ISO 3613:2021 金属和其他无机涂层 锌、镉、铝锌合金和锌铝合金上的铬酸盐转化涂层 试验方法

标准编号：ISO 3613:2021

中文名称：金属和其他无机涂层 锌、镉、铝锌合金和锌铝合金上的铬酸盐转化涂层 试验方法

英文名称：Metallic and other inorganic coatings — Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys — Test methods

发布日期：2021-05

标准范围

本文件规定了确定-？存在无色铬酸盐转化涂层，-？在锌或镉或铝锌（铝的质量分数:55%，在54%到56%的质量分数范围内）和锌铝（铝的质量分数:5%）合金上的无色和有色涂层中存在六价铬，-？锌和镉的单位面积总铬含量，-？无色和有色涂层的单位面积质量，-？铬酸盐转化涂层的良好附着力，以及-？铬酸盐涂层的质量。这些方法适用于-？无色和有色铬酸盐转化涂层，含有不同比例的三价铬和六价铬，通过化学或电化学工艺生产，以及-？不含任何补充涂层（如油、水或溶剂）的铬酸盐涂层-基于聚合物或蜡。

This document specifies methods for the determination of—    the presence of colourless chromate conversion coatings,—    the presence of hexavalent chromium in colourless and coloured coatings on zinc or cadmium or aluminium-zinc (mass fraction of aluminium: 55 %, within a range of 54 % to 56 % mass fraction) and zinc-aluminium (mass fraction of aluminium: 5 %) alloys,—    the total chromium content per unit area on zinc and cadmium,—    the mass per unit area of both colourless and coloured coatings,—    the satisfactory adhesion of chromate conversion coatings, and—    the quality of chromate coatings.These methods are applicable to—    colourless and coloured chromate conversion coatings containing trivalent and hexavalent chromium in varying proportions and produced by either chemical or electrochemical processes, and—    chromate coatings that are free from any supplementary coatings, such as oil, water or solvent-based polymers or wax.

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