What is nanoindentation materials?

Nanoindentation, also called instrumented indentation testing, is a variety of indentation hardness tests applied to small volumes. Indentation is perhaps the most commonly applied means of testing the mechanical properties of materials.

What is nanoindentation used for?

Nanoindentation is used in universities and industries to characterize thin films in electronics and packaging products, advances alloys for cutting tools, coatings for thermal barriers, viscoelastic properties of polymers, microhardness in industrial quality and control, scratch and wear resistance and many more.

What are the types of Nanoindenters?

There are four major types of nanoindenter tips, namely, Berkovich, cube corner, cono-spherical, and flat-end tips.

How does nanoindentation work?

During the nanoindentation process, a calibrated indenter tip approaches the surface of the sample. The force-displacement data is used to determine the point of contact. After the sample is contacted, the force is linearly increased and the tip indents into the surface of the sample.

What is AFM nanoindentation?

Atomic force microscopy (AFM)-based Nanoindentation quantitatively characterizes local mechanical properties of target specimen. In this technique, a hard AFM indentation tip with known mechanical properties presses against a sample surface until the tip deforms the surface.

What is HC in nanoindentation?

indentation, the contact depth hc is computed from the. indentation depth value h. The calculation of the actual. contact depth is very difficult because the relation between. the contact depth and the indentation depth is influenced.

What is the difference between nanoindentation and Microindentation?

The main difference is nanoindentation gives the very localized hardness whereas micro indentation gives the average hardness over the large area. For example nanoindentation gives the hardness within the grain, microhardness is average value of different grains.

What is Nano Hardness?

Nanohardness is a widely used technique for measuring the local stress, strain, modulus, and toughness properties of dental materials [71–73]. To measure the stress–strain response of the material, changing strain values are necessary during the course of the test.

What is Oliver Pharr method?

The Oliver–Pharr method (Oliver and Pharr, 1992) was originally developed to measure the hardness and elastic modulus of a single phase elasto-plastic material from the indentation load–depth curve with sharp indenters, such as a pyramidal Berkovich tip.