Quantitative method developing hydrogen standard sample for GDOES

IF 2.6 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters: X Pub Date : 2025-06-01 Epub Date: 2025-01-07 DOI:10.1016/j.mlblux.2025.100238

Qingyang Liu, Sumia Manzoor, Yan Yan, Mohammad Tariq, Hanan Farhat, Afrooz Barnoush

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Abstract

This present study investigates the measurement of the hydrogen concentration and gradient on the surface of hydrogen charged samples using Glow Discharge Optical Emission Spectroscopy (GDOES). Hydrogen measurement from GDOES suffers from atmospheric contaminations at the beginning of each measurement and hydrogen desorption on the surface also reduces the credibility of measurement. Another shortcoming is there is no calibration sample for GDOES with a known amount of hydrogen. We addressed these challenges by coating the sample with a reproducible and reliable Ni layer right after hydrogen charging. Results demonstrate a strong correlation between hydrogen intensity measured by GDOES on the deposited Ni layer and hydrogen amounts measured by thermal desorption spectroscopy (TDS) analysis. This correlation is a groundbreaking step toward developing calibration samples for hydrogen measurement. In this work, the hydrogen measurement validation of GDOES using TDS by examining hydrogen on hydrogen charged samples is presented.

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制备GDOES氢标准样品的定量方法

本文研究了用辉光放电发射光谱（GDOES）测量带氢样品表面的氢浓度和梯度。gdo的氢气测量在每次测量开始时都受到大气污染的影响，并且氢气在表面的解吸也降低了测量的可信度。另一个缺点是对于已知氢量的gdo没有校准样品。我们通过在加氢后立即在样品上涂覆可重复且可靠的Ni层来解决这些挑战。结果表明，GDOES测量的Ni层氢强度与热脱附光谱（TDS）分析测得的氢量有很强的相关性。这种相关性是开发氢测量校准样品的开创性一步。本文介绍了利用TDS检测带氢样品上的氢，验证了GDOES的测氢方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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