牛津仪器集团成员
扩展
能源生产和储存
核能

在工厂的初期建设和运行过程中,安全是最主要的问题。其中一个关键问题是防止辐射和辐射材料的暴露,例如防止核反应堆中锆合金材料(用于将燃料棒与周围冷却水进行隔离)开裂。

氢在锆合金中溶解度较低,过量的氢可导致氢化物析出。这会引起脆性、氢致延迟断裂和氢致起泡,所有这些都限制了材料的使用寿命,并引发环境问题。因此,了解氢化锆析出的过程至关重要,但首先必须能够检测和分析锆合金材料中的ZrH析出物。

EDS不能检测ZrH,但EBSD可以很容易地识别和表征锆基体中的ZrH析出物。从而为估算核电站中使用的锆合金部件的寿命提供了有价值的信息。

返回至 能源生产与储存

应用笔记

Characterisation of Hydrides in a Zirconium Alloy, by EBSD

Zirconium alloys are used in nuclear reactors owing to their capture cross-section for neutrons and good mechanical and corrosion properties. However, they suffer from delayed hydrogen cracking (DHC) due to formation of hydride particles. This study shows how EBSD can be used to characterise hydrides in terms of their orientation relationship with the matrix and internal structure and local misorientation...

下载
Investigating the of GdNi5 precipitates on the toughness of a Ni-based superalloy

In this application, the processed superalloy had a much lower toughness than was expected (and was required). A short investigation using automated EBSD was carried out in order to determine the cause of the undesired physical properties...

下载

相关产品

欢迎您与我们的应用专家联系

沪ICP备17031777号-1 公安机关备案号31010402003473