Sintered silicon carbide ke thepa ea bohlokoa ea ceramic, e sebelisoang haholo mocheso o phahameng, khatello e phahameng le masimo a matla a phahameng. Reactive sintering ea SIC ke mohato oa bohlokoa oa ho lokisa lisebelisoa tsa SIC tse sirelelitsoeng. Taolo e nepahetseng ea sintering SIC reaction e ka re thusa ho laola boemo ba karabelo le ho ntlafatsa boleng ba sehlahisoa. Mokhoa o nepahetseng oa taolo oa karabelo ea sintered silicon carbide e tšohloa pampiring ena.
1. Optimization ea karabelo sintering maemo a SIC
Maemo a karabelo ke likarolo tsa bohlokoa tsa karabelo ea sintered silicon carbide, ho kenyelletsa mocheso oa karabelo, khatello ea karabelo, karo-karolelano ea boima ba reactant le nako ea karabelo. Ha o ntlafatsa maemo a karabelo, hoa hlokahala ho ikamahanya le litlhoko tse ikhethileng tsa kopo le mochini oa karabelo.
(1) Thempereichara ea ho itšoara: Thempereichara ke e 'ngoe ea lintlha tsa bohlokoa tse amang lebelo la karabelo le boleng ba sehlahisoa. Mofuteng o itseng, ha mocheso oa karabelo o phahame, lebelo la ho arabela ka potlako, boleng ba sehlahisoa bo phahame. Leha ho le joalo, mocheso o phahameng haholo oa karabelo o tla lebisa ho eketseha ha li-pores le mapetsong a sehlahisoa, ho ama boleng ba sehlahisoa.
(2) Khatello ea karabelo: Khatello ea karabelo e boetse e na le tšusumetso ho lebelo la karabelo le boima ba sehlahisoa. Ka har'a mefuta e itseng, ha khatello ea karabelo e phahame, lebelo la karabelo le potlaka le ho phahama ha sehlahiswa. Leha ho le joalo, khatello e phahameng haholo ea karabelo e ka boela ea lebisa ho li-pores le mapetsong a sehlahisoa.
(3) reactant mass ratio: reactant mass ratio ke ntlha e 'ngoe ea bohlokoa e amang lebelo la karabelo le boleng ba sehlahisoa. Ha karo-karolelano ea boima ba carbon ho silicon e loketse, sekhahla sa karabelo le boima ba sehlahisoa. Haeba reactant boima karo-karolelano e sa tšoanelehe, e tla ama sekgahla karabelo le boima ba sehlahisoa.
(4) Nako ea ho arabela: Nako ea ho itšoara ke e 'ngoe ea lintlha tse amang lebelo la ho arabela le boleng ba sehlahisoa. Ka har'a mefuta e itseng, ha nako ea karabelo e lelelele, lebelo la karabelo le ea butle 'me boleng ba sehlahisoa bo phahame. Leha ho le joalo, nako e telele haholo ea karabelo e tla lebisa ho eketseha ha li-pores le mapetsong a sehlahisoa, ho ama boleng ba sehlahisoa.
2. Taolo ea ts'ebetso ea reactive sintering silicon carbide
Ts'ebetsong ea sintering SIC reaction, hoa hlokahala ho laola ts'ebetso ea karabelo. Sepheo sa taolo ke ho netefatsa botsitso ba karabelo le ho lumellana ha boleng ba sehlahisoa. Taolo ea ts'ebetso e kenyelletsa taolo ea mocheso, taolo ea khatello, taolo ea sepakapaka le taolo ea boleng bo sebetsang.
(1) Taolo ea mocheso: Taolo ea mocheso ke e 'ngoe ea likarolo tsa bohlokoa tsa taolo ea tšebetso ea karabelo. Taolo ea mocheso Mocheso oa karabelo o lokela ho laoloa ka nepo kamoo ho ka khonehang ho netefatsa botsitso ba ts'ebetso ea karabelo le boleng bo tsitsitseng ba sehlahisoa. Tlhahisong ea sejoale-joale, sistimi ea taolo ea komporo hangata e sebelisoa ho laola ka nepo mocheso oa karabelo.
(2) Taolo ea khatello: Ho laola khatello ke karolo e 'ngoe ea bohlokoa ea ho laola mokhoa oa ho itšoara. Ka ho laola khatello ea maikutlo, botsitso ba mokhoa oa ho itšoara le ho lumellana ha boleng ba sehlahisoa ho ka netefatsoa. Tlhahisong ea sejoale-joale, sistimi ea taolo ea komporo hangata e sebelisoa ho laola ka nepo khatello ea maikutlo.
(3) Taolo ea atmosphere: Taolo ea sepakapaka e bolela tšebeliso ea sepakapaka se ikhethileng (joalo ka sepakapaka sa inert) ts'ebetsong ea ho laola ts'ebetso. Ka ho laola sepakapaka, botsitso ba ts'ebetso ea karabelo le ho tsitsa ha boleng ba sehlahisoa ho ka netefatsoa. Tlhahisong ea morao-rao, mokhoa oa ho laola lik'homphieutha hangata o sebelisoa ho laola sepakapaka.
(4) Taolo ea boleng ba reactant: Taolo ea boleng ba reactant ke e 'ngoe ea lintlha tsa bohlokoa ho netefatsa botsitso ba ts'ebetso ea karabelo le ho tsitsa ha boleng ba sehlahisoa. Ka ho laola boleng ba li-reactants, botsitso ba mokhoa oa ho arabela le ho tsitsa ha boleng ba sehlahisoa ho ka netefatsoa. Tlhahisong ea sejoale-joale, sistimi ea taolo ea likhomphutha hangata e sebelisoa ho laola boleng ba li-reactants.
Taolo e nepahetseng ea reactive sintering SIC ke mohato oa bohlokoa oa ho lokisa lisebelisoa tsa boleng bo holimo tsa sintered SIC. Ka ho ntlafatsa maemo a karabelo, ho laola ts'ebetso ea karabelo le ho beha leihlo lihlahisoa tsa karabelo, botsitso ba ts'ebetso ea karabelo le botsitso ba boleng ba sehlahisoa bo ka netefatsoa. Ts'ebetsong e sebetsang, karabelo ea sintered silicon carbide e hloka ho lokisoa ho latela maemo a ikhethileng a kopo ho fihlela litlhoko tse fapaneng tsa kopo.
Nako ea poso: Jun-05-2023