Sublimation is the direct transfer of a material from solid to gas without going through the liquid stage. Sublimation is an endothermic process that happens at temperatures and pressures below a material’s triple point, which corresponds to the lowest pressure at which the substance may exist as a liquid in its phase diagram. Sublimation has also been used as a catch-all phrase for a solid-to-gas transition (sublimation) followed by a gas-to-solid transition (deposition).
While vaporisation from liquid to gas occurs as evaporation from the surface if it occurs below the liquid’s boiling point and as boiling with the formation of bubbles in the liquid’s interior if it occurs at the boiling point, there is no such distinction for the solid-to-gas transition, which always occurs as sublimation from the surface.
Melamine Sublimation Furnace by Kejia Furnace is specially developed for the determination of industrial melamine content using the sublimation method; it can also be disassembled and used separately, and is suitable for sublimation, roasting, sintering, heat treatment, brazing and other experiments.
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