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Glossary of MinSE


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K

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The aspect of achieving coating adherence through mechanical interlocking.  A surface maybe deliberatley roughened, for example, via grit blasting, to achieve this effect.

Hungary flag bekapcsolás

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A method of microindentation hardness also termed toucan indentation hardness.   The  diamond indenter has a diamond shaped pyramid, with one apex (along the major axis) at 172.5°and the other (along the minor axis) at 130°.   Knoop hardness is given by the equation:

HK = 2P/L2 (cot 172.5° + tan 130°) = kg/mm2

or  HK = 14.23 P/L2 = kg/mm2

where L is the long diagonal length and P is the load in kg.

Hungary flag Knoop keménység


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