Hangata e shebane le bareki, 'me ke sepheo sa rona sa ho qetela hore e se be feela mofani ea tšepahalang, ea ka tšeptjoang le ea tšepahalang, empa hape le molekane oa bareki ba rona bakeng sa Theko e Tlase ka Ho Fetisisa China 1200c Plasma Enhanced Chemical Vapor Deposition.PecvdVacuum Funace, Ho ithuta haholoanyane ka seo re ka u etsetsang sona, ikopanye le rona neng kapa neng. Re labalabela ho theha likamano tse ntle le tsa nako e telele tsa khoebo le uena.
Hangata e lebisitsoe tlhokomelong ea bareki, 'me ke sepheo sa rona sa ho qetela hore e se be feela mofani ea nang le botumo bo botle, ea ka tšeptjoang le ea tšepahalang, empa hape le molekane oa bareki ba rona.China Plasma e Matlafalitsoeng ke Moholi oa Mouoane oa Lik'hemik'hale, Pecvd, Thepa ea rona e tsoetseng pele, taolo e ntle ea boleng, lipatlisiso le bokhoni ba nts'etsopele li etsa hore theko ea rona e theohe. Theko eo re fanang ka eona e kanna ea se be tlase ho fetisisa, empa re netefatsa hore e na le tlholisano ka botlalo! Rea u amohela ho ikopanya le rona hang-hang bakeng sa likamano tsa nako e tlang tsa khoebo le katleho e kopaneng!
Lisebelisoa tsa carbon / carbon(eo ka mor'a moo e bitsoang "C / C kapa CFC") ke mofuta oa lintho tse entsoeng ka motsoako o thehiloeng holim'a carbon le ho matlafatsoa ke carbon fiber le lihlahisoa tsa eona (carbon fiber preform). E na le inertia ea carbon le matla a phahameng a carbon fiber. E na le thepa e ntle ea mochini, ho hanyetsa mocheso, ho hanyetsa kutu, ho fokotsa likhohlano le litšobotsi tsa motlakase le tsa motlakase.
CVD-SiCbarbotage na le litšobotsi tsa sebopeho junifomo, thepa diseke ee, phahameng mocheso ho hanyetsa, khanyetso oxidation, bohloeki phahameng, acid & alkali ho hanyetsa le reagent manyolo, le thepa e tsitsitseng 'meleng le lik'hemik'hale.
Ha ho bapisoa le lisebelisoa tse phahameng tsa graphite, graphite e qala ho oxidize ho 400C, e tla baka tahlehelo ea phofo ka lebaka la oxidation, e leng se bakang tšilafalo ea tikoloho ho lisebelisoa tsa peripheral le likamore tsa vacuum, le ho eketsa litšila tsa tikoloho e hloekileng.
Leha ho le joalo, ho roala ha SiC ho ka boloka botsitso ba 'mele le lik'hemik'hale ka likhato tse 1600, E sebelisoa haholo indastering ea sejoale-joale, haholo indastering ea semiconductor.
Khamphani ea rona e fana ka lits'ebeletso tsa ts'ebetso ea ho roala SiC ka mokhoa oa CVD holim'a graphite, li-ceramics le lisebelisoa tse ling, e le hore likhase tse khethehileng tse nang le carbon le silicon li sebetsane le mocheso o phahameng ho fumana limolek'hule tsa SiC tse hloekileng, limolek'hule tse behiloeng holim'a thepa e koahetsoeng, ho etsa lera la tšireletso la SIC. SIC e entsoeng e tlamahane ka thata ho setsi sa graphite, e fana ka lisebelisoa tse khethehileng tsa graphite, kahoo e etsa hore bokaholimo ba graphite bo kopane, bo se ke ba e-ba le Porosity, ho hanyetsa mocheso o phahameng, ho hanyetsa kutu le ho hanyetsa oxidation.
Lintlha tse ka sehloohong:
1. Ho hanyetsa mocheso o phahameng oa oxidation:
khanyetso ea oxidation e ntse e le ntle haholo ha mocheso o le holimo ho 1600 C.
2. Bohloeki bo phahameng: bo entsoeng ka ho kenngoa ha mouoane oa lik'hemik'hale tlas'a boemo bo phahameng ba mocheso oa chlorination.
3. Ho hanyetsa khoholeho ea mobu: boima bo phahameng, bokaholimo bo kopanetsoeng, likaroloana tse ntle.
4. Ho hanyetsa kutu: acid, alkali, letsoai le li-reagents tse phelang.
Lintlha tse ka sehloohong tsa CVD-SIC Coatings:
| SiC-CVD | ||
| Botenya | (g/cc)
| 3.21 |
| Matla a flexural | (Mpa)
| 470 |
| Katoloso ea mocheso | (10-6/K) | 4
|
| Thermal conductivity | (W/mK) | 300
|
