Sliding Friction Materials:
The largest application area for silicified graphite is in the production of sliding friction materials. Mechanical seals seal flow through the relative sliding of friction pairs. This sliding process generates frictional heat, with local temperatures reaching hundreds of degrees Celsius. The excellent properties of silicified graphite fully meet these requirements, making it an excellent sealing material, improving the friction parameters of mechanical seals, extending their service life, and expanding their application range.
High-Temperature Materials:
Silicified graphite has a long history of application as a high-temperature material. As early as the 1990s, Germany had already established partial applications for continuous casting molds, drawing dies, and hot pressing dies, which require high strength and strong thermal shock resistance. During the Soviet era, silicified graphite was used as a material for thermocouple protection tubes in molten iron and slag temperature measurement devices, and its use was promoted in the chemical, glass, and nonferrous metallurgical industries.
Applications in the Electronics Industry:
In the electronics industry, silicified graphite is primarily used as heat treatment fixtures and sensors for epitaxial growth of metal silicon wafers. Epitaxial growth is a process in which a single crystal material is deposited and grown on a substrate surface. Sensors fabricated using metal silicon wafers exhibit excellent mechanical and electrical properties. Heat treatment fixtures for electronic devices require excellent thermal conductivity, strong thermal shock resistance, resistance to deformation at high temperatures, minimal dimensional change, ease of processing, and resistance to corrosion by molten metal.
Biomaterials:
Siliconized graphite is the most successful example of a biomaterial used in artificial heart valves. Artificial heart valves open and close 40 million times annually. Therefore, the materials used to make these valves must not only be thrombogenic but also exhibit excellent wear resistance.