gesintertes

Gesintertes refers to components and materials produced by the sintering process, a solid-state densification technique used in powder metallurgy and ceramics. In sintering, powdered constituents are heated to a temperature below their melting point, enabling diffusion at particle contacts to bond particles and reduce porosity, producing a coherent solid body.

The typical process includes preparing a powder mixture, shaping it by pressing or molding to the desired geometry, and heating in a controlled atmosphere to a sintering temperature for a defined time. Post-sintering steps may include hot isostatic pressing to close remaining porosity, followed by machining or surface finishing. The final density and mechanical properties depend on temperature, time, pressure, particle size, and composition.

Gesintertes can be metal-based, ceramic-based, or composite. Common metals include steel, copper, aluminum, and cemented carbide (tungsten carbide with a metallic binder). Ceramic sintered products include alumina, silicon nitride, and zirconia. Porosity can be adjusted for filtration or lightweight structures, or minimized for high strength and stiffness. Densification and property evolution are influenced by additives, binder removal during debinding, and processing atmosphere.

Applications include gears, bearings, dental implants, filters, heat exchangers, and various components where near-net-shape manufacturing, complex geometries, or tailored microstructures are advantageous. While sintering enables efficient material use and property customization, it requires specialized equipment and careful control of processing parameters to manage porosity, grain growth, and dimensional tolerances.