# Mechanical properties of ultra-hard nanocrystalline cubic boron nitride

## TL;DR

This study investigates the nanostructure and mechanical properties of bulk nanocrystalline cubic boron nitride, demonstrating its classification as an ultra-hard material through various microscopy and indentation techniques.

## Contribution

It provides new insights into the nanostructure and mechanical performance of nanocrystalline cubic boron nitride, highlighting its potential as an advanced ultra-hard material.

## Key findings

- Nano-cBN exhibits high hardness and elastic modulus.
- The material shows significant fracture toughness.
- Transmission electron microscopy confirms nanocrystalline structure.

## Abstract

Nanostructure and mechanical properties of bulk nanocristalline cubic boron nitride have been studied by transmission electron microscopy, and micro- and nanoindentation. The obtained data on hardness, elastic properties and fracture toughness clearly indicate that nano-cBN belongs to a family of advanced ultra-hard materials.

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Source: https://tomesphere.com/paper/1905.04304