Tantalum crucibles with 99.9% purity and outer diameter 10 mm are compact, robust vessels designed for small‑scale industrial melting, sampling, or handling of reactive metals where space constraints and precise dosing matter.
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Description
Technical Parameters
Core Attributes of Tantalum Crucible (Ta Crucible)
A Tantalum Crucible (Ta Crucible) is a high‑performance refractory container made from metallic tantalum, valued in industry for its exceptional melting point, chemical inertness, and ability to preserve material purity in extreme thermal and reactive environments.
Tantalum's intrinsic properties-melting point of 3017 °C, density of 16.65 g/cm³, and resistance to corrosion by acids, molten salts, and reactive metals-make its crucibles indispensable where other materials fail. Industrial‑grade crucibles are available in purities from 99.9% to 99.99%, with higher grades eliminating trace contaminants that could alter alloy chemistry or introduce defects in final products. The crucibles exhibit low vapor pressure at ultra‑high temperatures, minimizing mass loss and maintaining dimensional stability over extended campaigns.
Property
Typical Value / Range
Industrial Significance
Purity
99.9% – 99.99% Ta
Controls impurity ingress into processed melts
Melting Point
3017 °C
Enables processing of ultra‑high‑temperature metals
Density
16.65 g/cm³
Provides mechanical robustness at elevated temperatures
Allows use with aggressive media without degradation
Industrial Deployment Scenarios
Ta crucibles serve critical roles in metallurgy, advanced materials, and energy sectors. In nickel‑based superalloy production for aerospace turbines, they contain melts at 1300–1400 °C, ensuring alloy composition remains within tight tolerances. For rare earth metal extraction, large Ta crucibles hold molten fluorides at 1600–1800 °C, preventing contamination of high‑value metals used in magnets and phosphors. In nuclear industries, their low neutron absorption cross‑section and radiation resistance make them suitable for handling molten fluoride salts in heat‑transfer loops.
The non‑wetting characteristic of tantalum prevents molten metals from adhering to crucible walls, enabling clean castings and easy retrieval. Their ability to withstand rapid thermal cycling reduces risk of cracking in processes involving swift heating and cooling. Combined with long service life under proper handling, Ta crucibles lower consumable costs and minimize production interruptions in continuous industrial operations.
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