NF A91-118

NF A91-118

October 1981
Standard Cancelled

Metallic coatings. Vickers and Knoop microhardness tests.

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Main informations

Collections

National standards and national normative documents

Publication date

October 1981

Number of pages

10 p.

Reference

NF A91-118

ICS Codes

25.220.40   Metallic coatings

Classification index

A91-118

Print number

1 - octobre 1981

International kinship

ISO 4516:1980
Standard replaced by (1)
NF EN ISO 4516
October 2002
Standard Cancelled
Metallic and other inorganic coatings — Vickers and Knoop microhardness tests

Table of contents
  • Avant-propos
    2
  • Introduction
    2
  • 1 Objet et domaine d'application
    2
  • 2 Références
    2
  • 3 Principe
    2
  • 4 Symboles et désignations
    3
  • 5 Appareillage
    3
  • 5.1 Appareil d'essai
    3
  • 5.2 Pénétrateurs
    4
  • 5.3 Blocs de référence normalisés
    4
  • 6 Facteurs affectant la précision
    4
  • 6.1 Charge d'essai
    4
  • 6.2 Vitesse d'application de la charge
    5
  • 6.3 Durée d'application de la charge d'essai
    5
  • 6.4 Vibrations
    5
  • 6.5 État de surface de l'échantillon
    5
  • 6.6 Orientation
    6
  • 6.7 Matériaux fragiles
    6
  • 6.8 Pouvoir de résolution du microscope
    6
  • 6.9 Emplacement des empreintes
    6
  • 7 Mode opératoire
    6
  • 7.1 Généralités
    6
  • 7.2 Choix de la charge d'essai
    6
  • 7.3 Mesurage sur coupe transversale
    7
  • 7.4 Mesurage perpendiculairement à la surface
    7
  • 7.5 Température
    7
  • 7.6 Optique
    7
  • 7.7 Calculs
    8
  • 7.8 Éprouvettes
    8
  • 8 Expression des résultats
    8
  • 9 Procès-verbal d'essai
    8
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