Liserame tsa silicon carbide tse nang le karabelo li ka hanela ho senyeha ha mecha ena ea phatlalatso ka katleho, tsa netefatsa ts'ebetso e tloaelehileng ea lisebelisoa, tsa fokotsa litšenyehelo tsa tlhokomelo le ho nkela sebaka, le ho ntlafatsa tsoelo-pele ea tlhahiso le botsitso.
E sebetsa haholo mafapheng a fapaneng
Ka melemo ena, liserami tsa silicon carbide tse nang le karabelo e sa fetoheng li sebelisitsoe haholo masimong a mangata. Lefapheng la lisebelisoa tsa ontong tse nang le mocheso o phahameng, li ka mamella maemo a mocheso o phahameng le ho netefatsa ts'ebetso e sebetsang hantle ea li-ontong; Li-exchange tsa mocheso, ho tsamaisa ha tsona mocheso o motle le ho hanyetsa mafome li li etsa khetho e ntle ea thepa; Lisebelisoa tsa tšireletso ea tikoloho tse kang li-nozzle tsa desulfurization, li ka hanela ho senyeha ha mecha ea phatlalatso e senyang le ho netefatsa ts'ebetso e tsitsitseng ea nako e telele ea lisebelisoa. Ho feta moo, liserami tsa silicon carbide tse nang le karabelo e sa fetoheng le tsona li bapala karolo ea bohlokoa masimong a maemo a holimo joalo ka photovoltaics le aerospace.
Liserame tsa silicon carbide tse nang le karabelo li na le boemo ba bohlokoa lelapeng la silicon carbide ka lebaka la melemo ea tsona e ikhethang. Ka tsoelo-pele e tsoelang pele ea theknoloji le ntlafatso e tsoelang pele ea lits'ebetso, ho lumeloa hore liserame tsa silicon carbide tse nang le karabelo li tla bontša ts'ebetso ea tsona e ntle masimong a mangata, li fane ka tšehetso e matla ea thepa bakeng sa nts'etsopele ea liindasteri tse fapaneng.
Nako ea poso: Phuptjane-13-2025