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Historically, liquid phase sintering was used to process ceramic materials like clay bricks, earthenware, and porcelain.Modern liquid phase sintering was first applied in the 1930s to materials like cemented carbides (e.g. WC-Co) for cutting tools, porous brass (Cu-Sn) for oil-less bearings, and tungsten-heavy alloys (W-Ni-Cu), but now finds applications ranging from superalloys to dental ...
For materials that are difficult to sinter, a process called liquid phase sintering is commonly used. Materials for which liquid phase sintering is common are Si 3 N 4, WC, SiC, and more. Liquid phase sintering is the process of adding an additive to the powder which will melt before the matrix phase.
Molecular crystals, liquid crystals, colloids, micelles, emulsions, phase-separated polymers, thin films and self-assembled monolayers all represent examples of the types of highly ordered structures which are obtained using these techniques. The distinguishing feature of these methods is self-organization in the absence of any external forces.
In this process, the metallic binder improves the toughness of the mould as well as the sintering quality in the liquid phase to fully dense material. [19] Moulds made of hard materials have a typical lifetime of thousands of parts (size dependent) and are cost-effective for volumes of 200-1000+ (depending upon the size of the part).
Because there is usually no pressing and sintering, glass-ceramics have no pores, unlike sintered ceramics. A wide variety of glass-ceramic systems exist, e.g., the Li 2 O × Al 2 O 3 × n SiO 2 system (LAS system), the MgO × Al 2 O 3 × n SiO 2 system (MAS system), and the ZnO × Al 2 O 3 × n SiO 2 system (ZAS system).
Adopted by Gen Z and Gen Alpha, it gained new prominence in 2024, according to Oxford, as a term used to capture concerns about the impact of consuming excessive amounts of "low-quality online ...
Recently, an EU IAPP research project has been financed with the aim of enhance mechanical modelling of ceramic forming in view of industrial applications. During cold powder compaction, a granular material is made cohesive through mechanical densification, a process for which modelling requires the description of the transition from a granular ...
New details about a study that warned against black plastic spatulas and other kitchen tools have come out. (Getty Creative) (Анатолий Тушенцов via Getty Images)