compactgrafiet

Compactgrafiet, or compact graphite, refers to a dense form of graphite produced by densifying graphite material to reduce porosity and increase bulk density. This densification can be achieved by hot pressing, hot isostatic pressing, extrusion of binder-containing precursors followed by carbonization, or direct densification of graphite powders. The result is a material with a relatively low porosity and a higher density than conventional expanded or flaky graphite grades.

The microstructure of compactgrafiet consists of graphitic layers arranged in a layered carbon network. This structure gives high thermal and electrical conductivity along the basal planes and good chemical inertness. The material maintains high temperature stability and mechanical integrity in inert or reducing environments. However, it is typically brittle and can be sensitive to oxidation at elevated temperatures in air, requiring protective atmospheres or coatings for high-temperature use.

Typical properties vary with grade and processing, but compactgrafiet generally offers high stiffness, good wear resistance, and low permeability to gases. Densities commonly exceed those of porous graphite grades, resulting in improved dimensional stability and strength in high-temperature applications. Thermal conductivity is high, supporting efficient heat transfer in furnace components and other heat-management parts. Electrical conductivity remains appreciable, enabling use in certain electrical or electronic contexts.

Applications focus on high-temperature industrial components such as crucibles, mold parts, seals, and furnace linings, as well as electrical contacts and specialized structural parts in environments where chemical inertness and heat resistance are required. Handling should follow standard safety practices for fine graphite powders to minimize inhalation risks.