Txhais ntawm Silicon Metal

Metallic silicon, tseem hu ua crystalline silicon los yog muaj silicon, feem ntau yog siv los ua ib qho ntxiv rau cov hlau tsis muaj hlau. Metallic silicon yog cov khoom smelted los ntawm quartz thiab coke nyob rau hauv lub cub hluav taws xob. Cov ntsiab lus ntawm cov khoom tseem ceeb silicon yog li ntawm 98% (nyob rau hauv xyoo tas los no, 99.99% Si cov ntsiab lus tseem muaj nyob rau hauv cov hlau silicon), thiab cov impurities seem yog hlau, txhuas, calcium, thiab lwm yam "Metallic silicon" (tseem hu ua industrial silicon nyob rau hauv kuv lub teb chaws) yog ib lub npe khoom uas tshwm nyob rau hauv nruab nrab -1960s. Nws qhov tshwm sim yog cuam tshuam nrog kev nce ntawm kev lag luam semiconductor. Kev coj ua thoob ntiaj teb yog faib cov khoom siv silicon rau hauv cov khoom siv hlau nplaum thiab cov khoom siv hluav taws xob semiconductor silicon. Metallic silicon yog cov khoom smelted los ntawm quartz thiab coke nyob rau hauv lub cub hluav taws xob. Cov ntsiab lus ntawm cov khoom tseem ceeb silicon yog li 98% (99.99% Si cov ntsiab lus tseem suav nrog hauv cov hlau silicon), thiab cov impurities ntxiv yog hlau, txhuas, calcium, thiab lwm yam. . Nws yog muag hauv polycrystalline thiab ib daim ntawv siv lead ua, qhov qub yog pheej yig thiab tom kawg yog kim. Nws tau muab faib ua ntau yam tshwj xeeb vim nws siv sib txawv. Raws li kev txheeb cais, lub ntiaj teb tau siv txog 500,{10}} tons ntawm hlau silicon hauv xyoo 1985, ntawm 60% yog siv rau txhuas alloys, tsawg dua 30% yog siv rau cov organic silicon, li 3% yog siv rau semiconductors , thiab tus so yog siv rau steel smelting thiab precision ceramics.