کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1603941 1515996 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Niobium hydrogenation process: Effect of temperature and cooling rate from the hydrogenation temperature
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Niobium hydrogenation process: Effect of temperature and cooling rate from the hydrogenation temperature
چکیده انگلیسی

High-purity niobium powder can be produced via the hydrogenation and dehydrogenation processes. The present work aimed at the effect of temperature and cooling rate conditions on the niobium hydrogenation process using hydrogen gas. The hydrogen contents of the materials were evaluated by weight change and chemical analysis. X-ray diffraction (XRD) was performed to identify and determine the lattice parameters of the formed hydride phases. No hydrogenation took place under isothermal conditions, only during cooling of the materials. Significant hydrogenation occurred in the 500 °C and 700 °C experiments, leading to the formation of a β-NbHx single-phase material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 29, Issue 1, January 2011, Pages 134–137
نویسندگان
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