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Material item |
Aluminum oxide | ZTA | Zirconia |
Volume density(g/cm3) | 3.9 | 4.17 | 6.0 |
Vickers hardness(GPa) | 13 | 12 | 11 |
Bending strength(MPa) | 350 | 480 | 800 |
Fracture tenacity(MPa.m1/2) | 4 | 5 | 9 |
Young's modulus(GPa) | 370 | 330 | 200 |
Abrasion resistance(min/cm3) | 15 | 35 | 40 |
Linear expansion coefficient(40-800ºC)(×10-6/ºC) | 8.0 | 8.8 | 11.0 |
Roughness(Ra)(μm) | 0.3 | 0.2 | 0.1 |
Acid resistant(95%sulfuric acid,95ºC)(WT Loss,mg/cm2.d) | 0.25 | 0.2 | 0.04 |
Alkali resistance(30%caustic sodium,80ºC)(WT Loss,mg/cm2.d) | 0.05 | 0.06 | 0.08 |