DIN EN ISO 9227发行信息

标准号：DIN EN ISO 9227:2017

发行日期：03/01/2017

发行方：STANDARD by International Organization for Standardization

中文名：人工大气中的腐蚀试验.盐雾试验

英文名：Corrosion tests in artificial atmospheres - Salt spray tests

取代标准：ISO 3768,ISO 7253

《Corrosion tests in artificial atmospheres — Salt spray tests (Revised)》 本国际标准规定了采用中性盐雾(NSS)、乙酸盐雾(AASS)以及铜加速乙酸盐雾(CASS)试验来测定金属材料(无论是否具有永久或暂时的防腐蚀能力)抗腐蚀性所需要的仪器、试剂和操作程序。

本“国际标准”还描述了评估试验耐环境的腐蚀性所采用的方法。

本标准未规定试验样本的尺寸，用于某种特定产品的腐蚀期，或者对结果的解释。此类详细信息在相应的产品规格中给出。

盐雾试验对于测定涂层间断，如某些金属涂层、有机涂层、阳极氧化涂层以及转化涂层中的小孔及其他缺陷特别适用。

ISO 9227:2017 英文介绍

ISO 9227:2017 specifies the apparatus, the reagents and the procedure to be used in conducting the neutral salt spray (NSS), acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray (CASS) tests for assessment of the corrosion resistance of metallic materials, with or without permanent or temporary corrosion protection.

It also describes the method employed to evaluate the corrosivity of the test cabinet environment.

It does not specify the dimensions or types of test specimens, the exposure period to be used for a particular product, or the interpretation of results. Such details are provided in the appropriate product specifications.

The salt spray tests are particularly useful for detecting discontinuities, such as pores and other defects, in certain metallic, organic, anodic oxide and conversion coatings.

The neutral salt spray (NSS) test particularly applies to

- metals and their alloys,

- metallic coatings (anodic and cathodic),

- conversion coatings,

- anodic oxide coatings, and

- organic coatings on metallic materials.

The acetic acid salt spray (AASS) test is especially useful for testing decorative coatings of copper + nickel + chromium, or nickel + chromium. It has also been found suitable for testing anodic and organic coatings on aluminium.

The copper-accelerated acetic acid salt spray (CASS) test is useful for testing decorative coatings of copper + nickel + chromium, or nickel + chromium. It has also been found suitable for testing anodic and organic coatings on aluminium.

The salt spray methods are all suitable for checking that the quality of a metallic material, with or without corrosion protection, is maintained. They are not intended to be used for comparative testing as a means of ranking different materials relative to each other with respect to corrosion resistance or as means of predicting long-term corrosion resistance of the tested material.

Q-fog CRH盐雾试验箱用于ISO 9227-2017中AASS测试的方法

Q-fog CRH盐雾试验箱用于ISO 9227-2017中AASS测试的方法

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