1.1 本试验方法涵盖了用于测量电镀氢渗透性的电子氢检测仪器程序。该方法测量与镀覆过程中钢吸收的氢以及板后烘烤过程中板的氢渗透性相关的变量。该方法的一个具体应用是控制镀镉工艺，在镀镉工艺中，板相对于氢的孔隙率至关重要，例如高强度钢上的镉。 1.2 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 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。 有关具体的危害说明，请参阅第节 8. . 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《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====== 5.1 在金属电沉积过程中，在水浴中析出氢。在电镀过程中，部分氢气进入零件。如果吸收的氢对高强度钢具有脆化危害，则在电镀后通过烘烤零件将其去除，以排出这些氢。然而，缺乏板孔隙率本身可能会阻碍氢气的排出。因此，了解吸收的氢的相对量和板的孔隙率变得很重要。 5.2 该测试提供了镉板孔隙率的定量控制值，可用于控制镀镉工艺和镀镉硬件的状态。它还可用于电镀工艺故障排除和研究开发，以确定工艺变量、污染物和材料对板孔隙率的影响。当用于控制关键过程时，必须通过与应力断裂试样或其他可接受标准的相关性来确定板孔隙率的控制值。 5.3 板材孔隙度没有主要标准。因此，必须使用两个烤箱，在烤箱之间交替进行测试。对烤炉的数据进行比较，以确保设备没有发生变化。

1.1 This test method covers an electronic hydrogen detection instrument procedure for measurement of plating permeability to hydrogen. This method measures a variable related to hydrogen absorbed by steel during plating and to the hydrogen permeability of the plate during post plate baking. A specific application of this method is controlling cadmium-plating processes in which the plate porosity relative to hydrogen is critical, such as cadmium on high-strength steel. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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. For specific hazard statement, see Section 8 . 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 ====== 5.1 Hydrogen is evolved during metal electrodeposition in aqueous baths. Some of this hydrogen enters parts during plating. If the absorbed hydrogen is at a level presenting embrittlement hazards to high-strength steel, it is removed by baking parts after plating to expel this hydrogen. However, the lack of plate porosity itself may block hydrogen egress. Thus, it becomes important to know both the relative amount of hydrogen absorbed and the plate porosity. 5.2 This test provides a quantitative control number for cadmium plate porosity that can be used to control a cadmium plating process and the status of cadmium-plated hardware. It can also be used for plating process troubleshooting and research and development to determine the effects on plate porosity by process variables, contaminants, and materials. When used to control a critical process, control numbers for plate porosity must be determined by correlation with stress rupture specimens or other acceptable standards. 5.3 There is no prime standard for plate porosity. For this reason, two ovens must be used, with tests alternated between ovens. Data from the ovens are compared to ensure no equipment change has occurred.