Home What is Spark Plasma Sintering (SPS)?

What is Spark Plasma Sintering (SPS)?

Spark Plasma Sintering (SPS) also called Field Assisted Sintering Technology (FAST) or Direct Current Sintering (DCS) is a hot pressing technique capable of producing highly dense materials in record time

The main difference between FAST / SPS and more conventional powder metallurgy technologies is its heating method.

Spark Plasma Sintering process

The Spark Plasma Sintering process consists of a high intensity pulsed current that passes through a graphite tooling.

With this set-up it is possible to reach high heating and cooling rates of over 100°C/min. The Spark Plasma Sintering process can reach high temperature in a few minutes compared to several hours for other sintering techniques.

The main advantage of this powder processing technology is the absence of organic binders that can cause problems during sintering. The technology also helps reducing the amount of residual stress within the material. through the efficient control of the experienced thermal gradients during the sintering process.

This reduced processing cycle combined to the fast heating rate result in a fine microstructure and an increase in the mechanical properties of the sintered materials.

Thanks to these assets, this powder sintering process can easily densify high performance and innovative materials (composites, hard metals, metal alloys, refractory materials).

Through 15 years of research and development dedicated to the optimization of the SPS (Spark Plasma Sintering) process, Norimat has developed a unique patented technique combining 3D printing and FAST/SPS technology. 

This process allows complex parts production via spark Plasma Sintering in only one step of heat treatment. This method allows the production of near-net shaped parts and reduces the need for machining.

Advantages of Spark Plasma Sintering

  • FROM POWDER TO FINAL PARTS IN LESS THAN 1 HOUR

With a heating rate of more than 100°C/minute, the materials quickly reach their sintering temperature.

  • IMPROVED MECHANICAL PERFORMANCE

The fast sintering process prevents grain growth within the materials. In addition to the pressure and temperature applied, the materials maintain a fine microstructure and can reach a density of 99.5%.

  • MATERIAL WASTE LESS THAN 1%

All the powder sintered in the process is densified, there is virtually no powder waste.

  • CAN DENSIFY ANY MATERIAL BETWEEN 200 AND 2400°C

The specificity of the Spark Plasma Sintering (SPS) process makes possible the sintering of the most innovative and refractory materials.

 

Norimat group

Norimat group offers you a unique know how, from the research & development to the production of your parts.

Our sintering service is at your service for the manufacturing of the most performing and innovative tailor-made parts.

From the sintering of highly refractory ceramic powders to the sintering of alloy and composite materials, Norimat uses FAST/SPS technology to realize your ambitions.

With Norimat Group, be sure to get the best possible performing parts & quality.

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