Spark Plasma Sintering (SPS) is a tool/technique to consolidate and densify materials starting from powders. SPS uses pulsed DC currents of up to 4000 A to activate the consolidation and reactionsintering of materials. For this reason, it is sometimes referred to a “field-assisted sintering.” The main advantage of SPS over other consolidation methods is its ability to preserve the nanostructure features of composites. In addition, it is used for the densification of a broad range of novel metallic alloys, semiconductors and ceramics.
Specifications and capabilities of GTAT SPS
- Sintering temperatures up to 2000°C.
- Heating rates up to 1000°C/min.
- Typical sample size of 10 mm or 20 mm diameter. Samples up to 40 mm diameter are possible.
- Pressures from 5 MPa to 60 MPa; can be controlled to ±0.2 MPa.
- Sample can be pressed in vacuum (~10-5 Torr) or Ar atmosphere.
- Data acquisition: Temperature, ram position, and pressure are monitored during the run. Can also acquire current, voltage, ambient pressure (vacuum).
- DC pulse width can be adjusted from 4 ms to 999 ms.
- Ram position can monitored with 0.02 mm accuracy and resolution.
sample basis and will be decided after
consultation with the customer.