Alumina Ceramic

Alumina ceramics, oo sidoo kale loo yaqaano dhoobada aluminium ama dhoobada sare ee alumina, ayaa ah alaabta dhoobada ah ee ugu badan ee loo isticmaalo goobta injineernimada.
Hordhac
Qaybaha Muhiimka ah: Wajiga ugu muhiimsan ee crystal waa α-alumina (α-Al₂O₃, qaab dhismeedka crystal corundum), iyadoo alaabta ugu weyn ee ceeriin ay tahay aluminium oxide. Nadiifintu waxay u dhaxaysaa 75% ilaa 99.9%. Sare u kaca nadiifnimada, ayaa ka sii fiicnaan doonta waxqabadka.
Astaamaha Muhiimka ah: Adkeydka Mohs wuxuu gaaraa heerka 9 (labaad kaliya ilaa dheeman), barta dhalaalashadu waa qiyaastii 2050 ℃, waxaana si adag loogu isticmaali karaa jawi 1600 ℃ ah muddo dheer; waxay leedahay dahaarka korantada oo aad u fiican, iska caabin u ah acid iyo alkali corrosion (marka laga reebo hydrofluoric acid iyo alkalis xoog leh oo xoog leh), kororka fidinta kulaylka hooseeya, caabbinta shoogga kulaylka wanaagsan, iyo kharashka guud wuxuu ka hooseeyaa dhoobada kale ee horumarsan sida silicon carbide iyo silicon nitride.