Zirconium Tungstate Powder

Zirconium Tungstate Powder

Zirconium Tungstate is a ceramic compound composed of zirconium (Zr) and tungsten (W) oxide, known for its unique properties such as low thermal expansion and high density. It has a crystal structure that leads to its distinctive behavior, particularly its ability to maintain dimensional stability over a wide range of temperatures. Zirconium tungstate is typically synthesized by combining zirconium oxide (ZrO₂) and tungsten oxide (WO₃) at high temperatures in a controlled reaction process.

This compound is of particular interest in industries that require materials with minimal thermal expansion and high thermal stability. Its unique properties make it ideal for use in high-temperature environments, nuclear applications, and advanced ceramics.

Chemical and Physical Properties of Zirconium Tungstate Powder

Chemical Formula: ZrW₂O₈

Molecular Weight: 711.5 g/mol

Appearance: White or light gray crystalline powder

Density: 8.4 g/cm³

Melting Point: Approximately 2,500°C (highly stable at elevated temperatures)

Thermal Expansion: Extremely low, making it one of the materials with the lowest thermal expansion coefficients

Electrical Properties: Insulating, with very low electrical conductivity

Solubility: Insoluble in water and most acids

Radiation Resistance: Resistant to radiation damage, which makes it suitable for nuclear applications

Synthesis of Zirconium Tungstate Powder

Zirconium tungstate powder is typically synthesized by the solid-state reaction method:

Preparation of Precursors: The raw materials, zirconium oxide (ZrO₂) and tungsten oxide (WO₃), are precisely measured and mixed in the appropriate stoichiometric ratio.