The metallurgy of the powders is the whole of the sciences and technology of manufacture of the parts lic Métal by Frittage of Poudre S.
As there is no fusion (sintering consists overall of a Soudage of the grains by diffusion and local fusion), this technique makes it possible less to heat (thus to make saving energy), and to have a very weak withdrawal with cooling. One can thus have rough surfaces functional of sintering, not requiring a later Usinage, which makes it possible to save material and Labor, therefore to reduce the costs as well as the impact Environnement Al
In addition, the grains keeping overall the same form after sintering, that makes it possible to control the microstructure of the part, and thus to have interesting mechanical properties without making thermomechanical treatment, from where an additional economy in energy expenditure and cost.
On the other hand, the development of the technique of manufacture requires an expensive study, and the metal powder, if it is very fine, must be preserved under a neutral atmosphere (for example Diazote) to avoid a Oxydation which could be catastrophic (Combustion, even Explosion).
See too
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