1.1 本试验方法包括使用X射线荧光（XRF）光谱法测定每单位面积金属基底的锆（Zr）涂层重量。 1.2 涂层处理也可以用线性厚度单位表示，前提是涂层的密度已知，或者已经使用与待分析试样的处理相匹配的标准建立了用于厚度测定的校准曲线。为简单起见，该方法随后将参考以涂层重量表示的测定。 1.3 XRF适用于在各种金属基底上测定锆涂层重量或含锆处理的总涂层重量，或两者。 1.4 给定涂层的最大可测量涂层重量是指超过该重量，涂层或基材的特征X射线辐射强度对重量的微小变化不再敏感。 1.5 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.6 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 本试验方法中描述的程序旨在提供一种方法，通过该方法可以确定金属基底上锆处理的涂层重量。 4.2 本试验方法适用于测定含锆处理的总涂层重量和锆涂层重量。

1.1 This test method covers the use of X-ray fluorescence (XRF) spectrometry for the determination of the mass of zirconium (Zr) coating weight per unit area of metal substrates. 1.2 Coating treatments can also be expressed in units of linear thickness provided that the density of the coating is known, or provided that a calibration curve has been established for thickness determination using standards with treatment matching this of test specimens to be analyzed. For simplicity, the method will subsequently refer to the determination expressed as coating weight. 1.3 XRF is applicable for the determination of the coating weight as zirconium or total coating weight of a zirconium containing treatment, or both, on a variety of metal substrates. 1.4 The maximum measurable coating weight for a given coating is that weight beyond which the intensity of the characteristic X-ray radiation from the coating or the substrate is no longer sensitive to small changes in weight. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 ====== 4.1 The procedure described in this test method is designed to provide a method by which the coating weight of zirconium treatments on metal substrates may be determined. 4.2 This test method is applicable for determination of the total coating weight and the zirconium coating weight of a zirconium-containing treatment.