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Liquid phase sintering is the process of adding an additive to the powder which will melt before the matrix phase. The process of liquid phase sintering has three stages: rearrangement – As the liquid melts capillary action will pull the liquid into pores and also cause grains to rearrange into a more favorable packing arrangement.
Vacuum furnaces are used in a wide range of applications in both production industries and research laboratories. For example, a low-temperature vacuum oven can be used for drying biomass much more efficiently than drying alone. [3] Similarly, microwave-vacuum drying has shown potential for drying foods like cranberries. [4] [5]
Direct metal laser sintering [4] Filament winding, produces composite pipes, tanks, etc. [3] Fused deposition modeling [3] Inkjet Printing [5] Laminated object manufacturing [3] Laser engineered net shaping [3] Layered manufacturing [3] Rapid Induction Printing; Selective laser sintering [3] Spark plasma sintering; Stereolithography [3]
The process takes place under vacuum, which makes it suited to manufacture parts in reactive materials with a high affinity for oxygen, e.g. titanium. [3] The process is known to operate at higher temperatures (up to 1000 °C), which can lead to differences in phase formation though solidification and solid-state phase transformation. [4]
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PVD process flow diagram. Physical vapor deposition (PVD), sometimes called physical vapor transport (PVT), describes a variety of vacuum deposition methods which can be used to produce thin films and coatings on substrates including metals, ceramics, glass, and polymers. PVD is characterized by a process in which the material transitions from ...
An example of a material prepared using a tube furnace is the superconductor YBa 2 Cu 3 O 7. A mixture of finely powdered CuO, BaO, and Y 2 O 3 , in the appropriate molar ratio, contained in a platinum or alumina "boat," is heated in a tube furnace at several hundred degrees under flowing oxygen .
Vacuum distillation or distillation under reduced pressure is a type of distillation performed under reduced pressure, which allows the purification of compounds not readily distilled at ambient pressures or simply to save time or energy. This technique separates compounds based on differences in their boiling points.