Raws li cov khoom tseem ceeb ntawm kev lag luam niaj hnub,silicon hlauyog dav siv nyob rau hauv ntau yam teb, xws li metallurgy, tshuaj, thiab electronics. Los ntawm kev txhim kho cov kev ua tau zoo ntawm cov hlau hauv steelmaking los ua cov khoom siv tseem ceeb hauv cov khoom siv hluav taws xob semiconductor, qhov zoo ntawm cov hlau silicon ncaj qha txiav txim siab qhov zoo ntawm cov khoom qis. Yog li ntawd, kev tsim cov txheej txheem kev tshawb fawb thiab kev txiav txim siab zoo tshaj plaws tau dhau los ua tus yuam sij los lav qhov kev ua haujlwm ruaj khov ntawm cov saw hlau.
Chemical Indicators
Chemical Composition Standards
Nyob rau hauv qhov kev txiav txim zoo ntawm silicon hlau, tshuaj muaj pes tsawg leeg yog qhov tseem ceeb tshaj plaws Performance index. Raws li kev lag luam tus qauv, cov ntsiab lus ntawm silicon siab - zoo silicon hlau feem ntau yuav tsum tau mus txog ntau tshaj 99%. Nyob rau tib lub sijhawm, cov ntsiab lus ntawm impurities xws li hlau, txhuas, calcium, magnesium thiab lwm yam teeb meem yog nruj me ntsis txwv rau qee yam.
Purity
Purity yog ib qho tseem ceeb ntsuas ntawm qhov zoo ntawmsilicon hlau. High purity silicon hlau impurity cov ntsiab lus yog tsawg, cov ntsuas yog nyob rau hauv txoj kab nrog tus qauv, muaj peev xwm muab tag nrho kev ua si rau nws lub cev thiab tshuaj zog; thaum uas tsis muaj purity ntawm tsawg- zoo silicon hlau, yuav ua rau cov khoom downstream kev ua tau zoo heev txo, cuam tshuam rau qhov kawg siv cov nyhuv.
Cov impurities
Cov impurity sib txawv muaj qhov sib txawv ntawm cov hlau silicon thiab nws cov khoom qis. Ntau cov hlau thiab txhuas cov ntsiab lus yuav txo cov purity ntawm silicon, cuam tshuam cov conductivity los yog mechanical zog ntawm semiconductor thiab photovoltaic silicon; calcium tuaj yeem ua rau muaj kev cuam tshuam sab hauv tshuaj lom neeg, yog li nws cov ntsiab lus yuav tsum tau tswj nruj me ntsis hauv cov ntawv thov. Nyob rau hauv siab -kawg daim ntawv thov ntawm semiconductor- qib silicon, kev tswj cov kab mob xws li boron thiab phosphorus yog qhov xav tau ntau dua, xav tau cov ntsiab lus boron <0.1 ppm thiab phosphorus cov ntsiab lus <0.5 ppm, vim tias cov ntsiab lus no tuaj yeem cuam tshuam rau cov khoom hluav taws xob ntawm silicon.
Lub cev muaj zog
Lub cev khoom Standards
Lub cev muaj zog ntawm silicon hlau, xws li particle loj, hardness thiab ntom, kuj yog ib qho tseem ceeb rau kev ntsuam xyuas zoo. Cov khoom no yuav tsum ua raws li cov qauv hauv lub tebchaws kom ntseeg tau tias lawv siv tau rau hauv cov xwm txheej sib txawv.
Particle loj faib
Qhov loj me me ntawm silicon hlau muaj qhov cuam tshuam loj rau nws cov ntawv thov kev ua haujlwm. Nyob ntawm kev lag luam thiab cov neeg siv cov kev xav tau, cov qauv tsim nyog rau particle loj faib tau teeb tsa. Piv txwv li, kev lag luam metallurgical feem ntau siv silicon hlau nrog qhov loj me ntawm 10-100 nm lossis tsawg dua kom tau raws li cov kev xav tau ntawm cov txheej txheem smelting.
Qhov ntom ntom, hardness kuaj thiab tshem tawm impurity
Silicon hlau muaj qhov ceev ntawm 2.33 g / cm³ thiab Mohs hardness txog 6.5. Cov khoom ntawm lub cev no yuav tsum tau kuaj xyuas los ntawm kev kuaj tshwj xeeb. Tsis tas li ntawd, kev tshuaj xyuas qhov muag lossis kev sib nqus sib nqus yog qhov yuav tsum tau kuaj xyuas kom ntseeg tau tias cov hlau silicon tsis muaj cov tsis muaj -hlau impurities pom ntawm qhov muag liab qab (xws li av, ntoo chips) lossis cov khoom siv hlau txawv teb chaws (xws li hlau).
Lwm Cov Kev Tswj Xyuas Zoo
Kev txiav txim zoo
Qhov tshwm sim yog tus qauv intuitive rau kev txiav txim siab zoo ntawm silicon hlau.High - zoo silicon hlaunto uniformity thiab smoothness, zoo ib yam xim, tsis muaj kab nrib pleb, npuas thiab lwm yam tsis xws luag. Cov yam ntxwv zoo li no tsis yog tsuas yog cuam tshuam txog qib ntawm kev tsim cov thev naus laus zis, tab sis kuj cuam tshuam ncaj qha rau cov khoom lag luam.
Hardness thiab Toughness
Ntxiv nrog rau cov txheej txheem hardness, siab - zoo silicon hlau kuj yuav tsum muaj qee yam toughness, tsis yooj yim rau deform lossis tawg. Zoo hardness thiab toughness los xyuas kom meej stability ntawm silicon hlau nyob rau hauv kev ua thiab siv cov txheej txheem.
Kev cuam tshuam ntawm tshauv, volatile teeb meem thiab ya raws
Tshauv, volatile teeb meem thiab noo noo cov ntsiab lus, kuj tseem muaj feem cuam tshuam rau qhov zoo ntawm silicon hlau. Ib qho ntxiv 1% ntawm cov hmoov tshauv yuav nce cov nyiaj ntawm silicon hlau siv nyob rau hauv blast furnace smelting los ntawm 2-2.5%; kev loj hlob ntawm silicon hlau tuaj yeem txiav txim los ntawm cov ntsiab lus tsis hloov pauv; thiab kev hloov pauv ntawm cov dej noo yuav ua rau qhov ntsuas tsis raug, cuam tshuam rau kev ruaj ntseg ntawm lub tshuab cua sov thiab qhov tseeb ntawm qhov ntsuas.
Cov Kev Xav Tau Tshwj Xeeb Zoo rau Daim Ntawv Thov Scenarios
Kev lag luam metallurgical
Hauv kev lag luam metallurgical, tsom ntawmsilicon hlauyog feem ntau ntawm silicon cov ntsiab lus thiab hlau thiab txhuas impurities, thiab qhov yuav tsum tau rau particle loj yog kuj xoob. Qhov no yog vim hais tias nyob rau hauv cov txheej txheem metallurgical, silicon hlau feem ntau plays lub luag hauj lwm ntawm deoxidizing thiab alloying, thiab txawv impurity txheem yuav ncaj qha cuam tshuam rau kev ua tau zoo ntawm hlau.
Organic silicon synthesis
Silicone synthesis txheej txheem, yuav tsum nruj me ntsis tswj calcium, magnesium thiab lwm yam alkali hlau impurities. Cov impurities no tuaj yeem ua rau catalyst lom, uas tuaj yeem cuam tshuam rau cov tshuaj tiv thaiv synthesis thiab, yog li, qhov zoo ntawm silicone khoom.
Semiconductor / Photovoltaic
Semiconductor thiab photovoltaic daim ntawv thov yuav tsum muaj siab purity ntawm silicon hlau, feem ntau yog siab tshaj 99.999% (5N qib). Tsis tas li ntawd, nws yuav tsum tau ua tiav ntxiv los ntawm kev ua kom huv los ntawm cheeb tsam melting lossis tshuaj vapor deposition (CVD), thiab kev tshawb pom qhov tseeb ntawm cov kab mob tseem ceeb heev kom ua tau raws li cov kev xav tau tshwj xeeb ntawm cov khoom siv hluav taws xob qib silicon.
Xaus
Nrog rau kev nce qib ntawm kev lag luam thev naus laus zis, cov kev xav tau rau qhov zoo ntawm silicon hlau yuav dhau los ua siab dua thiab siab dua. Cov tuam txhab lag luam yuav tsum txuas ntxiv txhim kho cov txheej txheem ntau lawm thiab tswj hwm qhov zoo; Thaum xaiv cov khoom siv hlau silicon, cov neeg siv yuav tsum tau tshawb fawb soj ntsuam cov ntsuas zoo raws li qhov xav tau tiag tiag los xyuas kom meej tias kev ua haujlwm zoo ntawm cov saw hlau.
