Silicate Ceramics were the first technical ceramics developed to support early electrical technologies, including Magnesium Silicates (Steatite and Cordierite) and Mullite. At STC we import Grade A Lava (Hydrous Aluminum Silicate), a naturally occurring silicate material that is shares many of the performance advantages of the engineered silicates.
In general, Silicates are valuable for their good dielectric properties, resistance to thermal shock and high temperature performance. In recent years, these materials are seeing new applications based on their low RF loss factors and low thermal expansion.
These materials are a low cost alternative based on their simple natural ingredients and relatively simple processing steps.