ISO 2177-1985 rus PDF

Full title and description

ISO 2177:1985 — Metallic coatings — Measurement of coating thickness — Coulometric method by anodic dissolution. Entry prepared for "St ISO 2177-1985 rus" (user-specified tag); this page summarizes the 1985 (second) edition of ISO 2177 and notes its status and scope.

Abstract

The standard specifies a coulometric (anodic dissolution) method for measuring the thickness of metallic coatings. It gives typical coating/substrate combinations that can be measured, notes applicability to multilayer systems (for example Cu/Ni/Cr), and indicates special cases where diffusion layers or coatings on wires/cylindrical specimens can also be measured. The 1985 second edition cancels and replaces the 1972 first edition.

General information

• Status: Withdrawn / superseded (withdrawn edition; replaced by a later edition).
• Publication date: May 1985 (2nd edition).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.40 — Metallic and other inorganic coatings; coatings for metals.
• Edition / version: Edition 2 (1985), which cancels ISO 2177:1972.
• Number of pages: 9 pages (second edition).

Scope

This standard describes a laboratory coulometric technique based on anodic dissolution to determine the thickness of metallic coatings. It is intended for a range of coating/substrate combinations and is applicable to single and multilayer metallic coatings. The method covers practical considerations such as selection of electrolytes, verification of the complete measurement system, and special measurement cases (diffusion layers, cylindrical specimens, wires). Note: the 1985 edition has since been withdrawn and later revised; users should consult the current ISO 2177 edition for up-to-date requirements.

Key topics and requirements

• Principle of measurement: coulometric (anodic dissolution) determination of coating mass removed to calculate thickness.
• Applicable coating/substrate combinations and limitations (typical combinations provided in a table in the standard).
• Procedures for multilayer systems and examples (e.g., Cu/Ni/Cr), including layer-by-layer dissolution where applicable.
• Selection and use of electrolytes; verification and calibration of the complete measurement system.
• Special cases: detection/measurement of diffusion layers; measurement on cylindrical specimens and wires.
• Quality and reporting requirements for measured thickness values (repeatability and documentation guidance implied by method procedures).

Typical use and users

Laboratories, coating manufacturers, quality-control engineers, metallurgical laboratories, and inspection bodies use this method when chemical/electrochemical measurement of metallic coating thickness is required. The method is suitable for production control, acceptance testing, failure analysis, and research where an electrochemical technique is preferred or where contact/non-destructive optical methods are not applicable.

Related standards

ISO 2177:1985 was later revised and replaced by a subsequent edition (ISO 2177:2003). Other related standards address alternative coating-thickness measurement methods (for example, magnetic, eddy-current, X-ray fluorescence) and standards from ISO/TC 107 on metallic coatings and surface engineering. Users should consult the current ISO catalogue for the definitive set of related and replacement documents.

Keywords

metallic coatings; coating thickness; coulometric; anodic dissolution; measurement; multilayer coatings; ISO 2177; electrochemical measurement; coating inspection.

FAQ

Q: What is this standard?

A: ISO 2177:1985 is an international standard that specified a coulometric (anodic dissolution) method for measuring the thickness of metallic coatings. It is the second edition, published in May 1985.

Q: What does it cover?

A: It covers the laboratory technique, required procedures, applicable coating/substrate combinations, selection of electrolytes, and special measurement situations such as multilayer systems, diffusion layers, and cylindrical specimens.

Q: Who typically uses it?

A: Coating manufacturers, independent testing and calibration laboratories, quality-control and inspection personnel in industries where metallic coatings are applied (e.g., electroplating, galvanizing, engineering components), and researchers in surface engineering.

Q: Is it current or superseded?

A: The 1985 edition is withdrawn and has been revised; a later edition (ISO 2177:2003) supersedes it. Users requiring a currently valid procedure should refer to the most recent edition of ISO 2177.

Q: Is it part of a series?

A: ISO 2177 is part of ISO/TC 107 (surface chemical and electrochemical treatment and related coatings) work on metallic coatings and measurement methods; related ISO documents cover other measurement techniques and coating types.

Q: What are the key keywords?

A: Metallic coatings, coating thickness, coulometry, anodic dissolution, multilayer coatings, ISO 2177.