Spark Plasma Sintering “SPS” (aka FAST or Field Assisted Sintering Technology) is an advanced technique to take powder and turn it into solid parts similar to additive manufacturing but without having to melt the material. It allows for the rapid application of temperature and pressure via high-density pulsed current within a controlled atmosphere. The unique heating mechanism of using electrical current gives SPS the ability to consolidate materials that traditional processes can’t and at much faster rates. SPS is the ideal consolidation and bonding method for all of your materials including metals, refractory alloys, nanomaterials, ultra-high temp ceramics, and more.
Overall Benefits of SPS
1. Shorter Cycle Times -
Sintering cycles are minutes vs hours/days for conventional processes. High productivity, extremely rapid material development capabilities.
2. Lower Sintering Temperatures -
Sinter materials at lower temperatures compared to conventional sintering processes
3. Extremely Versatile -
Densify low melting point metals, ultra-high temperature ceramics, or even bond dissimilar materials requiring non uniform temperature. No other sintering process can come close. Can sinter porous parts and fully dense parts.
4. High precision process control -
Able to finely control sintering parameters including temperature and pressure to ensure the best outcome for your parts. Unique chemistries unable to be made with conventional liquid melt processes. Engineered structures within materials preserved that would otherwise be lost in other processes
Diffusion Bonding using SPS
Not only can SPS densify powder materials but it is also highly effective at bonding both similar and dissimilar materials together. Bonding can be performed with all the materials listed above and more. Options for bonding include:
· Bulk solid to bulk solid materials
· Powder to solid
· Bonding thin sheets together
· Functionally graded material bonding (ceramics to metals, polymers to metals, etc.)