Martin Pech-Canul

Abstract:

The scope of applications of silicon nitride (Si3N4) has increased notably in the last years. In addition to its well-known structural properties, not only it has been considered as matrix or reinforcement in metal and ceramic composites but also as electronic material and biomaterial. Owing to the variety of phase shapes in which it can be produced, namely, particles, whiskers, fibers, films and coatings, Si3N4 is selected for various applications. Recently, orthopedic applications and bacteriostatic characteristics of silicon nitride compared to that of titanium biomaterials have been reported. Inherent to the potential of Si3N4 is the synthesis route used. The hybrid system chemical vapor deposition (or infiltration) (HYSY-CVD, HYSY-CVI) route has been proposed and applied for synthesizing Si3N4 in a variety of morphologies. Alpha silicon nitride produced by this route has also been reported as a promising candidate for emitting in the blue light region. In this contribution, authors present a review on the most recent applications of Si3N4, including structural and functional applications, as electronic material and as bioceramic or biomaterial.