NF ISO 15158

NF ISO 15158

April 2014
Standard Current

Corrosion of metals and alloys - Method of measuring the pitting potential for stainless steels by potentiodynamic control in sodium chloride solution

ISO 15158:2014 describes the procedure for determining the pitting potential for stainless steels (austenitic, ferritic/austenitic, ferritic, martensitic stainless steel) under potentiodynamic control. The principal advantage compared with other potentiostatic test methods is the rapidity of this test method, with which the pitting potential can be measured in a single potential scan. The pitting potential as determined by ISO 15158:2014 can be used as a relative index of performance. For example, one can compare the relative performances for different lots of stainless-steel grades and products. The test described in ISO 15158:2014 is not intended to determine the pitting potential at which actual pitting can occur under real service conditions, or not.

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Main informations

Collections

National standards and national normative documents

Publication date

April 2014

Number of pages

21 p.

Reference

NF ISO 15158

ICS Codes

77.060   Corrosion of metals

Classification index

A05-207

Print number

1

International kinship

ISO 15158:2014
Sumary
Corrosion of metals and alloys - Method of measuring the pitting potential for stainless steels by potentiodynamic control in sodium chloride solution

ISO 15158:2014 describes the procedure for determining the pitting potential for stainless steels (austenitic, ferritic/austenitic, ferritic, martensitic stainless steel) under potentiodynamic control.

The principal advantage compared with other potentiostatic test methods is the rapidity of this test method, with which the pitting potential can be measured in a single potential scan.

The pitting potential as determined by ISO 15158:2014 can be used as a relative index of performance. For example, one can compare the relative performances for different lots of stainless-steel grades and products. The test described in ISO 15158:2014 is not intended to determine the pitting potential at which actual pitting can occur under real service conditions, or not.

Table of contents
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  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Principe
    1
  • 3 Appareillage
    1
  • 3.1 Potentiostat
    1
  • 3.2 Appareil de mesure du potentiel d'électrode
    1
  • 3.3 Appareils de mesure du courant
    1
  • 3.4 Porte-éprouvette
    2
  • 3.5 Cellule d'essai
    2
  • 3.6 Électrode auxiliaire
    2
  • 3.7 Electrode de référence
    3
  • 4 Éprouvettes
    3
  • 5 Mode opératoire
    3
  • 5.1 Préparation des électrodes de référence
    3
  • 5.2 Préparation de l'éprouvette
    3
  • 5.3 Préparation de la solution
    4
  • 5.4 Réalisation de l'essai
    4
  • 5.5 Enregistrement
    4
  • 5.6 Fin de l'essai
    5
  • 6 Analyse statistique des données relatives au potentiel de piqûration
    5
  • 7 Rapport d'essai
    6
  • Annexe A (informative) Porte-éprouvette
    7
  • Annexe B (informative) Exemple d'analyse statistique de données relatives au potentiel de piqûration
    11
  • Bibliographie
    13
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