1. Scratch hardness testing

1.1 Mohs scale

Historically, this is the oldest method of measuring hardness: a body is harder than another if it can scratch it. It was used by Réaumur, then by Mohs, who proposed the first mineral hardness scale (table 1 ): each mineral scratches those below it. The minerals indicated have been selected to lead to comparable hardness intervals between two consecutive elements.

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1.2 Stripe sclerometer

In order to clarify the notion of hardness...

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Scratch hardness testing

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Bibliography

(1) - RODRIGUEZ (R.), GUTIERREZ (I.) - Correlation between Nanoindentation and Tensile Properties. Influence of the Indentation Size Effect. - Materials Science and Engineering A 361 2003 pp. 377-384.
(2) - MURAKAMI (Y.), YVAN (L.P.) - Finite Elements Method...