Ka lebaka la thepa ea eona e ntle ea 'mele, reaction-sintered silicon carbide e' nile ea sebelisoa haholo e le thepa e tala ea lik'hemik'hale. Sebaka sa eona sa kopo se na le likarolo tse tharo: bakeng sa tlhahiso ea li-abrasives; E sebelisetsoa ho hlahisa likarolo tsa ho futhumatsa tse hanyetsanang - molamu oa silicon molybdenum, silicon carbon tube, joalo-joalo; Bakeng sa ho etsa lihlahisoa tsa refractory. E le thepa e khethehileng ea refractory, e sebelisoa ka tšepe le tšepe e qhibilihisang e le sebōpi sa tšepe, cupola le lisebelisoa tse ling tsa stamping, kutu, ho senya boemo bo matla ba lihlahisoa tse sa chese mollo; Ka litšepe tse sa tloaelehang tsa tšepe (zinki, aluminium, koporo) bakeng sa tefiso ea sebōpi, phala ea conveyor ea tšepe e qhibilihisitsoeng, sesebelisoa sa filthara, pitsa ea clamp, joalo-joalo; Le sebaka thekenoloji e le stamping enjene mohatla nozzle, tsoela pele mocheso phahameng khase turbine turbine lehare; Ka indasteri ea silicate, tse ngata e le mefuta e sa tšoaneng ea sebōpi sa liindasteri, mofuta oa lebokose la ho hanyetsa sebōpi, saggar; Indastering ea lik'hemik'hale, e sebelisoa e le tlhahiso ea khase, carburetor ea oli e tala, sebōpi sa flue gas desulfurization joalo-joalo.
Tšebeliso e hloekileng ea lihlahisoa tsa tlhahiso ea α-SiC, ka lebaka la matla a eona a batlang a le maholo, ho thata haholo ho e sila ka phofo e nang le nanoscale ultrafined, 'me likaroloana ke lipoleiti kapa likhoele, tse sebelisetsoang ho sila ka har'a compact, esita le ho futhumatsa ho ea ho bola. mocheso o pota-potileng, o ke ke oa hlahisa ho phutha ho totobetseng haholo, o ke ke oa sintered, boemo ba densification ba lihlahisoa bo tlaase, 'me ho hanyetsa oxidation ho fokola. Ka hona, tlhahiso ea lihlahisoa tsa indasteri, karolo e nyenyane ea ntho e nyenyane ea spherical β-SiC ultrafine phofo e kenngoa ho α-SiC le khetho ea li-additives ho fumana lihlahisoa tse phahameng haholo. E le tlatsetso bakeng sa bonding sehlahisoa, ho ea ka mofuta ka aroloa ka oxides tšepe, metsoako naetrojene, phahameng bohloeki graphite, tse kang letsopa, aluminium oxide, zircon, zirconium corundum, lime phofo, laminated khalase, silicon nitride, silicon oxynitride, phahameng. bohloeki graphite joalo-joalo. Tharollo ea metsi ea sekhomaretsi e ka ba e le 'ngoe kapa tse ngata tsa hydroxymethylcellulose, acrylic emulsion, lignocellulose, tapioca starch, aluminium oxide colloidal solution, silicon dioxide colloidal solution, joalo-joalo Ho ea ka mofuta oa li-additives le phapang ea palo ea ho eketsa, mocheso oa ho thunya oa compact ha o tšoane, 'me mocheso oa mocheso ke 1400 ~ 2300 ℃. Mohlala, α-SiC70% e nang le kabo ea boholo ba phatsa e fetang 44μm, β-SiC20% e nang le kabo ea boholo ba karolo e ka tlase ho 10μm, letsopa 10%, hammoho le 4.5% ea tharollo ea lignocellulosic 8%, e tsoakiloeng ka ho lekana, e entsoe ka 50MPa e sebetsang. khatello, e lelekiloeng moeeng ka 1400 ℃ bakeng sa 4h, Boima bo hlakileng ba sehlahisoa ke 2.53g / cm3, porosity e bonahalang ke 12.3%, 'me matla a matla ke 30-33mpa. Thepa ea sintering ea mefuta e mengata ea lihlahisoa tse nang le li-additives tse fapaneng e thathamisitsoe ho Lethathamo la 2.
Ka kakaretso, li-refractories tsa reaction-sintered silicon carbide li na le thepa ea boleng bo holimo maemong ohle, joalo ka matla a matla a ho hatella, ho hanyetsa mocheso o matla oa mocheso, ho hanyetsa ho apara hantle, conductivity e matla ea mocheso le ho hanyetsa ho bola ha solvent holim'a mefuta e mengata ea mocheso. Leha ho le joalo, e boetse e lokela ho bonoa hore bofokoli ba eona ke hore phello ea antioxidant e fokola, e bakang ho atolosoa ha molumo le ho senyeha ha mocheso o phahameng ho fokotsa bophelo ba tšebeletso. E le ho netefatsa khanyetso ea oxidation ea reaction-sintered silicon carbide refractories, ho entsoe mosebetsi o mongata oa khetho holim'a lera le tlamang. Tšebeliso ea letsopa (e nang le metal oxides) fusion, empa ha ea ka ea fana ka phello ea buffer, likaroloana tsa silicon carbide li ntse li le tlas'a moea oa oxidation le corrosion.
Nako ea poso: Jun-21-2023