Specific Process Knowledge/Characterization/Hardness measurement: Difference between revisions
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=Hardness tester= | |||
[[Image:InnovaHardness.jpg|thumb|300x300px|Hardness tester. Positioned in cleanroom F-2]] | [[Image:InnovaHardness.jpg|thumb|300x300px|Hardness tester. Positioned in cleanroom F-2]] | ||
The purpose is to measure hardness of samples or films. This is done by pressing an indenter (a small pyramid-shaped diamond tip) into a sample using a known indentation force. This leaves an indent in the sample. The hardness of the sample can then be derived from the dimensions of the indentation (the softer the material the larger the indentation). The samples should have a reasonably low roughness. Otherwise it can be quite difficult to determine the | The purpose is to measure hardness of samples or films. This is done by pressing an indenter (a small pyramid-shaped diamond tip) into a sample using a known indentation force. This leaves an indent in the sample. The hardness of the sample can then be derived from the dimensions of the indentation (the softer the material the larger the indentation). The samples should have a reasonably low roughness. Otherwise it can be quite difficult to determine the hardness reliably. Also, the samples must be planar and without large protruding features. | ||