What is Nanoindentation? An Overview of the Technique - Micro Material UK

The nanoindentation test is a technique used to measure the mechanical properties of materials on a very small scale, typically at the nanometer or micrometer level. It is commonly used to determine properties such as hardness, elastic modulus, creep, and fracture toughness of thin films, coatings, and small material samples.

How It Works:

1. Indentation – A sharp indenter (usually made of diamond, like a Berkovich or Vickers tip) is pressed into the material with a precisely controlled force.
2. Load-Displacement Measurement – As the indenter penetrates, the instrument records the applied force and the depth of penetration.
3. Unloading – The load is gradually removed, and the material's response is analyzed.
4. Property Calculation – Using mathematical models (like the Oliver-Pharr method), the instrument calculates mechanical properties based on the load-depth curve.

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