Research Article
Synthesis and Characterization of Rutile Pigments with Cr and Nb
Table 3
An effect of calcination temperature on color properties of pigments Ti
0.85Cr
0.05Nb
0.10.
| (°C) | Anatase TiO2 | Hydrated anatase paste | | | | | (°) | | | | | (°) |
| 850 | 75.67 | −2.63 | 15.84 | 16.06 | 99.43 | 75.56 | −1.61 | 21.22 | 21.28 | 94.34 | 900 | 77.66 | 0.62 | 17.27 | 17.28 | 87.94 | 73.71 | 0.55 | 22.74 | 22.75 | 88.61 | 950 | 69.36 | 3.04 | 19.80 | 20.03 | 81.27 | 67.21 | 3.07 | 21.47 | 21.69 | 81.86 | 1000 | 59.48 | 7.21 | 27.88 | 28.80 | 75.50 | 50.57 | 6.23 | 19.46 | 20.43 | 72.25 | 1050 | 64.05 | 17.26 | 41.84 | 45.26 | 67.58 | 52.55 | 6.87 | 22.94 | 23.95 | 73.33 | 1100 | 60.40 | 21.74 | 43.18 | 48.34 | 63.28 | 52.15 | 11.99 | 28.18 | 30.62 | 66.95 | 1150 | 58.32 | 23.89 | 43.91 | 49.99 | 61.45 | 50.76 | 10.81 | 24.48 | 26.76 | 66.17 |
| (°C) | TiOSO4·2H2O | Hydrated Na2Ti4O9 paste | | | | | (°) | | | | | (°) |
| 850 | 73.36 | 1.17 | 25.79 | 25.82 | 87.40 | 72.84 | 2.06 | 38.94 | 38.99 | 86.97 | 900 | 77.26 | 3.56 | 35.90 | 36.08 | 84.34 | 72.29 | 2.02 | 37.59 | 37.64 | 86.92 | 950 | 75.40 | 5.32 | 37.78 | 38.15 | 81.98 | 69.85 | 1.75 | 35.21 | 35.25 | 87.15 | 1000 | 72.98 | 7.77 | 39.20 | 39.96 | 78.79 | 68.62 | 2.96 | 35.23 | 35.35 | 85.20 | 1050 | 71.26 | 12.33 | 41.51 | 43.30 | 73.46 | 68.82 | 3.32 | 35.20 | 35.36 | 84.61 | 1100 | 71.23 | 12.24 | 41.43 | 43.20 | 73.54 | 63.27 | 4.18 | 31.48 | 31.76 | 82.44 | 1150 | 67.70 | 14.77 | 41.06 | 43.64 | 70.22 | 58.26 | 1.50 | 29.16 | 29.20 | 87.06 |
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