Dab tsi yog qhov txawv ntawm silicon hlau nrog oxygen thiab tsis muaj oxygen

Hlau silicon yog cov khoom siv silicon uas muaj purity txog li 99.999%. Raws li cov khoom siv tseem ceeb ntawm kev lag luam niaj hnub no, nws tau siv dav hauv kev txiav - ntug teb xws li hnub ci photovoltaics, semiconductors, thiab kev sib koom ua ke.

Hauv kev tsim khoom lag luam, nyob ntawm seb cov pa oxygen tau qhia thaum lub sij hawm smelting, nws yog xim hlau silicon tuaj yeem muab faib ua oxygen -permeable metallic silicon thiab non-oxygen- permeable metallic silicon. Ob txoj hauv kev no tsis yog tsuas yog txiav txim siab txog microstructure ntawm cov khoom siv silicon, tab sis tseem cuam tshuam ncaj qha rau nws lub cev thiab tshuaj lom neeg thiab daim ntawv thov scenarios.

Oxygenated silicon hlauhais txog cov khoom siv silicon uas tsim los ntawm kev qhia cov pa oxygen thaum lub sij hawm smelting. Los ntawm cov tshuaj tiv thaiv redox nyob rau hauv lub qhov cub cua sov (xws li Si + O₂ → SiO₂), oxygen reacts nrog raw silicon los tsim ib tug ruaj khov silicon dioxide (SiO₂) txheej ntawm qhov chaw.

Cov txheej txheem no txhim kho kev tshem tawm impurity (xws li hlau, txhuas) thiab ua rau silicon nrog purity feem ntau ntawm 99.5% mus rau 99.9%. SiO₂ txheej txheej ua los ntawm insulator thiab corrosion-tiv thaiv barrier, distinguishing nws chemically thiab lub cev los ntawm tsis yog -oxygenated counterparts.

Tsis yog -oxygenated silicon hlau yog tsim yam tsis muaj kev qhia txog oxygen thaum ua haujlwm. Nws khaws cov qauv ntshiab silicon (Si) tsis muaj txheej txheej oxide, ua rau muaj tshuaj lom neeg ntau dua. Txoj kev no feem ntau yog siv rau siab - kev siv purity, qhov twg silicon tuaj yeem ua kom zoo ntxiv rau 99.9%–99.9999% purity (xws li 9N- qib silicon rau semiconductors).

Qhov tsis muaj oxygen tso cai rau kev tswj xyuas cov hluav taws xob zoo, ua rau nws tseem ceeb rau cov khoom siv hluav taws xob thiab cov khoom siv siab heev.

Raws li cov qauv, cov txheej txheem silicon dioxide nyob rau saum npoo ntawm los ntawm -oxygenated silicone muaj cov qauv tshuaj ruaj khov uas muab cov khoom zoo insulating thiab tshuaj stability. Ntawm qhov tod tes, cov qauv ntawm cov tsis yog -oxygenated silicon yog qhov sib xws thiab muaj tshuaj lom neeg ntau dua.

Nyob rau hauv cov nqe lus ntawm lub cev muaj zog, lub hardness thiab abrasion tsis kam ntawm oxygenated silicone feem ntau yog zoo dua li cov uas tsis yog -oxygenated silicone vim yog silicon dioxide txheej nyob rau saum npoo. Cov hluav taws xob conductivity ntawm tsis yog -oxygenated silicon yog qhov zoo.

Hais txog cov khoom siv hluav taws xob, cov khoom siv hluav taws xob ntawm silicon oxychloride ua rau nws siv dav hauv kev tsim cov khoom siv hluav taws xob sib xyaw kom zoo tiv thaiv tam sim no thiab luv luv - tshwm sim hauv Circuit Court. Tsis yog -peroxygenated silicon feem ntau yog siv los tsim cov khoom siv hluav taws xob hauv cov khoom siv hluav taws xob vim nws cov hluav taws xob zoo.

Qhov kev sib txawv no muaj qhov cuam tshuam tseem ceeb rau kev siv cov khoom siv. Hauv kev tsim cov khoom sib xyaw ua ke, cov khoom zoo insulating thiab ruaj khov ntawm los ntawm -oxygenated silicon yog qhov tseem ceeb rau kev ua kom cov nti ua tau zoo thiab kev ntseeg tau. Nyob rau hauv sib piv, lub siab conductivity ntawm unoxidized silicon ua rau nws tseem ceeb nyob rau hauv cov xwm txheej uas yuav tsum tau npaum conductivity, xws li nyob rau hauv tej yam transistor qauv.

Tsis tas li ntawd, cov tshuaj lom neeg ruaj khov ntawm tsis yog-perovskite silicon ua rau nws tswj hwm nws qhov kev ua tau zoo hauv qhov chaw hnyav, thaum tsis yog -perovskite silicon yog qhov zoo dua rau hauv cov ntawv thov uas xav tau kev ua tau zoo heev thiab ib puag ncig zoo.

Hauv kev tsim cov hlau silicon, ob txheej txheem ntawm oxygenation thiab de-oxygenation txhua tus muaj lawv tus kheej qhov zoo thiab tsim nyog rau cov kev xav tau ntau lawm thiab cov ntawv thov scenarios.

Kev tshem tawm impurity zoo heev: Cov txheej txheem oxygenation tuaj yeem tshem tawm cov impurities sai thiab zoo xws li hlau thiab txhuas los ntawmsilicon hlaulos ntawm cov tshuaj tiv thaiv redox. Piv nrog rau cov txheej txheem tsis yog -oxygenated, cov impurity tshem tawm efficiency yuav nce 40%-60%, ua kom cov silicon purity mus txog ntau tshaj 99.5%, nteg lub hauv paus rau zus tau tej cov ntaub ntawv zoo silicon.

Txhim khu kev ua tau zoo: Cov pa yog nkag rau hauv cov txheej txheem smelting, uas txhawb nqa cov cua sov ntawm cov silicon yaj thiab ua kom zoo dua qub ntawm qhov cub kub. Qhov no tsis tsuas yog pab kom luv luv lub voj voog smelting los ntawm 20% -30%, tab sis kuj txhim kho kev siv tus nqi ntawm cov khoom siv ntau lawm, uas yog qhov tsim nyog rau kev lag luam loj loj.

Optimizing cov khoom siv: Cov txheej txheem oxygenation muaj txiaj ntsig zoo rau cov qauv siv lead ua ntawm silicon lub cev, txhim kho kev ncaj ncees ntawm cov qauv siv lead ua thiab yog li txhim kho lub cev thiab tshuaj lom neeg ntawm silicon.

Yooj yim thiab yooj yim los tswj: Cov pa oxygen- cov txheej txheem pub dawb siv quartz xuab zeb thiab charcoal ua raw cov ntaub ntawv rau siab - qhov kub thiab txias, tshem tawm qhov xav tau ntawm cov pa oxygen thiab cov txheej txheem redox thiab ua kom yooj yim cov txheej txheem ntau lawm ntau dua 50%. Qhov no ua rau cov txheej txheem tsis yooj yim rau kev khiav lag luam thiab tswj tau yooj yim dua, tshwj xeeb tshaj yog tsim rau me me - nplai ntau lawm.

Kev txuag hluav taws xob thiab kev txo qis: Txij li cov pa oxygen- cov txheej txheem dawb tsis siv cov pa oxygen ntau, nws muaj qhov txiaj ntsig zoo ntawm cov nqi hluav taws xob. Cov khoom siv ntxiv thiab cov nqi kev nyab xeeb cuam tshuam nrog kev siv cov pa oxygen kuj tuaj yeem zam tau.

Qhov zoo tshaj plaws purity muaj peev xwm: cov txheej txheem tsis yog -oxygenation muaj txiaj ntsig zoo hauv kev npaj siab - purity silicon hlau. Los ntawm ntau-theem distillation, cheeb tsam melting thiab lwm yam tom qab purification txhais tau tias, lub purity ntawm silicon tuaj yeem nce mus rau 99.9%-99.9999%, uas ua tau raws li cov kev cai nruj ntawm semiconductors, photovoltaics thiab lwm yam high-end teb ntawm purity ntawm cov khoom.

Kev lag luam metallurgical (deoxidation thiab alloying)

Steelmaking, casting: raws li ib tug deoxidizer (xws li ferrosilicon, calcium silica-aluminium composite deoxidizer), los ntawm cov tshuaj tiv thaiv ntawm silicon thiab oxygen los tsim silicon dioxide (SiO₂) kom txo tau cov pa oxygen hauv cov hlau, thiab tib lub sij hawm, raws li ib tug alloying caij los tswj cov kev ua tau zoo ntawm cov hlau (xws li los txhim kho lub zog, hardness).

cam khwb cia hlau ntau lawm: siv nyob rau hauv kev kho mob ntawm cev xeeb tub, txhawb graphitization, txhim kho cov neeg kho tshuab zog ntawm cam khwb cia hlau (xws li toughness, hnav kuj).

Aluminium alloy additives: Silicon Aluminium alloy uas muaj silicon oxide yog ntxiv rau hauv aluminium smelting los tswj lub fluidity thiab lub zog ntawm txhuas kua.

Kev lag luam tshuaj (silicon compound npaj)

Kev tsim cov sodium silicate (dej iav): quartz xuab zeb uas muaj silicon oxide yog siv los ua raw khoom thiab reacted nrog caustic soda los tsim sodium silicate, uas yog siv nyob rau hauv lub tsim ntawm adhesives, detergents, thiab refractories.

Kev npaj ntawm silicone intermediates: Refining industrial silicon los ntawm ores uas muaj silicon oxide (xws li quartz), thiab tom qab ntawd ntxiv cov khoom siv silicone xws li roj silicone, silicone roj hmab, thiab lwm yam.

Refractories thiab Ceramics

Refractory bricks thiab kiln cov ntaub ntawv: Siv lub siab melting point yam ntxwv ntawm silicon dioxide (SiO₂), peb tsim siab -kub- resistant refractory ntaub ntawv rau siv nyob rau hauv metallurgical furnaces, iav kilns, thiab lwm yam high - cov khoom kub.

Ceramic raw cov ntaub ntawv: siv los ua ib feem ntawm blanks los yog glazes los txhim kho hardness thiab tshuaj stability ntawm ceramics.

Oxide - dawbsilicon hlau(cov ntsiab lus oxygen tsawg heev, purity feem ntau yog ntau dua lossis sib npaug li 99.9%) feem ntau yog siv hauv cov ntaub ntawv hluav taws xob, lub zog tshiab, siab -kev tsim khoom kawg thiab lwm yam uas yuav tsum tau muaj purity siab heev.

High- alloys kawg thiab cov ntaub ntawv tshwj xeeb

Aerospace alloys: Siv rau hauv kev npaj siab - purity silicon aluminium alloys (xws li aero- cov khoom xyaw), los txhim kho lub teeb yuag thiab corrosion tsis kam ntawm cov khoom.

Tshwj xeeb Ceramics thiab Coatings: siv los ua raw khoom rau precision ceramics (xws li silicon nitride ceramics) los yog rau siab -cov ntaub ntawv kub txheej (xws li silicide coatings los txhim kho hlau oxidation kuj).

Semiconductor thiab Electronics Kev Lag Luam

Chip Manufacturing: Semiconductor- qib siab- purity silicon (purity ntawm 99.999999999% lossis ntau dua, hu ua "9N silicon") yog tsim rau hauv silicon wafers los ntawm cov txheej txheem ntawm rub, hlais, photolithography, thiab lwm yam. lwm yam).

Kev lag luam photovoltaic (hnub ci).

Hnub ci vaj huam sib luag: Cov ntshiab polysilicon (purity ntawm 99.999% los yog ntau tshaj) yog tsim rau hauv ingots / rods los ntawm casting los yog siv lead ua rub cov txheej txheem, thiab txiav mus rau hauv photovoltaic hlwb los hloov lub teeb lub zog rau hauv hluav taws xob.

Hauv kev xaus, qhov sib txawv ntawm cov pa oxygenated thiab unoxygenated silicon, txhua tus muaj nws tus kheej cov khoom tshwj xeeb, txiav txim siab lawv qhov tsim nyog nyob rau hauv ntau qhov chaw thiab daim ntawv thov scenarios, muab ntau yam kev xaiv rau kev loj hlob ntawm cov niaj hnub electronics thiab semiconductor industries.