Silicon carbide ceramic tekinoroji uye mashandisiro ayo mumunda we photovoltaic

I. Silicon carbide chimiro uye zvivakwa

Silicon carbide SiC ine silicon uye kabhoni. Iyo yakajairika polymorphic komputa, kunyanya inosanganisira α-SiC (yakakwira tembiricha yakagadzikana mhando) uye β-SiC (yakaderera tembiricha yakagadzikana mhando). Kune anopfuura mazana maviri emapolymorphs, pakati pawo 3C-SiC ye β-SiC uye 2H-SiC, 4H-SiC, 6H-SiC, uye 15R-SiC ye α-SiC inomiririra.

Mufananidzo SiC polymorph chimiro Kana tembiricha iri pasi pe1600 ℃, SiC iripo muchimiro che β-SiC, inogona kugadzirwa kubva musanganiswa wakapfava wesilicon uye kabhoni patembiricha ingangoita 1450 ℃. Kana yakakwira kupfuura 1600 ℃, β-SiC inoshanduka zvishoma nezvishoma kuita mapolymorphs akasiyana e-α-SiC. 4H-SiC iri nyore kugadzira kutenderedza 2000 ℃; 6H uye 15R polytypes zviri nyore kugadzira pakupisa kwakanyanya pamusoro pe2100 ℃; 6H-SiC inogona zvakare kuramba yakagadzikana patembiricha iri pamusoro pe2200 ℃, saka inowanzoitika mumaindasitiri ekushandisa. Yakachena silicon carbide ikristaro isina ruvara uye yakajeka. Indasitiri silicon carbide haina ruvara, yero yero, yakasvibira yakasvibira, yakasvibira, yebhuruu, yakasviba bhuruu uye kunyange dema, nedhigirii rekubuda pachena richidzikira. Indasitiri yeabrasive inokamura silicon carbide muzvikamu zviviri zvinoenderana neruvara: dema silicon carbide uye yegirini silicon carbide. Asina mavara kune akasviba egirinhi anotsanangurwa segirini silicon carbide, uye mwenje webhuruu kune iwo madema anotsanangurwa sedema silicon carbide. Ose ari maviri nhema silicon carbide uye yegirini silicon carbide ari α-SiC hexagonal makristasi. Kazhinji, silicon carbide ceramics inoshandisa green silicon carbide poda semidziyo.

2. Silicon carbide ceramic kugadzirira maitiro

Silicon carbide ceramic material inogadzirwa nekupwanya, kukuya uye kuisa silicon carbide mbishi zvinhu kuti uwane maSiC particles ane yunifomu particle size distribution, and then pressing the SiC particles, sintering additives and temporary adhesives in a green blank, and then sintering at high tembiricha. Nekudaro, nekuda kweiyo yakakwira covalent bond maitiro eSi-C zvisungo (~ 88%) uye yakaderera diffusion coefficient, rimwe rematambudziko makuru mugadziriro yekugadzirira ndiko kuoma kwe sintering densification. Nzira dzekugadzirira dzepamusoro-density silicon carbide ceramics dzinosanganisira reaction sintering, kusamanikidzwa sintering, mhepo yekumanikidza sintering, kupisa kudzvanya sintering, recrystallization sintering, kupisa isostatic kudzvanya sintering, spark plasma sintering, nezvimwe.

Nekudaro, silicon carbide ceramics ine dhizaini yekushomeka kwepasi kutsemuka, ndiko kuti, brittleness yakakura. Nechikonzero ichi, mumakore achangopfuura, multiphase ceramics yakavakirwa nesilicon carbide ceramics, senge faibha (kana ndebvu) kusimbisa, heterogeneous particle dispersion kusimbisa uye gradient functional materials zvakaonekwa imwe pashure peimwe, ichivandudza kuoma uye simba re monomer zvinhu.

3. Kushandiswa kwesilicon carbide ceramics mumunda we photovoltaic

Silicon carbide ceramics ine yakanakisa corrosion kuramba, inogona kuramba kukukurwa kwemakemikari zvinhu, kuwedzera hupenyu hwesevhisi, uye haizobudise makemikari anokuvadza, anosangana nekuchengetedzwa kwezvakatipoteredza zvinodiwa. Panguva imwecheteyo, silicon carbide boat inotsigira zvakare ine zvakanakira mutengo. Kunyangwe mutengo wesilicon carbide zvinhu pachawo wakakwira, kusimba uye kugadzikana kwavo kunogona kuderedza mari yekushandisa uye kutsiva frequency. Mukufamba kwenguva, vane zvikomborero zvepamusoro zvehupfumi uye vakave zvigadzirwa zvepamusoro mu photovoltaic boat support market.

Kana silicon carbide ceramics inoshandiswa sekiyi inotakura zvinhu mukugadzira mafotovoltaic maseru, zvitsigiso zvechikepe, mabhokisi ezvikepe, mapombi ekuisa uye zvimwe zvigadzirwa zvinogadzirwa zvine kugadzikana kwakanaka kwekupisa, hazvina kuremara pakupisa kwakanyanya, uye hazvina zvinokuvadza zvinosvibisa. Ivo vanogona kutsiva iyo ikozvino inowanzoshandiswa quartz boat inotsigira, mabhokisi ezvikepe, uye pombi fittings, uye vane zvakakosha mutengo zvakanakira. Silicon carbide bhoti inotsigira inogadzirwa nesilicon carbide sechinhu chikuru. Kana ichienzaniswa neyechinyakare quartz bhoti inotsigira, silicon carbide bhoti inotsigira ine zvirinani kugadzikana kwemafuta uye inogona kuchengetedza kugadzikana munzvimbo dzakanyanya tembiricha. Silicon carbide boat inotsigira inoita zvakanaka munzvimbo dzekushisa kwepamusoro uye haisi nyore kukanganiswa nekupisa uye kuremara kana kukuvara. Iwo akakodzera maitiro ekugadzira anoda kupisa kwakanyanya kurapwa, izvo zvinobatsira kuchengetedza kugadzikana uye kuenderana kwemaitiro ekugadzira.

Hupenyu hwesevhisi: Zvinoenderana nekuongororwa kwemushumo wedata: Hupenyu hwesevhisi yesilicon carbide ceramics inodarika katatu iyo yezvitsigiro zvechikepe, mabhokisi ezvikepe, uye pombi yekumisikidza yakagadzirwa nezvinhu zvequartz, izvo zvinoderedza zvakanyanya kuwanda kwekutsiviwa kwezvinodyiwa.