Hlau silicon thaiv feem ntau yog siv los ua ib qho ntxiv rau cov hlau tsis muaj hlau. Nws yog cov khoom tsis yog xim hlau, grey thiab xim hlau, tawv thiab nkig. Cov ntsiab lus ntawm silicon suav txog li 26% ntawm qhov loj ntawm lub crust; tus txheeb ze atomic mass yog 28.8. Qhov ceev yog 2.33g / cm3. Lub melting point yog 1410 degree, lub boiling point yog 2355 degree, thiab resistivity yog 2140Ω·m.
Silicon hlau 2202 3303 Hoobkas
Raws li cov ntsiab lus ntawm hlau, txhuas, thiab calcium nyob rau hauv cov hlau silicon thaiv, hlau silicon tuaj yeem muab faib ua ntau qib xws li 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101, thiab lwm yam. .
Silicon hlau 3303 441 Hoobkas
Industrially, silicon blocks feem ntau yog tsim los ntawm kev txo cov silica nrog cov pa roj carbon hauv lub cub hluav taws xob. Kev sib npaug tshuaj lom neeg: SiO22C → Si2CO Lub purity ntawm silicon tau los ntawm txoj kev no yog 97 ~ 98%, hu ua metallic silicon. Tom qab ntawd nws yog melted thiab recrystallized, thiab impurities raug tshem tawm nrog cov kua qaub kom tau nws cov hlau silicon nrog purity ntawm 99.7 mus rau 99.8%. Lub block silicon feem ntau yog tsim los ntawm silicon thiab yog li ntawd muaj cov khoom zoo sib xws rau silicon. Muaj ob lub allotropes, amorphous thiab crystalline. Amorphous yog grey-dub hmoov, uas yog ib hom microcrystalline.
Silicon hlau 441 2202 Hoobkas
Silicon block yog industrially purified elemental silicon, feem ntau yog siv rau zus tau tej cov organic silicon, kev npaj ntawm high-purity semiconductor cov ntaub ntawv, thiab kev npaj ntawm tshwj xeeb-purpose alloys. Feem ntau yog siv los ua antioxidant hauv kev lag luam refractory. Cov kev lag luam tseem ceeb ntawm cov hlau nplaum silicon yog raws li hauv qab no:
Silicon hlau 3303 2202 Hoobkas
Silicon hlau 2202 3303 Hoobkas
(1) Kev tsim cov roj hmab silicone, silicone resin, silicone roj thiab lwm yam silicones
Nws muaj elasticity zoo thiab kub-resistant thiab yog siv nyob rau hauv kev tsim cov khoom siv kho mob, high-temperature-resistant gaskets, thiab lwm yam. Silicone resin yog siv los tsim insulating xim, high-temperature resistant coatings, thiab lwm yam. Silicone roj yog oily. cov khoom uas nws viscosity tsawg cuam tshuam los ntawm qhov kub thiab txias. Nws tsim cov roj nplua nyeem, polishes, cov dej ntws tawm, cov kua dej dielectric, thiab lwm yam. Nws tuaj yeem ua tiav rau hauv cov dej tsis muaj xim thiab pob tshab thiab txau rau hauv cov tsev ua cov khoom siv dej tsis zoo-cov khoom nto.
Silicon hlau 441 2502 Hoobkas
Silicon hlau 2502 441 Hoobkas
(2) Kev tsim cov khoom siv hluav taws xob siab ntshiab los ntawm silicon blocks
Yuav luag tag nrho cov niaj hnub loj-loj sib xyaw circuits yog ua los ntawm high-purity metallic silicon, thiab high-purity silicon blocks kuj yog lub ntsiab raw khoom rau zus tau tej cov optical fibers. Nws tuaj yeem hais tau tias nws tau dhau los ua kev lag luam tseem ceeb hauv cov ntaub ntawv hnub nyoog.
Silicon hlau 2502 3303 Hoobkas
(3) Alloy npaj
Silicon block aluminium alloy yog ib qho alloy uas muaj ntau ntawm silicon. Silicon-aluminium alloy yog ib qho muaj zog sib xyaw deoxidizer. Nws tuaj yeem hloov cov ntshiab txhuas hauv cov txheej txheem steelmaking, txhim kho kev siv tus nqi ntawm deoxidizer, purify molten steel, thiab txhim kho qhov zoo ntawm cov hlau molten. Cov hlau tsis muaj qhov ntom ntom, me me thermal expansion coefficient, kev ua haujlwm zoo casting, thiab hnav tsis kam. Lub alloy castings cam khwb cia nrog nws muaj kev cuam tshuam tsis kam thiab zoo-siab ceev ceev, uas tuaj yeem ua rau lub neej ntev ntev. Feem ntau siv hauv kev tsim tsheb aerospace thiab kev lag luam automotive.
Kev tsim cov tshuaj silicon yog nqa tawm tsis tu ncua. Cov xwm txheej hauv lub tshuab hluav taws xob tsis tas mus li. Chemical silicon ntau lawm yog txheej txheem uas hluav taws xob hluav taws xob hloov mus rau hauv thermal zog nyob rau hauv lub cub hluav taws xob, thiab ces lub thermal zog yog siv los ncaj qha tshav kub cov ntaub ntawv los tsim tshuaj. Yog li ntawd, cov yam ntxwv ntawm hluav taws xob nyob rau hauv lub cub tawg yog ib qho tseem ceeb heev. Melting siv kaw arc ua haujlwm los tswj qhov kub ntawm lub cub tawg, txhim kho thermal efficiency, thiab txhim kho hluav taws xob siv hluav taws xob.