silicon hlauyog sib txawv los ntawm cov ntsiab lus ntawm hlau, txhuas thiab calcium, thiab feem ntau yog muab faib ua553, 441, 421, 3303, thiab lwm yam, feem ntau vim hais tias cov ntsiab lus ntawm cov ntsiab lus no muaj kev cuam tshuam tseem ceeb ntawm lub cev thiab tshuaj lom neeg ntawm silicon, tshwj xeeb tshaj yog nyob rau hauv kev tsim khoom thiab kev siv, cov ntsiab lus ntawm cov impurities yuav tsum tau tswj nruj me ntsis.
Hlau (Fe) cov ntsiab lus:Hlau yog ib qho ntawm feem ntau impurities nyob rau hauv silicon. High hlau silicon (feem ntau yog hais txog cov ntsiab lus hlau ntau tshaj 1%) feem ntau yog siv hauv kev lag luam metallurgical, xws li ua cov hlau alloys, vim hais tias hlau tuaj yeem ua rau kom qhov kub thiab txias ntawm silicon thiab txhim kho nws cov khoom siv kho tshuab.
Aluminium (Al) cov ntsiab lus:Cov ntsiab lus ntawm aluminium cuam tshuam cov khoom hluav taws xob thiab tshuaj lom neeg ruaj khov ntawm silicon. High aluminium silicon feem ntau yog siv rau hauv kev lag luam foundry vim tias txhuas tuaj yeem txhim kho qhov fluidity thiab corrosion kuj ntawm silicon.
Calcium (Ca) cov ntsiab lus:Calcium yog lwm yam impurity hauv silicon, cuam tshuam cov khoom hluav taws xob thiab tshuaj lom neeg ruaj khov ntawm silicon. Cov ntsiab lus calcium ntau dhau tuaj yeem ua rau muaj kev phom sij ntawm silicon hauv kev siv cov khoom siv hluav taws xob.
Yog li ntawd, raws li cov ntsiab lus sib txawv ntawm cov impurity cov ntsiab lus hauv silicon, nws yog xim hlau silicon tuaj yeem muab faib ua ntau qib lossis qib kom tau raws li qhov xav tau ntawm kev lag luam sib txawv. Piv txwv li, cov qib hluav taws xob silicon feem ntau yuav tsum muaj cov ntsiab lus tsis zoo uas tsis tshua muaj siab, thaum qib metallurgical silicon tuaj yeem txais cov ntsiab lus tsis huv siab dua, uas tuaj yeem paub qhov txawv thiab txheeb xyuas los ntawm qib.
