Alumina keramikao se ituaiga o mea sima e masani ona faia i le alumini oxide (AI2O3), faʻaaogaina e fai ma mea faʻapipiʻi mo vaega eletise.Alumina keramikae lelei le amio, malosi faʻainisinia, ma le maualuga o le vevela. O ona uiga e avea ai ma se tasi o sima e sili ona faʻaaogaina i le fausaga, laei, ma siosiomaga pala.
1. Malosi maualuga
O le maaa o Rockwell o le HRA80-90, o le maaa e maualalo ifo nai lo taimane, e sili atu nai lo le ofuina o le ofuina o le sila ma le uamea.
2. Lelei le ofuina o laei
Fuaina e faʻalapotopotoga suʻesuʻe faʻapolofesa, o lona teteʻe o laei e tutusa ma le 266 taimi ole uʻamea manganese. Gaoming lafo uʻamea 171.5 taimi, e tusa ai ma le sili atu ma le sefulu tausaga o tagata faatau suʻesuʻeina suʻesuʻega, i lalo o tulaga faigaluega lava e tasi, e mafai ona faʻalauteleina le ola tautua o meafaigaluega ia le itiiti ifo i le sefulu taimi sili atu.
3. Mamā mama
O lona mamafa o le 3.5g / cm3 e naʻo le afa o le sila, lea e mafai ona faʻaitiitia ai le mamafa o meafaigaluega.
| 技术参数(Parameter Fa'ainisinia) | ||
| 项目(Poloketi) | 单位(Iunite) | 数值(Numerical value) |
| 材料(mea) |
| Al2O3>99.5% |
| 颜色(lanu) |
| 白色,象牙色(Pa'epa'e, nifo elefane) |
| 密度(Density) | g/cm3 | 3.92 |
| 抗弯强度(Malosi Fusi) | MPa | 350 |
| 抗压强度(Malosi Compressive) | MPa | 2,450 |
| 杨氏模量(Young's Modulus) | GPa | 360 |
| 抗冲击强度(A'afiaga Malosi) | MPa m1/2 | 4-5 |
| 维泊尔系数(WeibullCoefficient) | m | 10 |
| 维氏硬度(Vickers Malosi) | HV 0.5 | 1,800 |
| 热膨胀系数(Fa'aalili Fa'aavela) | 10-6K-1 | 8.2 |
| 导热系数(Fa'avevela vevela) | W/mk | 30 |
| 热震稳定性(Fa'asa'o Te'i Fa'asao) | ∆T °C | 220 |
| 最高使用温度(Fa'aoga aupito maualugavevela) | °C | 1,600 |
| 20°C体积电阻(20°C Volume Resistivity) | Ωcm | >1015 |
| 电介质强度(Malosi Dielectric) | kV/mm | 17 |
| 介电常数(Dielectric Constant) | εr | 9.8 |
