Reaction-sintered silicon carbide porcelain e na le matla a matle a ho hatella mocheso o tikolohong, ho hanyetsa mocheso ho oxidation ea moea, ho hanyetsa mocheso o motle, ho hanyetsa mocheso o motle, katoloso e nyane ea linear, coefficient e phahameng ea ho fetisa mocheso, boima bo phahameng, ho hanyetsa mocheso le ho senya, ho thibela mollo le litšobotsi tse ling tsa boleng bo holimo. E sebelisoa haholo likoloing, li-automation tsa mochini, ts'ireletso ea tikoloho, boenjiniere ba sefofane, lisebelisoa tsa elektroniki tsa litaba, matla a matla le likarolo tse ling, e se e le lirafshoa tsa meralo tse theko e tlaase le tse ke keng tsa nkeloa sebaka libakeng tse ngata tsa indasteri.
Sintering e se nang khatello e tsejoa e le mokhoa o ts'episang oa SiC calcination. Bakeng sa mechini e fapaneng e tsoelang pele ea ho lahla, sintering e sa sebetseng e ka aroloa ka mokhoa o tiileng oa ho bala le ho balla boemo bo phahameng ba mokelikeli. Ka ho eketsa B le C tse loketseng (litaba tsa oksijene tse ka tlase ho 2%) hammoho ka phofo e ntle haholo ea Beta SiC, S. Proehazka e sintered ka har'a 'mele oa SIC o nang le calcined o nang le sekhahla se fetang 98% ho 2020, le Al2O3 le Y2O3 e le tlatsetso. Calcined 0.5m-SiC tlas'a 1850-1950 (particle surface e nang le SiO2 e nyenyane), qeto ke hore boima ba SiC porcelain bo feta 95% ea tekanyo ea motheo ea theory, boholo ba lijo-thollo bo nyane, 'me boholo ba karolelano bo boholo, boo ke 1.5μm.
Reactive sintering silicon carbide e bua ka ts'ebetso eohle ea ho bonts'a porous structure billet e nang le mokelikeli oa mokelikeli kapa karolo e phahameng ea mokelikeli, ho ntlafatsa boleng ba billet, ho fokotsa lesoba la moea, le ho hlakola sehlahisoa se feliloeng ka matla a itseng le ho nepahala ho itseng. Plutonium-sic powder le high purity graphite li tsoakoa ka tekanyo e itseng ebe li futhumatsoa hoo e ka bang 1650 ho hlahisa moriri o embryo. Ka nako e ts'oanang, e kenella kapa e kenella ka har'a tšepe ka mokelikeli oa Si, e bonahatsa ka silicon carbide ho etsa plutonium-sic, 'me e kopanya le likaroloana tse teng tsa plutonium-sic. Ka mor'a hore Si infiltration, karabelo sintered 'mele o nang le lintlha tse qaqileng lekanyetsoang le boholo unpacked ka fumanoa. Ha ho bapisoa le mekhoa e meng ea sintering, ka tshebetso ya phahameng segokanyipalo karabelo sintering boholo phetoho e batlang e le nyenyane, ho ka etsa hore boholo bo nepahetseng ba thepa, empa ho na le e ngata SiC ka 'mele calcined, litšobotsi tse phahameng tsa mocheso oa karabelo sintered SiC porcelain. ho tla mpefala. Li-ceramics tsa SiC tse sa hatelletsoeng, li-ceramics tse chesang tsa isostatic calcined SiC le li-ceramics tsa sintered SiC li na le litšobotsi tse fapaneng.
Reactive sintering silicon carbide producers: Mohlala, SiC porcelain boemong ba calcined relaine density le matla a ho kobeha, ho penya ho penya ho chesang le isostatic pressing calcination li ngata, 'me reactive sintering SiC e batla e le tlase. Ka nako e ts'oanang, thepa ea 'mele ea SiC porcelain e fetoha ka phetoho ea calcination modifier. The non-pressing sintering, hot press sintering and reaction sintering of SiC porcelain na le molemo alkaline resistance and acid resistance, empa karabelo sintered SiC porcelain e na le ho hanyetsa ka matla ho HF le tse ling tse matla haholo asiti kutu. Ha mocheso oa tikoloho o le ka tlase ho 900, matla a ho kobeha a porcelain e ngata ea SiC a phahame haholo ho feta mocheso o phahameng oa sintered porcelain, 'me matla a ho kobeha a sintered SiC porcelain a theoha haholo ha a feta 1400. (Sena se bakoa ke tšohanyetso ho theoha matla a ho kobeha ha tekanyo e itseng ea khalase ea laminated Si ho feta mocheso o itseng 'meleng oa calcined Ts'ebetso e phahameng ea mocheso oa li-ceramics tsa SiC sintered ntle le khatello calcination le tlas'a chesang kamehla static khatello e haholo angoa ke mefuta ea additives.
Nako ea poso: Nov-07-2023