[5][6] Conventional sintering is the simplest method for producing CNT metal matrix composite compacts.
The CNTs and metal powders are mixed by a process of mechanical alloying/blending and then are compressed to form a green compact, which is then sintered to get the final product.
Metallic compacts are subject to oxidation as compared to ceramics and hence the sintering has to be done in an inert atmosphere or under vacuum.
[7] One major drawback of this processing route is the inability to tailor the CNT distribution within the metallic matrix.
For conventional sintering usually a green compact needs to be prepared externally using a suitable die and hydraulic machine for applying the necessary pressure.