Research Article
Alumina-Based Ceramics for Armor Application: Mechanical Characterization and Ballistic Testing
Table 4
Apparent density, theoretical density, relative density, and porosity of the sintered compositions.
| | Composition | A92 | A96 | A99 |
| Apparent density
(, g·cm−3) | 3.65 ± 0.01 | 3.70 ± 0.01 | 3.85 ± 0.02 | Theoretical density
(, g·cm−3) | 3.70 ± 0.01 | 3.80 ± 0.01 | 3.96 ± 0.01 | | Relative density (, %) | 98.7 | 97.6 | 97.1 | | Porosity (ε, %) | 1.3 | 2.4 | 2.9 |
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