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Spark Plasma/Direct Current Sintering (SPS/DCS)

Thermal Technology

Spark Plasma/Direct Current Sintering (SPS/DCS) Thermal Technology introduces Spark Plasma Sintering (SPS), a revolutionary high speed powder consolidation process. SPS utilizes high amperage pulsed DC current to activate the consolidation and reaction-sintering of materials. An SPS system processes conductive, non-conductive and composite materials to any level of density. The clear benefit of SPS is the significant savings of time and energy and the ability to retain nanostructures.
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  • Benefits
  • Process
  • Systems
  • PFDs
  • Full density and controlled porosity
  • Pre-forming and binders NOT necessary
  • Retains nanometric particle structure
  • Low operating costs
  • Fast cycle times
  • Powder-to-part net and near-net shapes
  • Minimal grain growth
  • Ease of use

Unique to SPS is the DC current generating heat internally, as opposed to conventional methods of materials densification such as hot pressing, wherein the heat is external to the sample. While other traditional methods of materials processing require hours to reach peak temperature, Thermal Technology's SPS takes only minutes. The clear benefits of SPS are the significant savings of time and energy and the ability to retain nano-structures.


Basic configuration of a Spark Plasma Sintering (SPS) machine

ON-OFF pulsed current path through the Spark Plasma Sintering (SPS) machine

Thermal Technology's SPS systems come in a variety of configurations:


  • SPS Model 10 Series:
    10 tons of force and a 3,000 to 5,000 amp power supply(pictured below)
    Ex: Model 10-4 with 10 tons of force and a 4000 amp power supply
  • SPS Model 25 Series:
    25 tons of force and a 5,000 to 10,000 amp power supply(pictured below)
  • DCS* Model 100 Series:
    100 tons of force and a 30,000 amp power supply
  • DCS* Model 250 Series:
    250 tons of force and a 60,000 amp power supply
  • The same SPS technolology using a non-pulsed current, hence Direct Current Sintering (DCS)



Spark Plasma Sintering (SPS) 
Model 25-10

Spark Plasma Sintering (SPS) Model SPS 25-10



Thermal Technology also offers "purpose-built" Spark Plasma Sintering (SPS) and Direct Current Sintering (DCS) systems in a range of sizes as well as high-throughput commercial equipment.

All Thermal Technology Spark Plasma Sintering (SPS) systems include:

  • Remote PC-based programming station
  • Data acquisition
  • State-of-the-art clean wave, high efficiency power supply
  • Fully programmable power supply, including mid-process waveform adjustability
  • Servo valve controlled hydraulics for ultra-fine force control
  • Front load access -- entire front wall of chamber opens