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Overview
A Collar Ampoule is a sealed glass vessel featuring an integrated mechanical collar for secure mounting. Constructed from high-purity borosilicate or fused silica, it withstands extreme thermal shock and chemical corrosion during vacuum or inert gas sealing processes.
Application
- Semiconductor: Used in diffusion furnaces and epitaxial reactors for dopant delivery.
- Metalurgy: Serves as crucibles for crystal growth and alloy melting in induction heaters.
- Laboratory: Functions as reaction vessels in analytical instruments requiring hermetic containment.
Precautions
- Temperature: Operate within -50°C to 1200°C; avoid rapid thermal cycling.
- Pressure: Rated for vacuum up to 10⁻⁶ Torr or internal pressure below 5 bar.
- Maintenance: Inspect collars for micro-cracks before each cycle; clean with acid baths only.