1.1 本试验方法包括对铝及其合金多孔阳极涂层密封质量的试验。它是基于在浸入温热的磷酸-铬酸溶液后涂层的质量损失。 1.2 本试验方法适用于暴露在天气中或在腐蚀性介质中用于保护目的的阳极涂层，并且耐污染性很重要。 1.3 此测试方法不适用于: 1.3.1 硬质涂层，通常不密封。 1.3.2 仅在重铬酸盐溶液中密封的阳极涂层。 1.3.3 经过处理使其具有疏水性的阳极涂层。 1.4 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 3.1 该试验方法描述了一种破坏性试验程序，用于测量阳极氧化物涂层中孔隙的密封程度。低涂层质量损失表示良好的密封质量以及涂层在许多类型的服务中抵抗污染和“开花”的能力。 3.2 该测试方法适用于制造操作中的质量控制目的，并用于确定阳极氧化零件是否符合适用规范中的密封质量要求。

1.1 This test method covers a test for the quality of seal of porous anodic coatings on aluminum and its alloys. It is based upon the loss in mass of the coating after immersion in a warm phosphoric-chromic acid solution. 1.2 This test method is applicable to anodic coatings intended for exposure to the weather, or for protective purposes in corrosive media, and where resistance to staining is important. 1.3 This test method is not applicable to: 1.3.1 Hard coatings, which normally are not sealed. 1.3.2 Anodic coatings that have been sealed only in dichromate solutions. 1.3.3 Anodic coatings that have undergone a treatment to render them hydrophobic. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 This test method describes a destructive test procedure for measuring the degree of seal of the porosity in anodic oxide coatings. Low coating mass loss is an indication of good seal quality and of the ability of the coating to resist staining and “blooming” in many types of service. 3.2 This test method is suitable for quality control purposes within manufacturing operations and for determining whether anodized parts meet seal quality requirements in applicable specifications.