Alumina keramikahe ʻano ʻano mea seramika i haku ʻia me ka alumini oxide (AI2O3), i hoʻohana ʻia ma ke ʻano he insulating mea no nā ʻāpana uila.Alumina keramikaloaʻa ka conductivity maikaʻi, ka ikaika mechanical, a me ke kūpaʻa wela kiʻekiʻe. ʻO kāna mau hiʻohiʻona e lilo ia i hoʻokahi o nā seramika i hoʻohana nui ʻia i ka hoʻolālā, ʻaʻahu, a me nā kaiapuni corrosive.
1. Ka paakiki kiekie
ʻO ka paʻakikī ʻo Rockwell ʻo HRA80-90, ʻoi aku ka paʻakikī ma mua o ke daimana, ʻoi aku ka nui ma mua o ke kūpaʻa ʻana o ke kila a me ke kila kila.
2. Kūleʻa maikaʻi i ka ʻaʻahu
Ana ʻia e nā ʻoihana noiʻi ʻoihana, ʻo kona kūpaʻa ʻaʻahu e like me 266 mau manawa o ke kila manganese. He 171.5 mau manawa, e like me kā mākou mau makahiki he ʻumi o ka nānā ʻana i ka mea kūʻai aku, ma lalo o nā kūlana hana like, hiki ke hoʻolōʻihi i ke ola lawelawe o nā mea hana ma kahi o ʻumi mau manawa.
3. Ke kaumaha māmā
ʻO kona mānoanoa o 3.5g/cm3 he hapalua wale nō ia o ke kila, hiki ke hoʻemi nui i ka ukana.
| 技术参数(Nā palena ʻenehana) | ||
| 项目(Pahana) | 单位(Ui) | 数值(Waiwai helu) |
| 材料(Material) |
| Al2O3>99.5% |
| 颜色(Kaula) |
| 白色,象牙色(Keʻokeʻo,ʻelepani) |
| 密度(Density) | g/cm3 | 3.92 |
| 抗弯强度(Ka Ikaika Pilikino) | MPa | 350 |
| 抗压强度(Ka Ikaika Hoʻopiʻi) | MPa | 2,450 |
| 杨氏模量(Young's Modulus) | GPa | 360 |
| 抗冲击强度(Ka ikaika o ka hopena) | MPa m1/2 | 4-5 |
| 维泊尔系数(WeibullKoefisi) | m | 10 |
| 维氏硬度(Vickers Hardness) | HV 0.5 | 1,800 |
| 热膨胀系数(Ka helu hoʻonui wela) | 10-6K-1 | 8.2 |
| 导热系数(Hana wela) | W/mk | 30 |
| 热震稳定性(Hoʻopaʻa Puʻu wela) | ∆T °C | 220 |
| 最高使用温度(Ka hoʻohana kiʻekiʻe loaMahana) | °C | 1,600 |
| 20°C体积电阻(20°C Volume Resistivity) | Ωcm | >1015 |
| 电介质强度(Ka ikaika dielectric) | kV/mm | 17 |
| 介电常数(Dielectric mau) | εr | 9.8 |
