Quartz crucibles are containers made from high-purity quartz material, characterized by the following features:

1. High Purity: Typically made from quartz with a purity of 99.99% or higher, ensuring extremely low impurity content and chemical stability at high temperatures.
2. High Temperature Resistance: Capable of withstanding extremely high working temperatures, usually between 1000°C and 1450°C.
3. High Chemical Stability: Highly resistant to corrosion by most acids, alkalis, salts, and other chemical reagents.
4. Low Thermal Expansion Coefficient: Exhibits a low thermal expansion coefficient at high temperatures, preventing cracking due to temperature changes.

Applications

Due to their excellent properties, quartz crucibles are widely used in various fields, mainly including:

1. Semiconductor Industry:
   • Crystal Growth: Used in the Czochralski (CZ) method for growing single crystal silicon, an essential equipment in single crystal silicon production.
   • High Temperature Processing: Used in high-temperature processes of semiconductor materials, such as oxidation and diffusion.
2. Photovoltaic Industry:
   • Polycrystalline Silicon Ingot Casting: Used in the melting and casting process of polycrystalline silicon ingots, ensuring the high purity and quality of silicon material.
   • Wafer Manufacturing: Used in the production and processing of silicon wafers for melting and handling high-purity silicon materials.
3. Research and Laboratories:
   • High Temperature Experiments: Used in various high-temperature experiments, such as material synthesis, decomposition, and sintering.
   • Chemical Reactors: Used as high-temperature reactors in chemical experiments for conducting various high-temperature chemical reactions.