G5 powder (100% anatase, s.s.a. = 370 m2/g) was previously compacted by uniaxially pressing the powder at 120 MPa and 500 MPa.The trend of the curves of the samples of G5, subjected to heating up to 700 °C, is shown in Fig. 5a. The curves obtained from G5 samples pressed at 120 MPa and 500 MPa have similar trends. However, the influence of the pressure can be noticed: due to the greater rearrangement of less packed particles, G5 pressed at 120 MPa initially shrank more in the temperature range from 20 to about 580 °C, temperature above which the slope of the curve of the sample pressed at 500 MPa became more marked. At 700 °C, the samples pressed at 120 MPa and500 MPa had a total shrinkage of ˜8% and ˜9% respectively, resulting in a slightly greater final contraction of the sample G5-500 MPa.
G5 powder (100% anatase, s.s.a. = 370 m2/g) was previously compacted by uniaxially pressing the powder at 120 MPa and 500 MPa.The trend of the curves of the samples of G5, subjected to heating up to 700 °C, is shown in Fig. 5a. The curves obtained from G5 samples pressed at 120 MPa and 500 MPa have similar trends. However, the influence of the pressure can be noticed: due to the greater rearrangement of less packed particles, G5 pressed at 120 MPa initially shrank more in the temperature range from 20 to about 580 °C, temperature above which the slope of the curve of the sample pressed at 500 MPa became more marked. At 700 °C, the samples pressed at 120 MPa and<br>500 MPa had a total shrinkage of ˜8% and ˜9% respectively, resulting in a slightly greater final contraction of the sample G5-500 MPa.
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