In this process densification is obtained via chemical reaction.
Important applications are reacted-sintered silicon carbide and nitride.
Reaction forming allows for a small amount of dimensional change (shrinkage), but with a large amount of porosity, which results in low strength.
Commonly, a loose compact of solid powder is reacted with a liquid or gas to give the desired ceramic. The reaction starts thanks to heat, and the reactants combine to produce a bonded body.
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Materials
Competing processes
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