Mumunda mukuru wesainzi yezvinhu, zviumbwa zvesimbi zvesilicon carbide zvave "zvinodadisa" muminda yakawanda yepamusoro-soro nekuda kwehunhu hwazvo hwakanaka hwakadai sekuomarara kwakanyanya, simba rakawanda, kugadzikana kwakanaka kwekupisa, uye kugadzikana kwemakemikari. Kubva mundege kusvika pakugadzira semiconductor, kubva kumotokari itsva dzesimba kusvika kumichina yeindasitiri, zviumbwa zvesimbi zvesilicon carbide zvine basa guru. Mukugadzirira zviumbwa zvesimbi zvesilicon carbide, nzira yekusinta ndiyo chinhu chikuru chinosarudza hunhu hwazvo uye huwandu hwekushandiswa kwazvo. Nhasi, tichaongorora maitiro ekusinta esilicon carbide uye totarisa pakutsvaga mabhenefiti akasiyana ekuita sintared reaction.silicon carbide ceramics.
Nzira dzakajairika dzekuchenesa silicon carbide
Kune nzira dzakasiyana-siyana dzekugadzira silicon carbide, imwe neimwe ine misimboti yayo uye hunhu hwayo.
1. Kupisa nekudzvanya: Nzira iyi yekupisa inosanganisira kuisa upfu hwesilicon carbide muforoma, kushandisa kudzvanya kwakati uku uchipisa, kuti upedze maitiro ekuumba nekupisa panguva imwe chete. Kupisa nekudzvanya kunogona kuwana simbi dzesilicon carbide dzakakora patembiricha yakaderera uye munguva pfupi, nehukuru hwezviyo zvakanaka uye hunhu hwakanaka hwemakanika. Zvisinei, michina yekupisa nekudzvanya inopisa yakaoma, mutengo weforoma wakakwira, zvinodiwa pakugadzira zvakaomesesa, uye zvikamu zvakaumbwa zviri nyore chete ndizvo zvinogona kugadzirwa, zvichikonzera kushanda kwakaderera kwekugadzira, izvo zvinoderedza kushandiswa kwayo kukuru.
2. Kupisa simbi yemhepo: Kupisa simbi yemhepo inzira yekusvibisa simbi yesilicon carbide nekudziisa kusvika 2000-2150 ℃ pasi pekumanikidzwa kwemhepo nemamiriro ekunze asina simba, nekuwedzera zvinhu zvinobatsira pakupisa. Yakakamurwa kuita maitiro maviri: kupisa kwakasimba uye kupisa kwemvura. Kupisa kwesimbi kunogona kuita kuti simbi yesilicon carbide ive nehuwandu hwakawanda, pasina girazi pakati pemakristaro, uye hunhu hwakanaka hwemakanika ekupisa kwakanyanya; Kupisa kwesimbi yemvura kune zvakanakira tembiricha yakaderera yekupisa, saizi diki yetsanga, uye simba rakavandudzwa rekukotama kwezvinhu uye kuomarara kwekupwanyika. Kupisa kwesimbi yemhepo hakuna zvirambidzo pachimiro nehukuru hwechigadzirwa, mari shoma yekugadzira, uye hunhu hwakanaka hwezvinhu zvakakwana, asi tembiricha yekupisa yakanyanya uye kushandiswa kwesimba kwakanyanya.
3. Kupisa kweReaction: Reaction sintered silicon carbide yakatanga kukurudzirwa naP. Popper muma1950. Maitiro aya anosanganisira kusanganisa carbon source nesilicon carbide powder, uye kugadzirira green body nenzira dzakadai se injection molding, dry pressing, kana cold isostatic pressing. Zvadaro, billet inopiswa kusvika pamusoro pe1500 ℃ pasi pe vacuum kana inert atmosphere, ipapo solid silicon inonyunguduka kuita liquid silicon, iyo inopinda mu billet ine pores kuburikidza ne capillary action. Liquid silicon kana silicon vapor inopinda chemical reaction neC mumuviri wegreen, uye in-situ inogadzirwa β - SiC inosangana ne original SiC particles mumuviri wegreen kuti igadzire reaction sintered silicon carbide ceramic materials.
Mabhenefiti eReaction Sintering Silicon Carbide Ceramics
Zvichienzaniswa nedzimwe nzira dzekugadzira sintering, reaction sintered silicon carbide ceramics ine mabhenefiti akawanda akakosha:
1. Kupisa kwakaderera kwekupisa uye mutengo unodzoreka: Kupisa kwekupisa kwekuita ...
2. Kugadzira saizi yepedyo, yakakodzera zvivakwa zvakaoma: Munguva yekupiswa kwechinhu, chinhu chacho hachinyanyi kuderera. Hunhu uhwu hunoita kuti chinyatsokodzera kugadzirira zvikamu zvikuru, zvakaumbwa nechimiro chakaoma. Zvingave zvikamu zvemakanika kana zvikamu zvikuru zvemidziyo yeindasitiri, simbi dzesilicon carbide dzinogona kusangana nemazvo nezvinodiwa zvekugadzira, kuderedza matanho ekugadzirisa anotevera, kuvandudza kushanda zvakanaka kwekugadzira, uye zvakare kuderedza kurasikirwa kwezvinhu uye kuwedzera kwemitengo kunokonzerwa nekugadzirisa.
3. Kuwanda kwesimba rezvinhu: Nekudzora mamiriro ekuita zvinonzwisisika, reaction sintering inogona kuita kuti silicon carbide ceramics ive nehukuru hwakanyanya. Chimiro chayo chakakora chinopa zvinhu izvi hunhu hwakanaka hwemakanika, senge simba rakakombama uye simba rekudzvanya, zvichiita kuti zvirambe zvakanaka pasi pesimba guru rekunze. Panguva imwe chete, chimiro chayo chakakora chinowedzerawo kuramba kwekupfekwa uye kuramba ngura kwezvinhu, zvichizvibvumira kushanda zvakadzikama munzvimbo dzakaoma dzekushanda uye kuwedzera hupenyu hwayo hwekushanda.
4. Kugadzikana kwakanaka kwemakemikari: Zvigadzirwa zvesimbi zvesilicon carbide zvine resistance yakasimba uye simbi dzakanyungudutswa. Mumaindasitiri akadai semakemikari nesimbi, michina inowanzofanira kusangana nemidziyo yakasiyana-siyana inoparadza. Zvigadzirwa zvesimbi zvesilicon carbide zvine resistance zvinogona kudzivirira kuparara kwemidziyo iyi, kuve nechokwadi chekuti michina inoshanda zvakanaka, kuderedza mari yekugadzirisa nekutsiva, uye kuvandudza kuenderera mberi kwekugadzirwa uye kugadzikana.
Inoshanda zvakanyanya muminda yakasiyana-siyana
Nezvakanakira izvi, simbi dzesilicon carbide dzinoshandiswa zvakanyanya muminda yakawanda. Muminda yemidziyo yemoto inopisa zvakanyanya, inogona kutsungirira mamiriro ekunze anodziya zvakanyanya uye kuona kuti makiln anoshanda zvakanaka; Muzvishandiso zvinopisa, kupisa kwavo kwakanaka uye kuramba ngura zvinoita kuti ive sarudzo yakanaka yezvinhu; Mumichina yekudzivirira zvakatipoteredza yakaita sema nozzles e desulfurization, inogona kudzivirira kuparadzwa kwesimbi dzinopisa uye kuona kuti michina inogara kwenguva refu ichishanda zvakanaka. Pamusoro pezvo, simbi dzesilicon carbide dzinoshandawo zvakanyanya muminda yepamusoro senge photovoltaics neaerospace.
Zvigadzirwa zvesimbi zvesilicon carbide zvine reaction zvine chinzvimbo chakakosha mumhuri yesimbi yesilicon carbide nekuda kwezvakanaka zvazvo zvakasiyana. Nekufambira mberi kwetekinoroji uye kugadziriswa kuri kuitwa, zvinotendwa kuti zvigadzirwa zvesimbi zvesilicon carbide zvine reaction zvicharatidza kushanda kwazvo muminda yakawanda, zvichipa rutsigiro rwakasimba rwezvinhu zvekusimudzira maindasitiri akasiyana-siyana.
Nguva yekutumira: Chikumi-13-2025