SiC coating ke eng?

 

Silicon Carbide SiC Coating ke eng?

Ho roala ha Silicon Carbide (SiC) ke theknoloji ea phetoho e fanang ka tšireletso e ikhethang le ts'ebetso maemong a mocheso o phahameng le o sebetsang ka lik'hemik'hale. Sehlahisoa sena se tsoetseng pele se sebelisoa linthong tse fapaneng, ho kenyelletsa le graphite, ceramics le tšepe, ho ntlafatsa thepa ea tsona, ho fana ka tšireletso e phahameng khahlanong le ho bola, oxidation le ho senyeha. Thepa e ikhethang ea liphahlo tsa SiC, ho kenyeletsoa bohloeki ba tsona bo phahameng, ts'ebetso e ntle ea mocheso, le bots'epehi ba sebopeho, li etsa hore e be tse loketseng ho sebelisoa liindasteri tse kang tlhahiso ea semiconductor, aerospace, le theknoloji ea ho futhumatsa e sebetsang hantle haholo.

 

Melemo ea ho roala silicon carbide

Ho roala ha SiC ho fana ka melemo e 'maloa ea bohlokoa e e khethollang ho liaparo tsa setso tse sireletsang:

• -Ho hanyetsana ho phahameng le ho haneloa ha Corrosion
• Sebopeho sa li-cubic SiC se tiisa hore ho koaheloa ka sekhahla se phahameng, ho ntlafatsa haholo ho hanyetsa kutu le ho lelefatsa nako ea bophelo ea karolo.
• -Kakaretso e Ikhethang ea Libopeho tse Ratang
• Ho roala ha SiC ho tsebahala ka tšireletso ea eona e ntle, esita le ka mekoting e menyenyane e foufetseng e nang le botebo ba ho fihla ho 5 mm, e fanang ka botenya ba junifomo ho ea ho 30% boemong bo tebileng.
• -Ho Customizable Surface Rughness
• Ts'ebetso ea ho roala e khona ho ikamahanya le maemo, e lumellang hore ho be le mafika a fapaneng a holim'a metsi ho lumellana le litlhoko tse khethehileng tsa kopo.
• - Ho roala ka bohloeki bo phahameng
• E fihletsoe ka tšebeliso ea likhase tse hloekileng haholo, ho roala ha SiC ho lula ho hloekile ka mokhoa o ikhethang, ka maemo a litšila hangata a le tlase ho 5 ppm. Bohloeki bona bo bohlokoa bakeng sa liindasteri tsa theknoloji e phahameng tse hlokang ho nepahala le tšilafalo e fokolang.
• - Thermal Stability
• Seaparo sa silicon carbide ceramic se ka mamella mocheso o feteletseng, ka mocheso o phahameng oa ho sebetsa ho fihlela ho 1600 ° C, ho netefatsa ho tšepahala libakeng tse phahameng tsa mocheso.

 

Lisebelisoa tsa SiC Coating

Liaparo tsa SiC li sebelisoa haholo indastering e fapaneng bakeng sa ts'ebetso ea tsona e ke keng ea lekanngoa maemong a thata. Lisebelisoa tsa bohlokoa li kenyelletsa:

• -LED & Solar Industry
• Ho roala ho boetse ho sebelisoa bakeng sa likarolo tsa tlhahiso ea lisele tsa LED le letsatsi, moo bohloeki bo phahameng le ho hanyetsa mocheso ho hlokahalang.
• -Litheknoloji tsa ho futhumatsa tse phahameng tsa mocheso
• Li-graphite tse koahetsoeng ka SiC le lisebelisoa tse ling li sebelisoa ho futhumatsa lisebelisoa bakeng sa libopi le li-reactor tse sebelisoang lits'ebetsong tse fapaneng tsa indasteri.
• -Khōlo ea Crystal ea Semiconductor
• Ka khōlo ea kristale ea semiconductor, liaparo tsa SiC li sebelisetsoa ho sireletsa likarolo tse amehang khōlong ea silicon le likristale tse ling tsa semiconductor, tse fanang ka khanyetso e phahameng ea kutu le botsitso ba mocheso.
• - Silicon le SiC Epitaxy
• Liaparo tsa SiC li sebelisoa ho likarolo tsa mokhoa oa ho hōla oa epitaxial oa silicon le silicon carbide (SiC). Liaparo tsena li thibela oxidation, tšilafalo, le ho netefatsa boleng ba likarolo tsa epitaxial, e leng tsa bohlokoa bakeng sa tlhahiso ea lisebelisoa tse phahameng tsa semiconductor.
• -Mekhoa ea Oxidation le Diffusion
• Likarolo tse koahetsoeng ke SiC li sebelisoa mekhoeng ea oxidation le diffusion, moo li fanang ka thibelo e sebetsang khahlanong le litšila tse sa batleheng le ho matlafatsa botšepehi ba sehlahisoa sa ho qetela. Liaparo li ntlafatsa bophelo bo bolelele le ho ts'epahala ha likarolo tse pepesehileng ho oxidation e phahameng ea mocheso kapa mehato ea ho hasana.

 

Lintho tsa bohlokoa tsa SiC Coating

Liaparo tsa SiC li fana ka mefuta e mengata ea thepa e ntlafatsang ts'ebetso le ho tšoarella ha likarolo tse koahetsoeng ka sic:

• - Sebopeho sa Crystal
• Ho roala ka tloaelo ho hlahisoa ka aβ 3C (cubic) kristalesebopeho, e leng isotropic mme e fana ka ts'ireletso e nepahetseng ea kutu.
• -Tekano le Porosity
• Liaparo tsa SiC li na le sekhahla sa3200kg/m³le pontsho0% porosity, ho netefatsa ts'ebetso e tiileng ea helium le ho thibela kutu.
• - Thermal le Motlakase Thepa
• Ho roala ha SiC ho na le conductivity e phahameng ea mocheso(200 W/m·K)le resistivity e babatsehang ea motlakase(1MΩ·m), ho etsa hore e be e loketseng bakeng sa lisebelisoa tse hlokang tsamaiso ea mocheso le ho kenya motlakase.
• -Matla a Mechini
• Ka modulus rekere ea450 GPA, Liaparo tsa SiC li fana ka matla a phahameng a mochine, ho matlafatsa botšepehi ba sebopeho sa likarolo.

 

SiC silicon carbide coating Process

Thepa ea SiC e sebelisoa ka Chemical Vapor Deposition (CVD), ts'ebetso e kenyelletsang ho bola ha likhase ka mocheso ho beha likarolo tse tšesaane tsa SiC holim'a substrate. Mokhoa ona oa deposition o lumella litekanyetso tse phahameng tsa kholo le taolo e nepahetseng holim'a botenya ba lera, bo ka tlohang10 µm ho isa ho 500 µm, ho itšetlehile ka kopo. Ts'ebetso ea ho roala e boetse e netefatsa tšireletso e ts'oanang, esita le ka li-geometri tse rarahaneng joalo ka masoba a manyane kapa a tebileng, ao hangata a leng thata bakeng sa mekhoa ea khale ea ho roala.

 

Lisebelisoa tse Loketseng SiC Coating

Liaparo tsa SiC li ka sebelisoa ho mefuta e mengata ea lisebelisoa, ho kenyelletsa:

• - Metsoako ea Graphite le Carbon
• Graphite ke sebaka se tsebahalang sa ho roala SiC ka lebaka la thepa ea eona e ntle ea mocheso le motlakase. Ho roala ha SiC ho kenella ka har'a sebopeho sa porous sa graphite, ho theha maqhama a matlafalitsoeng le ho fana ka tšireletso e phahameng.
• - Ceramics
• Li-ceramics tse thehiloeng ho silicon tse kang SiC, SiSiC, le RSiC li rua molemo ho liphahlo tsa SiC, tse ntlafatsang ho hanyetsa ha tsona le ho thibela ho hasana ha litšila.

 

Hobaneng u Khetha Coating ea SiC?

Mekhabiso e ka holim'a metsi e fana ka tharollo e sebetsang le e theko e tlaase bakeng sa liindasteri tse hlokang bohloeki bo phahameng, ho hanyetsa kutu le botsitso ba mocheso. Hore na o sebetsa lefapheng la semiconductor, sepakapaka, kapa likarolo tse futhumatsang tse sebetsang hantle haholo, liphahlo tsa SiC li fana ka tšireletso le ts'ebetso eo u e hlokang ho boloka tšebetso e sebetsang hantle. Motsoako oa sebopeho sa li-cubic tse nang le boholo bo phahameng, thepa e ka tloahelehang ka holim'a metsi, le bokhoni ba ho koahela li-geometri tse rarahaneng li netefatsa hore likarolo tse koahetsoeng ka sic li ka mamella le maemo a thata ka ho fetisisa.

Bakeng sa tlhaiso-leseling e batsi kapa ho buisana ka hore na ho roala ha silicon carbide ceramic ho ka u tsoela molemo joang kopo ea hau e khethehileng, ka kopoiteanye le rona.