SPS is a synthesis and processing method that makes sintering and sinter bonding possible at low temperatures and in a short amount of time. It does this by putting electrical energy between powder particles and using a high-temperature spark plasma created at the beginning of the energizing process.

Difference between Annealing and Sintering:

In the fields of glass and ceramics, annealing usually means heating a glass below its glass transition temperature to remove stress. Sintering is the process of making powders stick together by heating them and making them soft.


The goal of sintering is to give the material strength and stability. During the sintering process, the temperature must be kept below the point at which the materials that make up the object would melt.

Benefits of Sintering:

  • It lets you make shapes with complicated shapes.
  • A lot of accuracies.
  • Stability during a long series.
  • Products are ready to be put together.
  • Less expensive than other methods.

Things Affecting Sintering:

Conditions for sintering include the rate of heating, the time and temperature of sintering, the rate of cooling, the atmosphere and pressure of sintering, and so on. In powder metallurgy, sintering is often done in a reduced atmosphere, a vacuum, a hydrogen atmosphere, etc.

Calcination and Sintering:

Sintering is a way to pack things together by using pressure and a high temperature that is usually lower than the melting point. Calcination is a way to heat solids without air or oxygen. The goal is to heat the material to a very high temperature.

Conventional Sintering:

Conventional sintering, which is also called pressure-less sintering, is the simplest type of sintering. It only requires heating the powder compact after it has been made at room temperature without any pressure from outside.

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