1.1 本参考测试方法涵盖了检查实验技术和仪器的实验程序。如果遵循，该参考试验方法将提供可重复的动电位阳极极化测量，该测量将再现其他人在其他时间和其他实验室确定的数据，前提是所有实验室都在测试来自同一批次430型不锈钢的参考样品。 1.2 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 1.4 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 标准程序、标准材料和标准图的可用性应使研究人员易于检查其技术。这将导致文献中的极化曲线可以与置信度进行比较。 3.2 用于获取标准参考图的标准铁素体430型不锈钢（UNS S43000）样品可供希望检查自己的测试程序和设备的人员使用。 3. 3.3 图中显示了1992年购买的许多材料的标准动电位极化曲线。本参考试验方法不适用于1992年之前购买的标准材料。这些参考数据基于遵循标准程序的不同实验室的结果，使用1.0中的材料 N H 2. 所以 4. . 电流密度值的四西格玛概率带显示在每个电势处，以指示值的可接受范围。 3.4 该参考测试方法可能不适用于所有材料或所有环境中的极化测试。 3.5 本参考试验方法旨在评估给定电化学试验装置的准确性，而不是用于评估材料性能。 因此，在 图1 不建议评估除430型以外的合金，或除通过金属样品获得的合金以外的许多430型合金。以这种方式使用本参考试验方法中的数据超出了本参考试验方法的范围和预期用途。建议该参考试验方法的用户评估与所测试的特定批次430型不锈钢对应的散射带相关的试验结果。 图1 典型标准动电位阳极极化图 电流密度（μA/cm 2. )

1.1 This reference test method covers an experimental procedure for checking experimental technique and instrumentation. If followed, this reference test method will provide repeatable potentiodynamic anodic polarization measurements that will reproduce data determined by others at other times and in other laboratories provided all laboratories are testing reference samples from the same lot of Type 430 stainless steel. 1.2 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 1.4 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 The availability of a standard procedure, standard material, and a standard plot should make it easy for an investigator to check his techniques. This should lead to polarization curves in the literature which can be compared with confidence. 3.2 Samples of a standard ferritic Type 430 stainless steel (UNS S43000) used in obtaining standard reference plot are available for those who wish to check their own test procedure and equipment. 3 3.3 Standard potentiodynamic polarization plots are shown for a lot of material originally purchased in 1992. This reference test method is not applicable for standard material purchased before 1992. These reference data are based on the results from different laboratories that followed the standard procedure, using that material in 1.0 N H 2 SO 4 . The four sigma probability bands for current density values are shown at each potential to indicate the acceptable range of values. 3.4 This reference test method may not be appropriate for polarization testing of all materials or in all environments. 3.5 This reference test method is intended for use in evaluating the accuracy of a given electrochemical test apparatus, not for use in evaluating materials performance. Therefore, the use of the plots in Fig. 1 is not recommended to evaluate alloys other than Type 430, or lots of Type 430 other than those available through Metal Samples. The use of the data in this reference test method in this manner is beyond the scope and intended use of this reference test method. Users of this reference test method are advised to evaluate test results relative to the scatter bands corresponding to the particular lot of Type 430 stainless steel that was tested. FIG. 1 Typical Standard Potentiodynamic Anodic Polarization Plot CURRENT DENSITY (μA/cm 2 )