Registered Microhardness


Compared with conventional hardness testing methods, which allow solely the determination of a hardness value, the use of registering electronic measurement equipment (instrumentation) permit the recording of the total load–indentation depth–behaviour of the indentation process, whereby a significantly higher information content about the material behaviour is achieved (e.g. stress relaxation, creep, plastic and elastic parts of the total energy…). Due to the relatively low test forces used in the microhardness test, well-targeted investigations of the properties of shallow structures, structural components and coatings are possible.


Specimen Preparation

  • Specimen requirements: smooth, flat, plane-parallel, minimum thickness (10 times of the indentation depth)
  • Extraction from component parts
  • Embedding, whetting and polishing as needed   

Testing Conditions

  • Registered microhardness tester FISCHERSCOPE® H100c
  • Testing load up to 1 N
  • Vickers indenter
  • Individually programmable cycles of loading and unloading relating to control type (force- and indentation depth-controlled), preload and testing load, loading time and loading rates, etc.

Standards

  • DIN EN ISO 14577:
    Metallic materials – Instrumented indentation test for hardness and materials parameters
    • Part 1: Test method

Contact

Dipl.-Wirtsch.-Ing. Stephan Arndt
Telefon: +49 (0)3461 30889-68
stephan.arndt@psm-merseburg.de

Dr. Ralf Lach
Telefon: +49 (0)3461 30889-67
ralf.lach@psm-merseburg.de

Quickinfo

Procedures

  • Registered microhardness test
  • Instrumented hardness test
  • Hardness measurement on plastics

Results

  • Martens hardness HM
  • Elastic indentation modulus EIT
  • Plastic and elastic part of the total deformation work Wplast bzw. Welast
  • Indentation hardness HIT
  • Indentation creep CIT
  • Indentation relaxation RIT

Standard

  • DIN EN ISO 14577-1