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Effect of crystallite orientation and external stress on hydride precipitation and dissolution in Zr2.5%Nb
(Elsevier Science, 2014-01)
Thermal cycling of Zr2.5%Nb pressure tubes specimens containing ∼100 wt ppm H between room temperature and 400 °C produces the dissolution and re-precipitation of zirconium hydride, with a distinctive hysteresis between ...
Kinetics of thermal decomposition of niobium hydride
(ELSEVIER SCI LTDOXFORD, 2012-01)
High-purity niobium powders can be obtained from the well-known hydride-dehydride (HDH) process. The aim of this work was the investigation of the structural phase transition of the niobium hydride to niobium metal as ...
A hydride generation flow system for determination of arsenic and selenium by total reflection X-ray fluorescence spectrometry
(Elsevier B.V., 2004-09-20)
In this work, a preconcentration and separation system based on continuous flow hydride generation is proposed to improve the determination of As and Se by total reflection X-ray fluorescence spectrometry. The generated ...
A hydride generation flow system for determination of arsenic and selenium by total reflection X-ray fluorescence spectrometry
(Elsevier B.V., 2004-09-20)
In this work, a preconcentration and separation system based on continuous flow hydride generation is proposed to improve the determination of As and Se by total reflection X-ray fluorescence spectrometry. The generated ...
Effect of additive distribution in H2 absorption and desorption kinetics in MgH2 milled with NbH0.9 or NbF5
(Pergamon-Elsevier Science Ltd, 2018-04-12)
This paper presents a comparative study of H2 absorption and desorption in MgH2 milled with NbF5 or NbH0.9. The addition of NbF5 or NbH0.9 greatly improves hydriding and dehydriding kinetics. After 80 h of milling the ...
Elastic strain tensor of zirconium hydrides in Zr2.5%Nb pressure tubes by synchrotron X-ray diffraction
(Wiley Blackwell Publishing, Inc, 2019)
Zirconium alloys are used in fuel cladding and structural components of nuclear power plants. Hydrogen enters the Zr matrix during plant operation and precipitates as hydride particles that degrade the mechanical properties ...