The objective of the present study was to provide further data on E110G cladding behaviour. The results presented here are from new post-test examinations (PTEs) carried out on samples of secondary hydriding experiments conducted earlier in MTA EK.

The as-received Zr-1%Nb cladding samples were pressurised at high temperature to balloon and burst and then oxidised in steam atmosphere. The post-test investigation was focusing on geometric change in the cladding, ductility, oxidation and hydrogen absorption.

Outer and inner oxide layers were formed on the samples, with increasing thickness near the thermal centre. The results include radial and axial distribution of oxygen in the cladding after oxidation. The hydrogen uptake of the alloy shows the expected characteristic axial distribution. Mechanical testing of the oxidised and non-oxidised samples confirmed the results of the previous mechanical tests that after ballooning the samples still had notable flexural strength, whereas after oxidation this decreased.

The results were evaluated against those obtained through simulations, making it possible to estimate the level of oxidation, and to develop better models through further simulation.

本研究的目的是提供有关E110G覆层性能的进一步数据。此处显示的结果来自之前在MTA EK中进行的二次氢化实验样品上进行的新的测试后检查（PTE）。

将收到的Zr-1％Nb熔覆样品在高温下加压使其膨胀并破裂，然后在蒸汽气氛中氧化。测试后的研究集中在包层的几何变化，延展性，氧化和氢吸收方面。

在样品上形成了外部和内部氧化物层，在热中心附近厚度逐渐增加。结果包括氧化后覆层中氧气的径向和轴向分布。合金的氢吸收显示了预期的特征轴向分布。对氧化和未氧化样品的机械测试证实了先前机械测试的结果，即在膨胀后样品仍具有显着的抗弯强度，而在氧化后，该抗弯强度降低了。

将结果与通过仿真获得的结果进行了评估，从而可以估算氧化水平，并通过进一步的仿真来开发更好的模型。