Ulwakhiwo lwe-silicon carbide

Iintlobo ezintathu eziphambili ze-silicon carbide polymorph

Kukho malunga neentlobo ezingama-250 ze-silicon carbide ezi-crystalline. Ngenxa yokuba i-silicon carbide inoluhlu lwee-polytypes ezifanayo ezinesakhiwo sekristale esifanayo, i-silicon carbide ineempawu ze-polycrystalline efanayo.

I-silicon carbide (iMosanite) ayifumaneki lula eMhlabeni, kodwa ixhaphake kakhulu esibhakabhakeni. I-cosmic silicon carbide idla ngokuba yinxalenye eqhelekileyo yothuli lwendalo olujikeleze iinkwenkwezi zekhabhoni. I-silicon carbide efumaneka esibhakabhakeni nakwii-meteorites phantse isoloko iyi-β-phase crystalline.

I-A-sic yeyona ixhaphakileyo kwezi polytypes. Yenziwe kumaqondo obushushu angaphezu kwe-1700°C kwaye inesakhiwo sekristale esinama-hexagonal esifana ne-wurtzite.

I-B-sic, enesakhiwo sekristale efana ne-sphalerite efana nedayimani, yenziwe ngaphantsi kwe-1700°C.