Table 3 Hardness and micro-hardness values of the sintered samples from 5 indents per composition.

From: Enhanced mechanical and optical properties of alumina ceramics via simultaneous magnesium, lanthanum, and zirconium oxide addition in spark plasma sintering

Hardness (GPa)

Microhardness (GPa)

Sample code

018.56 ± 0.3

19.36 ± 0.2

G: 100 M-100L-50Z

18.01 ± 0.5

18.18 ± 0.5

H: 200 M-100L-50Z

16.97 ± 0.2

16.6 ± 0.2

X:100 M-100L-100Z

17.51 ± 0.1

17.16 ± 0.1

Y: 200 M-100L-100Z

19.34 ± 0.2

19.14 ± 0.1

Z: 100 M-100L-300Z

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