Mainstream thermal field materials: C/C composite zvinhu

Carbon-carbon compositesimhando yekabhoni fiber composites, ine kabhoni faibha sechinhu chekusimbisa uye yakaiswa kabhoni sematrix zvinhu. Iyo matrix yeC/C composites ndiyo kabhoni. Sezvo inenge yakanyatso kuumbwa neye elemental kabhoni, ine yakanakisa kupisa tembiricha kuramba uye inogara nhaka yakasimba mechanicha zvinhu zvekabhoni fiber. Yakave yakagadzirwa mundima yekudzivirira kare.

Nzvimbo dzekushandisa:

C / C inoumbwa zvinhudziri pakati pemaindasitiri echeni, uye kumusoro kunosanganisira kabhoni faibha uye preform kugadzira, uye kuzasi kwekushandisa minda yakakura.C / C inoumbwa zvinhuanonyanya kushandiswa sezvinhu zvinodzivirira kupisa, friction materials, uye high mechanical performance materials. Iwo anoshandiswa mune aerospace (rocket nozzle huro linings, thermal dziviriro zvinhu uye injini inopisa zvimiro zvemukati), mabhureki zvinhu (yakakwira-kumhanya njanji, ndege mabhureki discs), photovoltaic thermal minda (insulation barrels, crucibles, gwara machubhu uye zvimwe zvikamu), biological body (artificial bones) nemimwe minda. Parizvino, zvemumbaC / C inoumbwa zvinhumakambani anonyanya kutarisisa pane imwechete link yezvakaumbwa zvinhu uye anowedzera kune yakakwira preform nzira.

C/C composite zvinhu zvine yakanakisa mashandiro anoita, ine yakaderera density, yakakwirira chaiyo simba, yakakwirira chaiyo modulus, yakakwira yekupisa conductivity, yakaderera thermal yekuwedzera coefficient, yakanaka kuputsika kusimba, kupfeka kuramba, ablation kuramba, etc. Kunyanya, kusiyana nezvimwe zvinhu, kusimba kweC/C composite zvinhu hakuzodzike asi kunogona kuwedzera nekuwedzera kwekushisa. Icho chinhu chakanakisa chinodzivirira kupisa, uye nekudaro chave kutanga kugadzirwa mumaroketi huro liners.

C/C composite material inogara nhaka yakanakisa mechanical zvivakwa uye kugadzirisa zvimiro zvekabhoni fiber, uye ine inodzivirira kupisa uye kushorwa kwekupokana kwegraphite, uye yave mukwikwidzi akasimba wezvigadzirwa zvegraphite. Kunyanya mundima yekushandiswa ine simba rakawanda rinodiwa - photovoltaic thermal field, iyo inodhura-inoshanda uye kuchengetedzwa kweC / C composite zvinhu zviri kuwedzera uye zvakanyanya kuoneka pasi pemahombe-akakura esilicon wafers, uye yava kudiwa kwakasimba. Pane zvinopesana, graphite yave yekuwedzera kune C / C inoumbwa zvinhu nekuda kwekushomeka kwekugadzira simba padivi rekupa.

Photovoltaic thermal field application:

Iyo inopisa munda ndiyo yese system yekuchengetedza kukura kwemonocrystalline silicon kana kugadzirwa kwepolycrystalline silicon ingots pane imwe tembiricha. Inobata basa rakakosha mukuchena, kufanana uye humwe hunhu hwemonocrystalline silicon uye polycrystalline silicon, uye ndeyekumberi kweiyo crystalline silicon yekugadzira indasitiri. Munda wekupisa unogona kukamurwa kuita thermal field system ye monocrystalline silicon single crystal yekudhonza vira uye thermal field system yepolycrystalline ingot furnace zvinoenderana nerudzi rwechigadzirwa. Sezvo mamonocrystalline silicon maseru ane yakanyanya kutendeuka mashandiro kupfuura polycrystalline silicon maseru, musika wekugovanisa monocrystalline silicon wafers unoramba uchiwedzera, nepo chikamu chemusika chepolycrystalline silicon wafers munyika yangu chave kuderera gore negore, kubva pa32.5% muna 2019 kusvika 9.3% muna 2020. Naizvozvo, vanogadzira minda yekupisa vanonyanya kushandisa iyo tekinoroji yemunda nzira yekudhonza kwekristaro imwe chete. furnaces.

Mufananidzo 2: Thermal munda mune yecrystalline silicon yekugadzira indasitiri cheni

Munda wekupisa unoumbwa nezvinhu zvinopfuura gumi nemaviri, uye iwo mana epakati zvikamu ndiwo crucible, gwara rechubhu, insulation cylinder, uye hita. Zvikamu zvakasiyana zvine zvinodiwa zvakasiyana zvezvinhu zvenyama. Nhamba iri pazasi idhizaini yedhizaini yenzvimbo inopisa yeimwe crystal silicon. Iyo crucible, iyo inotungamira chubhu, uye insulation cylinder ndiyo yakarongeka zvikamu zveiyo thermal field system. Basa ravo repakati ndere kutsigira iyo yese yepamusoro-yekupisa yekupisa munda, uye ivo vane zvakakwirira zvinodikanwa zve density, simba, uye thermal conductivity. Iyo heater ndiyo yakananga kupisa chinhu mumunda wekupisa. Basa rayo nderekupa simba rekupisa. Iyo inowanzo pikisa, saka ine zvakakwirira zvinodiwa zvezvinhu resistivity.