Instrumented Indentation Characterization of Laser‐Induced Fe₃O₄/Al Composite Coating

Instrumental indentation technoques (IIT) are useful tools not only to quantify properties such as hardness and elastic modulus, but also to provide qualitative comparison of materials behavior such as deformation, toughness, work hardening capacity, and plastic‐elastic responses in composite coatings. The authors exemplify the application of IIT on a laser‐induced Fe₃O₄–Al composite. The Figure shows an SEM image of a nano‐indentation impression.