et

mikrokõvadus

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Terminological databases

Materjalitehnika terminibaas

ID 673699 Last modified 13.01.2026
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Domain strength of materialsproduct quality & testing of products
  • 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)
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    • 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)
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    • 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

Metroloogia terminibaas

ID 639410 Last modified 21.11.2024
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Domain metrologymeasuring procedurestest technology
  • rombikujulise püramiidindentori (laiuse pikkuse suhe 7:1) katsetavasse materjali sisse surumise teel määratav kõvadus
  • measure of the hardness of a material, calculated by measuring the indentation produced by a diamond tip that is pressed onto the surface of a sample
  • term "microhardness" has been widely employed in the literature to describe the hardness testing of materials with low applied loads
mikrokõvadus preferred
Usage examples
  • Mikrokõvaduse mõõtmist teostatakse tavaliselt koormustega alla 10 N, mille tulemusel saab seda mõõtmist kasutada väiksemate proovide, õhukeste proovide, kaetud pindade või õhukeste kilede puhul.
microhardness preferred

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