Silicon carbide ceramic tekinoroji hamwe nikoreshwa ryayo mumashanyarazi

I. Imiterere ya karbide ya karubide n'imiterere

Silicon carbide SiC irimo silicon na karubone. Nibisanzwe bya polymorphic compound, cyane cyane harimo α-SiC (ubwoko bwubushyuhe bwo hejuru butajegajega) na β-SiC (ubwoko bwubushyuhe buke). Hano hari polymorphs zirenga 200, murizo 3C-SiC ya β-SiC na 2H-SiC, 4H-SiC, 6H-SiC, na 15R-SiC ya α-SiC bahagarariye abandi.

Igishushanyo cya SiC polymorph Imiterere Iyo ubushyuhe buri munsi ya 1600 ℃, SiC ibaho muburyo bwa β-SiC, ishobora gukorwa muburyo bworoshye bwa silikoni na karubone mubushyuhe bwa 1450 ℃. Iyo irenze 1600 ℃, β-SiC ihinduka buhoro buhoro muri polymorphs zitandukanye za α-SiC. 4H-SiC biroroshye kubyara hafi 2000 ℃; 6H na 15R polytypes ziroroshye kubyara ubushyuhe bwinshi hejuru ya 2100 ℃; 6H-SiC irashobora kandi kuguma ihagaze neza kubushyuhe buri hejuru ya 2200 ℃, kubwibyo bikunze kugaragara mubikorwa byinganda. Carbide nziza ya silicon ni ibara ritagira ibara kandi rifite umucyo. Inganda za silicon karbide ntizifite ibara, umuhondo wijimye, icyatsi kibisi, icyatsi kibisi, ubururu bwerurutse, ubururu bwijimye ndetse n’umukara, hamwe n’urwego rwo gukorera mu mucyo rugabanuka. Inganda zangiza zigabanya karibide ya silicon mu byiciro bibiri ukurikije ibara: karbide ya silicon yumukara na karubide yicyatsi kibisi. Icyatsi kibisi kibisi cyijimye cyashyizwe mubikorwa nka karbide yicyatsi kibisi, naho ubururu bwerurutse kugeza umukara bishyirwa mubikorwa bya karubide yumukara. Carbide yumukara wa silicon yumukara hamwe na karubide yicyatsi kibisi ni α-SiC ya kristu ya mpandeshatu. Mubisanzwe, silicon carbide ceramics ikoresha ifu ya silicon karbide nkibikoresho fatizo.

2. Silicon carbide ceramic inzira yo gutegura

Silicon carbide ceramic ceramic ikorwa mukujanjagura, gusya no gutondekanya ibyatsi bya silicon karbide kugirango ibone ibice bya SiC hamwe nogukwirakwiza ingano zingana, hanyuma ugakanda ibice bya SiC, gucumura ibyongeweho hamwe nibifata byigihe gito mubitaka byatsi, hanyuma bigacumura mubushyuhe bwinshi. Ariko, kubera ubwinshi bwimiterere ya covalent iranga inkwano ya Si-C (~ 88%) hamwe na coefficient de diffuzione nkeya, kimwe mubibazo nyamukuru mugutegura ni ingorane zo gucumura. Uburyo bwo gutegura uburyo bwiza cyane bwa silicon karbide ceramics burimo gucumura reaction, gucumura bidafite umuvuduko, gucumura ikirere cyumuyaga, gucumura bishyushye, gucumura byongeye, gucumura isostatike ishyushye, gucana plasma, nibindi.

Nyamara, silicon karbide ceramics ifite ibibi byo gukomera kuvunika gake, ni ukuvuga ubugome bukabije. Kubera iyo mpamvu, mumyaka yashize, ceramics ceramics ishingiye kuri ceramique ya silicon karbide, nka fibre (cyangwa whisker) gushimangira, gukwirakwiza ibice bya heterogeneous no gukwirakwiza ibikoresho bikora byagaragaye nyuma yikindi, bitezimbere ubukana nimbaraga zibikoresho bya monomer.

3. Gukoresha silicon carbide ceramics mumashanyarazi

Ceramics ya silicon karbide ifite imbaraga zo kurwanya ruswa, irashobora kurwanya isuri yibintu bya chimique, ikongerera igihe cyakazi, kandi ntishobora kurekura imiti yangiza, yujuje ibyangombwa byo kurengera ibidukikije. Mugihe kimwe, ubwato bwa silicon karbide nayo ifite ibyiza byiza byigiciro. Nubwo igiciro cyibikoresho bya karubide ya silicon ubwacyo kiri hejuru cyane, kuramba no gutuza birashobora kugabanya ibiciro byakazi hamwe ninshuro zasimbuwe. Mu gihe kirekire, bafite inyungu nyinshi mu bukungu kandi babaye ibicuruzwa nyamukuru ku isoko ryunganira ubwato bwamafoto.

Iyo silicon karbide ceramics ikoreshwa nkibikoresho byingenzi bitwara mugikorwa cyo gukora ingirabuzimafatizo zifotora, ubwato bushigikira, agasanduku k'ubwato, ibikoresho byo mu miyoboro hamwe nibindi bicuruzwa bikozwe bifite ubushyuhe bwiza bwumuriro, ntabwo bihinduka mubushyuhe bwinshi, kandi nta byangiza byangiza. Barashobora gusimbuza ubwato bwa quartz busanzwe bukoreshwa, agasanduku k'ubwato, hamwe nibikoresho bya pipe, kandi bifite inyungu zingenzi. Ubwato bwa silicon carbide ubwato bukozwe muri silicon karbide nkibikoresho byingenzi. Ugereranije nubwato gakondo bwa quartz, ubwato bwa silicon karbide ubwato bufite ubushyuhe bwiza kandi burashobora kugumana ituze mubushuhe bwo hejuru. Ubwato bwa karibide ya silicon ishigikira gukora neza mubushyuhe bwo hejuru kandi ntibibangamiwe nubushyuhe kandi byahinduwe cyangwa byangiritse. Birakwiriye mubikorwa byumusaruro bisaba kuvura ubushyuhe bwo hejuru, bifasha mukubungabunga ituze no guhuza ibikorwa byumusaruro.

Ubuzima bwa serivisi: Dukurikije isesengura ryamakuru yatanzwe: Ubuzima bwa serivisi ya silicon carbide ceramics burenze inshuro 3 ubwato bwubwato, udusanduku twubwato, hamwe nibikoresho bya pipe bikozwe mubikoresho bya quartz, bigabanya cyane inshuro zo gusimbuza ibyo kurya.