Research Article
Increasing Bending Strength of Porcelain Stoneware via Pseudoboehmite Additions
Table 1
Experimental physical and mechanical properties.
| | Pseudoboehmite addition (wt%) | Firing Temp. (°C) | Sample | Modulus of rupture (MPa) | Bulk density (g/cm3) | Young’s modulus (GPa) | Vickers microhardness (GPa) | Fracture
toughness
(MPa·m1/2) | Porosity
(%) |
| | 2 | 1150
1200
1250 | 1
4
7 | 92
56.9
42.7 | 2.1
2.0
1.9 | 49.5
57.5
64.34 | 6.1
7.0
6.8 | 1.4
1.6
1.7 | 5.6
6.6
7.6 |
| | 5 | 1150
1200
1250 | 2
5
8 | 81.2
94.5
107.4 | 2.2
2.2
2.1 | 40.5
60.2
62.2 | 6.8
6.8
6.9 | 1.5
1.7
1.5 | 5.1
7.8
7.5 |
| | 10 | 1150
1200
1250 | 3
6
9 | 76.3
70.2
101.8 | 2.0
2.1
2.0 | 32.8
53
56.8 | 6.4
7.1
6.4 | 1.2
1.5
1.5 | 7.9
9.4
12.6 |
| | M.Dondi et al. [12] | 1200 | | 50 | 2.4-2.5 | 79 | 6.5 | 1.2 | | | Zanelli et al. [4] | 1220 | | 42 | 2.2–2.4 | | | 1.1 | 4–12.8 |
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