1.1 蒸汽水合试验方法可用于研究玻璃和微晶玻璃等固化体的腐蚀 2. 在高温下暴露于水蒸气时。此外，形成的变更阶段可以用作在存储库条件下可能形成的阶段的指标。这些测试允许在高表面积与溶液体积比下改变玻璃，提供了有关形成的改变相、放射性和危险成分的处置以及特定测试条件下的改变动力学的有用信息。 这些信息可用于绩效评估（McGrail等人，2002 ( 1. ) 3. 例如）。 1.2 该测试方法必须按照数据验收的所有质量保证要求进行。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。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。 1.4 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====== 5.1 VHT可用于研究玻璃和玻璃陶瓷固化体在高温和水蒸气或水薄膜接触条件下的腐蚀。 这种方法可以作为某些材料的加速测试，因为高温会加速热激活过程。文献中报道了广泛的测试温度范围——40°C（Ebert等人，2005 ( 3. ) ，例如）至300°C（维也纳等人，2001 ( 4. ) 例如）。应注意的是，随着试验温度的升高，腐蚀速率决定机制和改变后形成的相类型可能会与处置环境中发生的相类型发生变化（Vienna等人，2001 ( 4. ) ). 5.2 VHT可用作筛查测试，以确定固化体改变的倾向，并用于固化体之间改变率的相对比较。

1.1 The vapor hydration test method can be used to study the corrosion of a waste forms such as glasses and glass ceramics 2 upon exposure to water vapor at elevated temperatures. In addition, the alteration phases that form can be used as indicators of those phases that may form under repository conditions. These tests, which allow altering of glass at high surface area to solution volume ratio, provide useful information regarding the alteration phases that are formed, the disposition of radioactive and hazardous components, and the alteration kinetics under the specific test conditions. This information may be used in a performance assessment (McGrail et al, 2002 ( 1 ) 3 for example). 1.2 This test method must be performed in accordance with all quality assurance requirements for acceptance of the data. 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 ====== 5.1 The VHT can be used to study the corrosion of glass and glass ceramic waste forms under conditions of high temperature and contact by water vapor or thin films of water. This method may serve as an accelerated test for some materials, since the high temperatures will accelerate thermally activated processes. A wide range of test temperatures have been reported in the literature –40 °C (Ebert et al, 2005 ( 3 ) , for example) to 300 °C (Vienna et al, 2001 ( 4 ) , for example). It should be noted that with increased test temperature comes the possibility of changing the corrosion rate determining mechanism and the types of phases formed upon alteration from those that occur in the disposal environment (Vienna et al, 2001 ( 4 ) ). 5.2 The VHT can be used as a screening test to determine the propensity of waste forms to alter and for relative comparisons in alteration rates between waste forms.