Cylindrical crucible is a high-temperature container with a standard cylindrical shape, which is widely used in materials science, chemical experiments, metallurgy and ceramic manufacturing.
- Definition and Characteristics
Geometric shapes
The cylindrical crucible consists of a circular bottom and vertical side walls, and the ratio of height to diameter can be adjusted according to needs.
Typical designs include flat bottom, round bottom or with ears (for easier clamping).
Material diversity
Refractory materials: alumina, silicon carbide, corundum, etc., suitable for high temperature melting.
Ceramic materials: Quartz, Boron Nitride, for use in chemically corrosive environments.
Metal materials: platinum, molybdenum, suitable for ultra-high temperature or high purity experiments.
Key Performance
High temperature resistance: Can withstand temperatures above 1000°C (some materials up to 2000°C).
Chemical stability: resist acid and alkali corrosion and avoid contamination by impurities.
Thermal conductivity: Graphite crucible has excellent thermal conductivity and is suitable for rapid heating.
- Application Fields
| field | Application Scenario |
| Materials Science | Preparation of molten metals and alloys (such as titanium alloys and high-temperature ceramics). |
| Chemical Experiments | Ashing analysis, sample melting (such as X-ray fluorescence spectroscopy analysis). |
| Metallurgical Industry | Precious metal refining (such as platinum and gold smelting). |
| Semiconductor Manufacturing | High purity quartz crucibles are used for single crystal silicon pulling. |
| Ceramic Manufacturing | Molten glass and glaze firing. |
- Technical parameters and selection
Key Parameters
Size: diameter 50mm-500mm, height 100mm-1000mm (customizable).
Wall thickness: 5mm-50mm (adjusted according to pressure resistance requirements).
Purity: High purity materials (such as 99.99% quartz) are used in the semiconductor field.
Selection basis
Experimental temperature: For high temperature experiments (>1600℃), choose graphite and zirconia; for medium temperature experiments (1000℃-1600℃), choose alumina.
Chemical environment: For strong acid, choose platinum or corundum; for alkaline environment, choose alumina.
Cost and life: Ceramic crucibles have low cost but short life, while platinum crucibles have high cost but are reusable.
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