Subscribe to the EPMA Mailing List

Optimization Of Pressure Mode In Spark Plasma Sintering

  • : Eugene Olevsky1, Xialu Wei1
  • : 1San Diego State University
  • : PDF Download
  • : 2016


It is shown that free-forging (upsetting with free lateral surface) and rigid die pressing modes provide different levels of densification under the same axial force applied during spark plasma sintering (SPS). Based on the developed constitutive model of SPS, an optimal combination of the above-mentioned pressing modes enabling the achievement of the highest final relative density is determined. A series of comparative experiments for a number of powder materials systems is carried out, and the results of the modeling are confirmed. The developed modeling-based concept of optimal SPS pressure mode is used as a basis for innovative SPS tooling design facilitating higher efficiency of consolidation. A hypothesis of the major impact of the inter-particle contact area evolution on the densification rate is put forward. It is argued that properly controlled interplay between surface diffusion and external pressure-imposed creep provides the better efficiency of the SPS process.


Non-EPMA member price shown. If you are an EPMA member please log in for your discount.
If you are logged in as a member but are still seeing this message, please contact us at
If you would like to find out about becoming an EPMA member, click here.
This product is currently only available to purchase via this website to companies with a valid EU VAT Number. If you are an individual or company without an EU VAT number wishing to purchase this, please contact EPMA directly at Alternatively, past Euro PM papers are available via ProQuest and Elsevier.
* This field is required
Go To Top