1. Materials and properties

Ceramic crucibles are usually made of high-purity alumina (Al₂O₃), zirconium oxide (ZrO₂), silicate and other materials. These materials have excellent high temperature stability, corrosion resistance and oxidation resistance. Specifically:

• High temperature stability: Ceramic crucibles can maintain their shape and performance at very high temperatures, and are not easy to soften or melt, making them suitable for high temperature experiments and melting processes.


• Chemical inertness: They are resistant to corrosion by most chemicals, which makes them very useful in chemical experiments, avoiding unwanted reactions between container materials and reactants.


• Low thermal expansion coefficient: This property makes ceramic crucibles less likely to break when the temperature changes drastically, improving service life and safety.

2. Application areas

Ceramic crucibles have a wide range of applications:

• Laboratory: In the fields of chemistry, materials science, metallurgy, etc., it is used for melting, synthesis, purification and other processes of samples.


• Industry: In industries such as metal smelting, semiconductor manufacturing, and glass manufacturing, ceramic crucibles are used to carry and heat raw materials or intermediate products.


• High temperature treatment: For example, in heat treatment furnaces, ceramic crucibles can protect materials from contamination or oxidation at high temperatures.

3. Manufacturing process

The process of manufacturing ceramic crucibles includes the following steps:

• Powder preparation: crushing raw materials into fine particles to ensure uniformity and purity.


• Molding: molding powder into the shape of crucible by pressing or slip injection.


• Sintering: sintering at high temperature to increase mechanical strength and high temperature resistance.


• Post-processing: may include steps such as polishing and coating to improve surface quality or add functional coatings.

4. Maintenance and usage precautions

• Preheating: Heat slowly before use to avoid stress cracks caused by large temperature differences.


• Cleaning: Clean thoroughly after each use to prevent residue from affecting the next experiment or production.


• Storage: Store in a dry, vibration-free place to prevent breakage.

5. Development Trends

With the advancement of technology, ceramic crucibles are also constantly improving. For example, the application of composite materials makes ceramic crucibles not only excellent in high temperature resistance, but also enhances their toughness and impact resistance. In addition, the introduction of nanotechnology also provides new possibilities for the functionalization of ceramic crucibles, such as enhancing their thermal conductivity or electrical properties.