| 21. | During the second, most densification occurs, the structure recrystallizes and particles diffuse into each other.
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| 22. | The impact of the free fall creates stress waves that help in the densification of the soil.
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| 23. | The sample will then be cooled down and held at the second sintering temperature until densification is completed.
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| 24. | During the third, isolated pores tend to become spheroidal and densification continues at a much lower rate.
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| 25. | The densification occurs during sample pressing as the solution incorporates the pores between the powder particles and recrystallizes.
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| 26. | "What we're looking at is a new approach to the densification of propellants,"
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| 27. | The official plan calls for densification and infill of existing urban land, rather than acquiring more rural land.
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| 28. | Processes include melting, melt-flow, re-solidification, sintering and densification of the growing oxide.
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| 29. | For further densification, additional particle movement while the particle undergoes grain-growth and grain-shape changes occurs.
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| 30. | Defects can be caused by densification process, which may involve highly inhomogeneous strain fields, or by mold ejection.
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