en

microhardness

1

Terminological databases

Materjalitehnika terminibaas

ID 673699 Last modified 13.01.2026
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Domain strength of materialsproduct quality & testing of products
microhardness preferred
microindentation hardness
  • materjali võime vastu panna väikesele kohalikule plastsele deformatsioonile; väikeste koormustega (kuni 2 N) otsaku/indentori materjali sisse surumise teel määratav kõvadus (vt Vickersi kõvadus, Knoopi kõvadus; vrd makrokõvadus)
    Good to know
    • Kuna tegemist on väga väikeste indenteerimisjälgedega, kasutatakse nende mõõtmiseks vastavat mikroskoopi. Kasutatakse erinevate struktuuriosade kui ka erinevail sügavustel pinnakõvaduste mõõtmisel, nt difusioonkarastusel/difusioonkõvendusel. (vt difusioonkarastus/difusioonkõvendus)
  • the hardness of a material as determined by forcing an indenter such as a Vickers or Knoop indenter into the surface of a material under very light load (see: Vickers hardness, Knoop hardness; compare: macrohardness)
    Good to know
    • Usually, the indentations are so small that they must be measures with a microscope. Capable of determining hardnesses of different microconstituents within a structure, or of measuring steep hardness gradients such as encountered in case hardening. (see: case hardening)
mikrokõvadus
microhardness preferred
microindentation hardness
micro penetration hardness

Materjalitehnika terminibaas

ID 673602 Last modified 13.01.2026
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Domain strength of materials
Knoopi kõvadus
Knoop hardness
Knoop microhardness
  • rombikujulise püramiidindentori (laiuse pikkuse suhe 7:1) katsetatavasse materjali sisse surumise teel määratav mikrokõvadus (vt Knoopi kõvaduskatse, mikrokõvadus)
  • microhardness measured with a Knoop diamond indenter, an elongated rhombus pyramid (see: Knoop hardness test, microhardness)
    Good to know
    • Knoop hardness indenter contains a diamond with a rhombic base, so that the diagonals have a 1:7 size ratio, and included angles at the diamond edge of 130o and 172o30, .
Knoopi kõvadus
Knoop hardness
Knoop microhardness
microhardness

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