Muzana ramakore rechi21, nekuvandudzwa kwesainzi uye tekinoroji, ruzivo, simba, zvinhu, biological engineering yave mbiru ina dzekuvandudzwa kwemagariro emazuva ano, silicon carbide nekuda kwekugadzikana kwemakemikari zvinhu, yakakwirira yekupisa conductivity, kupisa kwekuwedzera kweiyo coefficient yediki, diki density, yakanaka kupfeka kuramba, kuomarara kwepamusoro, kusimba kwemechani musimba rekugadzira, kugadzirwa kwekemikari kukurumidza kugadzirwa kwezvinhu, kugadzirwa kweceramic. bhora mabhengi, mavharuvhu, semiconductor zvinhu, gyro, kuyera chiridzwa, aerospace uye mamwe 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 ball yakakwirira tembiricha simba, zvakajairika zvedongo zvinhu pa 1200 ~ 1400 madhigirii Celsius simba achanyanya kuderedzwa, uye nesilicon carbide pa 1400 madhigirii Celsius kukotama simba richiri kuchengetwa pamwero wepamusoro 500 ~ 600MPa, saka kushanda kwayo tembiricha 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 kupfekedza nzira dzinosanganisira kemikari vapor osmosis (CVI), kemikari vapor deposition (CVD), sol-sol nzira (Sol-gcl), polymer impregnation cracking nzira (PLP), iyo inonyanya kukodzera kugadzirira kwesilicon carbide nzira yePVI uye matrix IP matrix.
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, dhizaini yesilicon carbide ine ukobvu hunosvika 100μm inoiswa pamusoro pechigadzirwa neCVD process kuti ivandudze iyo yakakwirira-tembiricha oxidation kuramba.
Nguva yekutumira: Feb-14-2023