Page "Sintering" Paragraph 30
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Most, if not all, metals can be sintered.
This applies especially to pure metals produced in vacuum which suffer no surface contamination.
Sintering under atmospheric pressure requires the usage of a protective gas, quite often endothermic gas.
Many nonmetallic substances also sinter, such as glass, alumina, zirconia, silica, magnesia, lime, ice, beryllium oxide, ferric oxide, and various organic polymers.
Sintering, with subsequent reworking, can produce a great range of material properties.
Changes in density, alloying, or heat treatments can alter the physical characteristics of various products.
For instance, the Young's Modulus E < sub > n </ sub > of sintered iron powders remains insensitive to sintering time, alloying, or particle size in the original powder, but depends upon the density of the final product:
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