Alumina ceramicndi mtundu wa zinthu za ceramic zomwe zimapangidwa ndi aluminium oxide (AI2O3), yomwe imagwiritsidwa ntchito ngati insulating zida zamagetsi.Alumina ceramicali ndi madulidwe abwino, mphamvu zamakina, komanso kukana kutentha kwambiri. Mawonekedwe ake amapangitsa kuti ikhale imodzi mwama ceramic omwe amagwiritsidwa ntchito kwambiri pamapangidwe, mavalidwe, komanso malo owononga.
1. Kuuma kwakukulu
Kulimba kwa Rockwell ndi HRA80-90, kuuma kwake ndikotsika kuposa diamondi, kuposa kukana kwachitsulo chosamva kuvala ndi chitsulo chosapanga dzimbiri.
2. Wabwino kuvala kukana
Kuyesedwa ndi mabungwe ofufuza akatswiri, kukana kwake kumafanana ndi nthawi 266 zachitsulo cha manganese. Gaoming kuponyedwa chitsulo nthawi 171.5, malinga ndi zaka zopitilira khumi za kafukufuku wotsata makasitomala, pansi pazikhalidwe zomwezo, zimatha kuwonjezera moyo wautumiki wa zida zosachepera kakhumi.
3. Kulemera kopepuka
Kachulukidwe ake a 3.5g/cm3 ndi theka la chitsulo, amene akhoza kuchepetsa kwambiri katundu katundu.
| 技术参数(Technical Parameters) | ||
| 项目(Project) | 单位(Chigawo) | 数值(Nambala yamtengo) |
| 材料(Zinthu) |
| Al2O3> 99.5% |
| 颜色(Mtundu) |
| 白色, 象牙色(White,Ivory) |
| 密度(Kuchulukana) | g/cm3 | 3.92 |
| 抗弯强度(Flexural Strength) | MPa | 350 |
| 抗压强度(Compressive Strength) | MPa | 2,450 |
| 杨氏模量(Young's Modulus) | GPA | 360 |
| 抗冲击强度(Mphamvu Zamphamvu) | MPa m1/2 | 4-5 |
| 维泊尔系数(WeibullCoefficient) | m | 10 |
| 维氏硬度(Vickers Kuuma) | HV 0.5 | 1,800 |
| 热膨胀系数(Thermal Expansion Coefficient) | 10-6K-1 | 8.2 |
| 导热系数(Thermal Conductivity) | W/mk | 30 |
| 热震稳定性(Thermal Shock Stability) | ∆T °C | 220 |
| 最高使用温度(Kugwiritsa Ntchito KwambiriKutentha) | °C | 1,600 |
| 20°C体积电阻(20°C Kukaniza Voliyumu) | Ωcm pa | >1015 |
| 电介质强度(Mphamvu za Dielectric) | kV/mm | 17 |
| 介电常数(Dielectric Constant) | εr | 9.8 |
