Ho theha Mekhoa ea Silicon Carbide Ceramics

Ho theha Mekhoa ea Silicon Carbide Ceramics: Tlhaloso e Pharalletseng

Sebopeho se ikhethang sa kristale le thepa ea li-ceramics tsa silicon carbide li kenya letsoho ho thepa ea eona e babatsehang. Li na le matla a matle haholo, boima bo phahameng ka ho fetesisa, khanyetso e ntle ea ho roala, ho hanyetsa kutu, conductivity e phahameng ea mocheso le ho hanyetsa mocheso o motle. Lintho tsena li etsa hore li-ceramics tsa silicon carbide li be tse loketseng bakeng sa lits'ebetso tsa ballistic.

Ho etsoa ha silicon carbide ceramics hangata ho sebelisa mekhoa e latelang:

1. Ho bopa ha compression: Ho bopa ha compression ke mokhoa o sebelisoang haholo ho etsa lipampiri tsa silicon carbide bulletproof. Mokhoa ona o bonolo, o bonolo ho o sebetsa, o sebetsa hantle ebile o loketse tlhahiso e tsoelang pele.

2. Ho bopa ka ente: Ente ea ho etsa ente e na le mokhoa o babatsehang oa ho ikamahanya le maemo 'me e ka etsa libopeho le libopeho tse rarahaneng. Mokhoa ona o molemo ka ho khetheha ha o hlahisa likarolo tse khethehileng tsa silicon carbide ceramic.

3. Cold isostatic pressing: Cold isostatic pressing e kenyelletsa ho sebelisoa ha matla a tšoanang ho 'mele o motala, e leng se etsang hore ho be le kabo e tšoanang ea boima ba 'mele. Theknoloji ena e ntlafatsa haholo ts'ebetso ea sehlahisoa 'me e loketse tlhahiso ea li-ceramics tsa silicon carbide tse sebetsang hantle.

4. Ho bopa ka ente ea gel: Ho bopa ka ente ea gel ke mokhoa o batlang o le mocha haufi le boholo ba net oa ho bopa. 'Mele o motala o hlahisoang o na le sebopeho se ts'oanang le matla a phahameng. Likarolo tsa ceramic tse fumanoeng li ka sebetsoa ke mechini e fapaneng, e fokotsang litšenyehelo tsa ts'ebetso ka mor'a sintering. Molding ea ente ea gel e loketse ka ho khetheha bakeng sa ho etsa lirafshoa tsa silicon carbide tse nang le meaho e rarahaneng.

Ka ho sebelisa mekhoa ena ea ho etsa, bahlahisi ba ka fumana lirafshoa tsa boleng bo holimo tsa silicon carbide tse nang le thepa e ntle haholo ea mochini le ballistic. Bokhoni ba ho theha li-ceramics tsa silicon carbide ka libopeho le meaho e fapaneng li lumella ho itlhophisa le ho ntlafatsa ho fihlela litlhoko tse ikhethileng tsa lits'ebetso tse fapaneng.

Ntle le moo, ts'ebeliso e ntle ea litšenyehelo ea lirafshoa tsa silicon carbide e eketsa khahleho ea eona joalo ka thepa e phahameng ea ts'ebetso e hananang le ballistic. Motsoako ona oa thepa e lakatsehang le litšenyehelo tse utloahalang li etsa hore li-ceramics tsa silicon carbide e be ntoa e matla sebakeng sa lihlomo tsa 'mele.

Qetellong, li-ceramics tsa silicon carbide ke tsona tse etellang pele lisebelisoa tsa ballistic ka lebaka la thepa ea tsona e ntle haholo le mekhoa e mengata ea ho bopa. Sebopeho sa kristale, matla, boima, ho hanyetsa, ho hanyetsa kutu, conductivity ea mocheso le ho hanyetsa mocheso oa silicon carbide ceramics ho etsa hore e be khetho e khahlehang bakeng sa bahlahisi le bafuputsi. Ka mekhoa e fapaneng ea ho theha, bahlahisi ba ka etsa li-ceramics tsa silicon carbide ho kopana le lits'ebetso tse ikhethileng, ho netefatsa ts'ebetso e nepahetseng le ts'ireletso. Bokamoso ba li-ceramics tsa silicon carbide boa ts'episa ha li ntse li tsoela pele ho ntshetsa pele le ho sebetsa hantle tšimong ea lisebelisoa tsa ballistic.

Mabapi le tšireletso ea ballistic, ho kopana ha maqephe a polyethylene le ho kenngoa ka ceramic ho ipakile ho sebetsa haholo. Har'a likhetho tse fapaneng tsa ceramic tse fumanehang, silicon carbide e hohetse tlhokomelo e kholo lapeng le kantle ho naha. Lilemong tsa morao tjena, bafuputsi le bahlahisi ba 'nile ba hlahloba bokhoni ba li-ceramics tsa silicon carbide e le thepa e phahameng ea ts'ebetso ea ballistic-resistant ka lebaka la thepa ea eona e babatsehang le litšenyehelo tse itekanetseng.

Silicon carbide ke motsoako o entsoeng ka ho bokella li-tetrahedron tsa Si-C, 'me o na le mefuta e' meli ea kristale, α le β. Ka mocheso o chesang o ka tlase ho 1600 ° C, silicon carbide e teng ka sebōpeho sa β-SiC, 'me ha mocheso o feta 1600 ° C, silicon carbide e fetoha α-SiC. Bond ea covalent ea α-silicon carbide e matla haholo, 'me e ka boloka tlamo e matla haholo esita le mocheso o phahameng.