I le 21st seneturi, faatasi ai ma le atinaʻeina o saienisi ma tekonolosi, faʻamatalaga, malosi, meafaitino, inisinia olaola ua avea ma poutu e fa o le atinaʻeina o le gaosiga faʻaagafesootai i aso nei, carbide silicon ona o mea tau kemisi mautu, conductivity vevela maualuga, faʻateleina faʻalauteleina o le vevela o laʻititi, laʻititi laʻititi, lelei le faʻaogaina o mea, maualuga maualuga, malosi faʻainisinia maualuga, faʻamaʻi faʻamaʻi ma isi uiga, faʻavavevave atinaʻe i le fanua o meafaitino, Faʻaaogaina lautele i paʻu polo sima, valve, mea semiconductor, gyro, meafaigaluega fua, aerospace ma isi fanua.
Silicon carbide ceramics ua atiae talu mai le 1960s. I le taimi muamua, o le silicon carbide sa masani ona faʻaaogaina i mea e olo ai masini ma refractories. Atunuu i le lalolagi atoa o loʻo faʻapipiʻi taua tele i le gaosiga o meaʻai faʻapitoa, ma o lenei ua le gata ina faamalieina i le saunia o faʻamaʻi carbide silicon masani, o le gaosiga o atinaʻe faʻatekonolosi maualuga e atiaʻe vave, aemaise lava i atunuʻu atinaʻe. I tausaga talu ai nei, ua faʻaalia e le tele-phase ceramics i luga o le SIC ceramics le tasi ma le isi, faʻaleleia le malosi ma le malosi o mea monomer. Silicon carbide autu autu e fa o le faaaogaina, o lona uiga, ceramics galue, mea refractory maualuga, abrasives ma metallurgical mea mata.
Silicon carbide ceramics e sili ona lelei le ofuina
Silicon carbide ceramics lenei oloa ua suʻesuʻeina ma fuafuaina. O le ofuina o le ofuina o le silicon carbide ceramics o lenei oloa e tutusa ma le 266 taimi o le manganese sila, e tutusa ma le 1741 taimi o le chromium maualuga. E lelei tele le tete'e o le ofuina. E mafai lava ona faasaoina ai tatou le tele o tupe. Silicon carbide ceramics e mafai ona faʻaaogaina faʻaauau mo le sili atu i le sefulu tausaga.
Silicon carbide ceramics e maualuga le malosi, maualuga le maaa ma le mamafa mama
I le avea ai o se ituaiga fou o meafaitino, o le faʻaaogaina o le silicon carbide ceramics o lenei oloa malosi e maualuga tele, maualuga le maaa, mamafa foi e matua mama lava, o le silicon carbide ceramics o loʻo faʻaaogaina, faʻapipiʻiina ma le suia o luga o le a sili atu ona faigofie.
O le puipui totonu ole silicon carbide ceramic e lamolemole ma e le poloka ai le pauta
Silicon carbide ceramics o lenei oloa e faʻapupulaina pe a uma le vevela maualuga, o le mea lea o le fausaga o le silicon carbide ceramics e fai si mafiafia, o luga e lamolemole, o le matagofie o le faʻaaogaina o le a sili atu ona lelei, faʻaaogaina i totonu o le aiga, o le a sili atu le lelei o le matagofie.
E maualalo le tau o le silicon carbide ceramics
Ole tau ole gaosiga ole silicon carbide ceramics lava ia e laʻititi lava, o lea tatou te le manaʻomia ai le faʻatauina o le tau o le silicon carbide ceramics tau tele, o lea mo lo tatou aiga, ae mafai foi ona faʻasaoina se tele o tupe.
Silicon carbide ceramic talosaga:
Silicon carbide polo sima
Silicon carbide ceramic polo o loʻo i ai mea faʻainisinia sili ona lelei, sili ona lelei le faʻamaʻiina o le faʻamaʻiina, maualuga abrasion teteʻe ma le maualalo o le faʻafefe. Silicon carbide ceramic ball maualuga le vevela malosi, mea masani sima i 1200 ~ 1400 degrees Celsius malosi o le a matua faaitiitia, ma silicon carbide i le 1400 degrees Celsius punou malosi o loo tausia pea i se tulaga maualuga o le 500 ~ 600MPa, o lea e mafai ona oo atu lona vevela galue. 1600 ~ 1700 tikeri Celsius.
Silicon carbide mea tu'ufa'atasi
Silicon carbide matrix composites (SiC-CMC) ua faʻaaogaina lautele i le fanua o le aerospace mo latou fausaga vevela vevela maualuga ona o lo latou malosi maualuga, malosi maualuga ma sili atu le faʻamaʻiina o faʻamaʻi. O le sauniuniga o le SiC-CMC e aofia ai fiber preforming, togafitiga vevela maualuga, ufiufi mesophase, matrix densification ma post-togafitiga. O le maualuga o le malosi o le carbon fiber e maualuga le malosi ma le malosi lelei, ma o le tino faʻapipiʻiina na faia faʻatasi ai ma mea faʻainisinia lelei.
Mesophase coating (o lona uiga, tekinolosi faʻafesoʻotaʻi) o le tekinolosi autu i le faagasologa o sauniuniga, o le sauniuniga o metotia faʻapipiʻiina o le mesophase e aofia ai vailaʻau osmosis (CVI), vailaʻau vailaʻau (CVD), auala sol-sol (Sol-gcl), polymer auala ta'e impregnation (PLP), e sili ona talafeagai mo le saunia o le silicon carbide matrix composite o CVI auala ma auala PIP.
Interfacial coating mea e aofia ai pyrolytic carbon, boron nitride ma boron carbide, faatasi ai ma boron carbide o se ituaiga o oxidation tetee interfacial coating ua sili atu ona gauai atu. SiC-CMC, lea e masani ona faʻaaogaina i tulaga faʻamaʻi mo se taimi umi, e manaʻomia foʻi ona feagai ma togafitiga faʻamaʻi faʻamaʻi, o lona uiga, o se vaega o le silicon carbide mafiafia ma le mafiafia e tusa ma le 100μm o loʻo teuina i luga o le oloa e ala i le CVD process. e faʻaleleia ai lona faʻamaʻiina o le vevela maualuga.
Taimi meli: Feb-14-2023