Silicon Nitride

The family of nitrides and carbides contains some of the hardest man-made substances, most of which are used in high-end engineering applications. Silicon nitride is generally offthe radar when it comes to materials specified by designers. This may be partly due to the cost of some of these high-performance advanced ceramics, but also partly due to the fact that some of their characteristics have not travelled down the performance chain of consumer-facing products. However, this does not mean that they should not have a place in a designer’s palette of materials.

Within the family of nitrides and carbides, silicon nitride is the third hardest material. Synthesized in the 1960s at a time when many new materials were being developed ...

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