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Nanoindenter: Securing the Mechanical Characteristics of Materials at Nano-scale

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Nanoindenter
Introduction:-
Nanoindenter is basically used for securing the mechanical characteristics or properties at micro or nano-scale with the help of powerful technology known as Nanoindentation which is utilized for securing the parameters of material for example hardness, elastic modulus, viscous or plastic parameters with the help of experimental readings of penetration depth and indenter load.
It must be note down that forces, those are involved, are normally in the range of micro newton or mili newton and depth will also be in the range of nanometers.
It must be recalled that Very little volume of material having order of about several tens of nanometers might be determined with the only tip of nanoindenter and characteristics of material might be determined for example a very small piece of material.
Back ground:-
If we consider in case of a conventional method of indentation testing, micro or macro indentation, there will be hard tip and mechanical characteristics of this hard tip will be known (normally constructed by such a material whose hardness will be higher for example diamond) and this hard tip will be pressed into a such a work piece whose mechanical characteristics are unknown. The load which is placed over the tip of indenter will be enhanced when the tip of indenter penetrates more into the work piece and very soon it will achieve user demand value.
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H, is hardness
P max – maximum load
Ar – Area of Residual indentation
This technology was associated with some drawbacks. This technology utilizes varied and large tip- shape along with indenter rigs and this indenter ring doesn’t have suitable spatial resolution or we may say that the exact location of the area where indentation will be carried out is ver...

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...nd as well as tribological characteristic of thin coated- systems & advanced materials in a area or field where stiffness and hardness play vital role.
• The pendulum system has only advantages of reliability scratch testing. Scratching occurs in high stiffness direction for pivot and direct
• Nanoindenter is basically used for securing the mechanical characteristics or properties at micro or nano-scale with the help of powerful technology

Works Cited

• W.C. Oliver and G.M. Pharr (2011). "Measurement of hardness and elastic modulus by instrumented indentation
• Anthony C. Fischer-Cripps, Nanoindentation, Springer-Verlag GmbH, 2002
• Lambert M. Surhone, Miriam T. Timpledon and Susan F. Marseken, Nanoindentation, VDM Publishing, 11-Aug-2010.
• Jiri nemeck , nanoindentation, Faculty of Civil Engineering, Department of Mechanics, Czech Technical University in Prague
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