Silicon carbide e sintering reaction ke mokhoa oa bohlokoa oa ho hlahisa thepa ea ceramic e sebetsang hantle. Mokhoa ona o sebelisa kalafo ea mocheso ea mehloli ea carbon le silicon mochesong o phahameng ho etsa hore e arabele ho theha silicon carbide ceramics.
1. Ho lokisa thepa e tala. Thepa e tala ea carbide ea silicon e sintered reaction-sintered e kenyelletsa mohloli oa carbon le mohloli oa silicon. Mohloli oa carbon hangata ke carbon black kapa polymer e nang le carbon, ha mohloli oa silicon e le silika e phofshoana. Thepa ena e tala e hloka ho siloa, ho hlahlojoa le ho tsoakoa ho netefatsa boholo ba likaroloana tse tšoanang, ha ka nako e ts'oanang e laola metsoako ea tsona ea lik'hemik'hale e le ho fumana li-ceramic tsa silicon carbide tsa boleng bo holimo nakong ea kalafo ea mocheso.
2. Sebopeho. Kenya thepa e tala e tsoakiloeng ka har'a hlobo ea ho bopa bakeng sa ho bopa. Ho na le mefuta e mengata ea mekhoa ea ho bopa, e sebelisoang hangata ke ho bopa ka khatiso le ho bopa ka ente. Ho bopa ka khatello ke ho hatella phofo ea thepa e tala tlas'a khatello ea ho bopa, ha ho bopa ka ente e le thepa e tala e kopantsoeng le sekhomaretsi, e fafatsoa ka har'a hlobo ka syringe ho bopa. Kamora ho bopa, ho hlokahala ho etsa kalafo ea ho tlosa ceramic billet ho hlobo.
3. Kalafo ea mocheso. 'Mele o entsoeng ka letsopa o kenngoa ka sebōping sa kalafo ea mocheso bakeng sa ho sila. Ts'ebetso ea ho sila e arotsoe ka mekhahlelo e 'meli: mohato oa ho sila le mohato oa ho sila. Mokhahlelong oa ho sila, 'mele oa letsopa o futhumatsoa mochesong o phahameng (hangata ka holimo ho 1600 ° C) tlas'a sepakapaka se sa sebetseng, 'me mohloli oa khabone o arabela le mohloli oa silicon ho hlahisa silicon carbide. Mokhahlelong oa ho sila, mocheso o phahamisetsoa mochesong o phahameng (hangata ka holimo ho 1900 ° C), e leng se bakang ho tsosolosoa ha crystallization le ho tiea pakeng tsa likaroloana tsa silicon carbide. Ka tsela ena, boima ba 'mele oa silicon carbide bo ntlafala le ho feta, ha boima le ho hanyetsa ho tsofala le tsona li ntlafala haholo.
4. Ho Qetella. 'Mele oa letsopa o sinngoeng o hloka ho phethoa ho fumana sebopeho le boholo bo lakatsehang. Mekhoa ea ho qeta e kenyelletsa ho sila, ho seha, ho phunya, jj. Ka lebaka la ho thatafala ho hoholo ha thepa ea silicon carbide, ho thata ho e qeta, ho hloka tšebeliso ea lisebelisoa tsa ho sila tse nepahetseng haholo le lisebelisoa tsa ho e lokisa.
Ka bokhutšoanyane, ts'ebetso ea tlhahiso ea carbide ea silicon e sintered reaction-sintered e kenyelletsa ho lokisa thepa e tala, ho bopa, kalafo ea mocheso le ho qeta. Har'a tsona, mohato oa bohlokoa ke ts'ebetso ea kalafo ea mocheso, eo taolo ea eona e leng ea bohlokoa ho fumana thepa ea carbide ea silicon ea boleng bo holimo. Hoa hlokahala ho laola mocheso, sepakapaka, nako ea ho tšoara le lintlha tse ling tsa kalafo ea mocheso ho netefatsa hore karabelo e lekane, kristale e phethehile 'me letsoalo le phahame.
Molemo oa ts'ebetso ea tlhahiso ea carbide ea silicon e sintered reaction-sintered ke hore thepa ea ceramic e nang le bothata bo phahameng, matla a phahameng, khanyetso e phahameng ea ho tsofala le botsitso bo phahameng ba mocheso li ka lokisoa. Thepa ena ha e na feela thepa e ntle ea mechini, empa hape e na le khanyetso e ntle ea ho bola le thepa ea mocheso o phahameng. Thepa ea silicon carbide e ka sebelisoa ho etsa likarolo tse fapaneng tsa boenjiniere, litiiso tsa mechini, lisebelisoa tsa kalafo ea mocheso, li-ceramic tsa ontong le tse ling. Ka nako e ts'oanang, thepa ea silicon carbide e ka boela ea sebelisoa ho semiconductor, matla a letsatsi, thepa ea makenete le masimo a mang.
Ka bokhutšoanyane, carbide ea silicon e sintering ea karabelo ke mokhoa oa bohlokoa oa ho lokisa thepa ea ceramic e sebetsang hantle. Ts'ebetso ea tlhahiso e hloka taolo e ntle ea khokahano ka 'ngoe ho fumana thepa ea carbide ea silicon ea boleng bo holimo. Lisebelisoa tsa carbide ea silicon e sintered ea karabelo li na le thepa e ntle ea mechini, ho hanyetsa mafome le thepa ea mocheso o phahameng, 'me li na le menyetla e mengata ea ts'ebeliso masimong a fapaneng a indasteri le a saense.
Nako ea poso: Phupu-21-2023