A square crucible is an experimental container with a rectangular or square cross-section, designed for experimental scenarios that require a specific shape, large-capacity processing, or directional heat conduction.
- Core Features
Geometric design
Cross-section: Rectangular or square, as opposed to the traditional cylindrical crucible.
Wall thickness: can be designed to be uniform or gradient thickness to meet different heat conduction requirements (such as directional solidification).
Opening design: Large opening facilitates sample loading and removal, suitable for batch processing.
Material advantages
Refractory ceramics: alumina, silicon carbide, etc., which are resistant to high temperatures and have strong chemical stability.
Metal materials: platinum, molybdenum, etc., suitable for ultra-high temperature or high-purity experiments.
Composite materials: Ceramic-based composite materials that combine heat resistance and mechanical strength.
- Application Scenarios
| field | Specific applications |
| Material synthesis | Molten metal alloys and ceramic precursors have a square structure that facilitates uniform mixing and directional solidification (such as single crystal growth). |
| Chemical analysis | Large sample melting (such as XRF analysis), the opening design facilitates sample operation. |
| Semiconductor Manufacturing | The square cavity matches the wafer size and is used for wafer- level material growth (such as gallium arsenide single crystals). |
| Metallurgical Industry | Batch smelting of precious metals (such as platinum and gold) to improve production efficiency. |
| Heat Treatment | The gradient wall thickness design optimizes the heat conduction path to achieve rapid temperature rise and uniform heating. |
- Technical advantages
Space Utilization
The square structure can make full use of the furnace space and is suitable for batch experiments or large-capacity sample processing (such as processing 50kg of titanium alloy at a time).
Heat transfer optimization
The wall thickness gradient design can control the temperature gradient and achieve directional solidification or zone melting (such as directional solidification of metal alloys in alumina crucibles).
Convenience of operation
The large opening design facilitates robotic or manual operation and reduces the risk of sample contamination.
- Typical Cases
Directional solidification experiment
Using a square alumina crucible with a gradient wall thickness, precise temperature control is used to achieve directional solidification of metal alloys and prepare single crystal materials.
Semiconductor wafer preparation
Square platinum crucibles are used for gallium arsenide (GaAs) single crystal growth. The cavity size matches the wafer size to improve material utilization.
Batch Metal Melting
Square graphite crucible is used to melt titanium alloy in vacuum induction furnace, with a single processing capacity of 50kg , which significantly improves production efficiency.
- Selection Basis
Experimental requirements
When directional solidification or zone melting is required, choose a square crucible with a gradient wall thickness.
When processing samples in batches, square crucibles with large openings and large capacities are preferred.
Material matching
Graphite or molybdenum crucibles are used for high-temperature alloy smelting; platinum or quartz crucibles are used for high-purity experiments.
Cost and lifespan
Ceramic crucibles are low cost but short life; metal crucibles are high cost but reusable.
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