Muzana ramakore rechi21, nekuvandudzwa kwesainzi uye tekinoroji, ruzivo, simba, zvinhu, biological engineering yave mbiru ina dzekuvandudzwa kwehuwandu hwemagariro emazuva ano, silicon carbide nekuda kwekugadzikana kwemakemikari zvivakwa, yakakwirira yekupisa conductivity, kupisa kwekuwedzera coefficient. diki, diki density, yakanaka kupfeka kuramba, yakakwirira kuoma, yakakwirira mechanical simba, kemikari corrosion resistance uye humwe hunhu, kukurumidza kukura mumunda wemidziyo, Inoshandiswa zvakanyanya muceramic ball bearings, mavharuvhu, semiconductor zvinhu, gyro, yekuyeresa chiridzwa, aerospace uye dzimwe minda.
Silicon carbide ceramics yakagadzirwa kubva kuma1960s. Pakutanga, silicon carbide yainyanya kushandiswa mumichina yekukuya zvinhu uye refractories. Nyika dzepasirese dzinokoshesa zvikuru kugadzirwa kwemakeramiki emhando yepamusoro, uye ikozvino haisi kungogutsikana chete nekugadzirira kwechinyakare silicon carbide ceramics, kugadzirwa kwepamusoro-tech mabhizinesi emakeramiki anokura nekukurumidza, kunyanya munyika dzakabudirira. Mumakore achangopfuura, multi-phase ceramics yakavakirwa paSIC ceramics yakaonekwa imwe mushure meimwe, ichivandudza kuoma uye kusimba kwe monomer zvinhu. Silicon carbide main minda mana ekushandisa, kureva, inoshanda ceramics, advanced refractory zvinhu, abrasives uye metallurgical raw materials.
Silicon carbide ceramics ine yakanakisa kupfeka kuramba
Silicon carbide ceramics chigadzirwa ichi chakadzidzwa uye chakatemwa. Kupfeka kusamira kwesilicon carbide ceramics chigadzirwa ichi chakaenzana ne266 times of manganese simbi, yakaenzana ne1741 times of high chromium cast iron. Kuramba kupfeka kwakanaka kwazvo. Zvichiri kugona kutichengetera mari yakawanda. Silicon carbide ceramics inogona kushandiswa nguva dzose kweanopfuura makore gumi.
Silicon carbide ceramics ine simba rakawanda, kuomarara kwepamusoro uye huremu huremu
Serudzi rutsva rwezvinhu, kushandiswa kwesilicon carbide ceramics ichi chigadzirwa kusimba kwakanyanya, kuomarara kwakanyanya, huremu zvakare hwakareruka, akadaro silicon carbide ceramics mukushandiswa, kuisirwa uye kutsiva kwezviri pamusoro kuchava nyore.
Rusvingo rwemukati rwesilicon carbide ceramic yakatsetseka uye haivharidzi hupfu
Silicon carbide ceramics chigadzirwa ichi chinopiswa mushure mekupisa kwepamusoro, saka chimiro chesilicon carbide ceramics chakanyanya kusimba, iyo yepamusoro inotsvedza, kunaka kwekushandisa kuchave kwakanyanya kunaka, saka kushandiswa mumhuri, runako ruchanyanya kunaka.
Mutengo wesilicon carbide ceramics wakaderera
Mari yekugadzira silicon carbide ceramics pachayo ishoma, saka isu hatidi kutenga mutengo wesilicon carbide ceramics inodhura zvakanyanya, saka kumhuri yedu, asi zvakare inogona kuchengetedza mari yakawanda.
Silicon carbide ceramic application:
Silicon carbide ceramic bhora
Silicon carbide ceramic bhora ine yakanakisa michina zvivakwa, yakanakisa oxidation kuramba, yakakwira abrasion kuramba uye yakaderera friction coefficient. Silicon carbide ceramic bhora kusimba kwekushisa kwakanyanya, zvakajairika ceramic zvinhu pa1200 ~ 1400 madhigirii Celsius simba richaderedzwa zvakanyanya, uye silicon carbide pa1400 madhigirii Celsius simba rekukotamisa ichiri kuchengetedzwa pamwero wepamusoro we500 ~ 600MPa, saka tembiricha yayo yekushanda inogona kusvika. 1600 ~ 1700 madhigirii Celsius.
Silicon carbide composite zvinhu
Silicon carbide matrix composites (SiC-CMC) yakashandiswa zvakanyanya mumunda weaerospace kune yavo yakanyanya tembiricha yekupisa zvimiro nekuda kwekuomarara kwazvo, kusimba kwepamusoro uye kwakanakisa oxidation kuramba. Iyo nzira yekugadzirira yeSiC-CMC inosanganisira fiber preforming, yakanyanya tembiricha kurapwa, mesophase coating, matrix densification uye post-kurapa. Yakakwirira simba kabhoni faibha ine simba rakawanda uye kusimba kwakanaka, uye muviri wakagadzirwa wakagadzirwa nawo une yakanaka mechanicha zvinhu.
Mesophase coating (kureva, interface tekinoroji) ndiyo yakakosha tekinoroji mugadziriro yekugadzirira, kugadzirira kwemesophase nzira dzekupfekedza dzinosanganisira makemikari vapor osmosis (CVI), kemikari vapor deposition (CVD), sol-sol nzira (Sol-gcl), polymer. impregnation cracking method (PLP), iyo inonyanya kukodzera kugadzirira kwesilicon carbide matrix composites ndiyo CVI nzira uye PIP nzira.
Interfacial coating zvinhu zvinosanganisira pyrolytic kabhoni, boron nitride uye boron carbide, pakati payo boron carbide serudzi rweoxidation resistance interfacial coating yakabhadharwa zvakanyanya uye zvakanyanya. SiC-CMC, iyo inowanzo shandiswa mumamiriro eoxidation kwenguva yakareba, inodawo kurapwa neoxidation resistance, kureva kuti, dense silicon carbide ine ukobvu hunosvika 100μm inoiswa pamusoro pechigadzirwa neCVD process. kuvandudza kwayo-yepamusoro-tembiricha oxidation kuramba.
Nguva yekutumira: Feb-14-2023