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Filament Coating

Filament Coating

We can offer thoria or yttria filament coating, either as part of the filament manufacturing process, or as a service for coating filaments that you supply to us. The coating service has a unique no-quibble guarantee on performance.

Filament Cleaning

Facilities and techniques used to clean filaments during manufacture include:

  • Sandblasting
  • Buffing wheels and Micromesh abrasives
  • Electropolish
  • UHV cleaning procedures


Filament Alignment

We operate a quality control procedure to ensure the accurate alignment of the filament carrier and wire. Using a video microscope enables us to accurately align the filament wire over the mass spec source ion entrance hole as well as perform quality control inspections of the filament and the welding process.

Filament Conditioning

All filaments outgas when initially powered, but new filaments require a careful power ramp-up to avoid debris contaminating UHV system. After coating, our filaments can be fully conditioned on a degassing rig to ensure that they arrive with you ready for immediate use.