Research Article
Investigation of High-Temperature Wear Behaviour of AA 2618-Nano Si3N4 Composites Using Statistical Techniques
Table 2
Specimens’ densities and hardness.
| | Materials | (density)theoretical
g/cm3 | (density)Experimental
g/cm3 | (density)Relative
g/cm3 | Hardness, HV | % of raise in hardness |
| | AA 2618 | 3.71 | 3.76 | 97.1 | 81.4 ± 3.6 | 92.4 ± 1.6 | | AA 2618/1% silicon nitrate | 3.82 | 3.780 | 98.4 | 98.1 | 94.8 ± 1.9 | | AA 2618/2% silicon nitrate | 3.78 | 3.798 | 9.4 | 16.2 | 10 |
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