Silicon carbide (SiC) chinhu chesarudzo mumhando dzakasiyana dzemaindasitiri ekushandisa nekuda kwekuoma kwayo kwakanyanya, kugadzikana kwemafuta, uye kuramba kwemakemikari. Pakati pemhando dzayo dzakawanda, machubhu esilicon carbide anonyanya kukosheswa nekusimba uye kushanda munzvimbo dzakaoma. Ichi chinyorwa chichapinda mukati memaitiro akaoma ekugadzirasilicon carbide tubes, inotarisa pakugadzirwa kwe-reaction-sintered silicon carbide ceramic tubes.
Kunzwisisa Silicon Carbide
Tisati tapinda mukati mekugadzira maitiro, zvakakosha kuti tinzwisise kuti silicon carbide chii. Silicon carbide musanganiswa wesilicon uye kabhoni inozivikanwa nekusarudzika kwayo. Iyo semiconductor inopesana nekupisa kwakanyanya, oxidation, uye corrosion. Izvi zvivakwa zvinoita kuti silicon carbide machubhu ive yakanakira kunyorera mumaindasitiri akadai seaerospace, mota, uye makemikari kugadzirisa.
Kugadzirira kwezvinhu
Nhanho yekutanga mukugadzira silicon carbide machubhu ndeye kugadzirira iyo mbishi zvinhu. Yepamusoro-mhando yesilicon poda uye kabhoni poda ndizvo zvinodiwa pakugadzira yakakwirira-inoshanda reaction-sintered silicon carbide (RBSC). Kuchena kwehupfu idzi kwakakosha; chero tsvina ichakanganisa zvakanyanya kunaka kwechigadzirwa chekupedzisira. Mukuwedzera, iyo particle size kugoverwa kwehupfu hunofanira kunyatsodzorwa. Saizi yechidimbu yunifomu inovimbisa kuti zvinhu zvinopindirana zvakaenzana panguva yekupisa, zvichikonzera denser, yakasimba yekupedzisira chigadzirwa.
Ingredients uye Kusanganiswa
Kana zvinhu zvakabikwa zvagadzirwa, nhanho inotevera ndeyekurova uye kusanganisa. Izvi zvinosanganisira kunyatso kudzora chiyero chesilicon poda kune kabhoni poda. Reshiyo chaiyo yakakosha nekuti inosarudza maitiro emakemikari achaitika panguva yekupisa. Kunyatso kusanganisa hupfu kuti ive nechokwadi chekugovera kwakakosha kuti uwane inowirirana silicon carbide kuumbwa. Danho iri rakakosha; chero kusawirirana mumusanganiswa kunogona kukonzera kukanganisa mune yekupedzisira silicon carbide chubhu.
Kugadzira chimiro chepombi
Kana iyo batching uye kusanganisa maitiro kwapera, nhanho inotevera ndeyekugadzira pombi. Izvi zvinogona kuwanikwa kuburikidza nenzira dzakasiyana-siyana, kusanganisira inotonhora isostatic pressing (CIP) kana extrusion. CIP inosanganisira kushandisa yunifomu kumanikidza kune yakasanganiswa poda mufa, zvichikonzera compact uye yakanyatsogadzirwa chimiro. Neimwe nzira, extrusion inobvumira kuenderera kuumbwa kwezvinhu, izvo zvinonyanya kubatsira pakugadzira mapaipi akareba. Kusarudzwa kwemaitiro ekuumba kunoenderana nehukuru hunodiwa uye zvirevo zvechigadzirwa chekupedzisira.
Sintering process
Iyo sintering process ndipo panoitika mashiripiti. Iyo yakaumbwa silicon carbide chubhu inoiswa muchoto chepamusoro-soro ine yakanyatsodzorwa kupisa kumhanya uye kubata nguva. Munguva iyi, iyo silicon poda uye kabhoni poda inobata kemikari kuita dense silicon carbide chimiro. Sintering tembiricha inowanzova pakati pe 1400 ° C uye 2000 ° C, zvichienderana nekuumbwa kwakananga uye zvinodiwa zvechigadzirwa chekupedzisira. Iyi nhanho yakakosha nekuti inosarudza simba remuchina uye kugadzikana kwekupisa kwesilicon carbide chubhu.
Post-processing teknolojia
Mushure mekuita sintering kwapera, iyo silicon carbide chubhu inopinda mushure mekugadzirisa. Iyi nhanho inosanganisira machining uye kupenya kwepasi kuti isangane nedimensional chaiyo uye pamusoro pemhando yezvinodiwa. Machining inogona kusanganisira kucheka, kukuya kana kuchera kuti uwane zviyero zvinodiwa, nepo kupenya kwepamusoro kunowedzera kunaka uye kushanda kwechubhu. Kugadzirisa-kumashure kwakakosha kuti uve nechokwadi chekuti chigadzirwa chekupedzisira chinosangana nezviyero zveindasitiri uye zvakatemwa nevatengi.
Hunhu Kudzora Matanho
Munguva yese yekugadzira, isu tinoshandisa matanho ekudzora emhando yekuona kuti iyo silicon carbide machubhu inosangana nezvinodiwa. Izvi zvinosanganisira kuyedza kuchena kwezvakagadzirwa, kutarisa kuenderana kwemaitiro ekusanganisa, uye kuongorora panguva uye mushure mekupisa. Maitiro epamberi akadai seX-ray diffraction uye scanning electron microscopy anogona kushandiswa kuongorora iyo microstructure yesilicon carbide kuona kuti inosangana neinodiwa maitiro ekuita.
Kushandiswa kweSilicon Carbide Tube
Silicon carbide machubhu anoshandiswa mumhando dzakasiyana dzemashandisirwo nekuda kwehunhu hwawo hwakanaka. Muindasitiri yekugadzira makemikari, anoshandiswa kuendesa mvura inoparadza, nepo muchikamu chemuchadenga, anoshandiswa sezvikamu munzvimbo dzine tembiricha yepamusoro. Pamusoro pezvo, machubhu esilicon carbide ari kuwedzera kushandiswa mukushandiswa kwesimba, senge nyukireya reactor uye gasi turbines, uko kugona kwavo kumirisana nemamiriro akanyanya kukosha.
Muchidimbu
Kugadzirwa kwesilicon carbide machubhu inzira yakaoma uye yakapfava inoda kutarisisa kune zvakadzama pamatanho ese. Kubva pakugadzirira kwemhando yepamusoro yezvigadzirwa zvemhando kusvika kune kunyatso kudzora kwekuita sintering, nhanho imwe neimwe inoita basa rinokosha muhutano nekushanda kwechigadzirwa chekupedzisira. Sezvo maindasitiri achiramba achitsvaga zvinhu zvinokwanisa kumira nemamiriro ezvinhu akaomarara, kudiwa kwesilicon carbide chubhu kungangokura, zvichiita kuti zvinyanye kukosha kunzwisisa maitiro avo ekugadzira. Ingave ichishandiswa mumaindasitiri maapplication kana epamberi tekinoroji kushandiswa, silicon carbide machubhu anomiririra kufambira mberi kukuru musainzi yemidziyo, inopa kusimba uye kuvimbika munzvimbo dzakasiyana siyana.
Nguva yekutumira: Mar-26-2025