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2. The different stages of solid phase sintering
2.1 Thermodynamic aspect. Causes
Consider a mole of copper (63.5 g), made up of 1 µm cubic grains, and the same mole of copper made up of a single grain (figure 7 ). These two systems differ in the areas of their solid-gas interfaces. The single grain has a lower specific surface area (surface area per unit mass) than the dispersed system. This decrease in surface area d A sg corresponds to a decrease in energy of the form γ sg d A sg . The proportionality coefficient γ sg ...
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The different stages of solid phase sintering