Crystallographic, Morphological and Kinetic Studies of the Alpha-Beta Transformation in the Niobium-Hydrogen System

The group VB bcc metal-hydrogen systems have been extensively studied in the last few years. These studies are relevant to nuclear-reactor technology, superconductivity, and energy storage devices. The elements nitrogen and hydrogen form interstitial solid solutions with the group VB bcc metals and also form a large number of ordered phases. The non-metal atoms occupy a certain set of the possible interstitial sites in these ordered phases and the unit cells of the ordered structure are generally larger than those of the simple metal cells. The ordered phases are found over a wide range of stoichiometry and exhibit many different structures. The niobium-hydrogen system contains an extensive single phase solid solution, a region of spinodal decomposition, and several ordered hydride modifications.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Metallurgical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Ko, Chul Gi

Contributors dc:contributor

• Wayman, C. Marvin

• Engineering, Metallurgy

Identifier

(UMI)AAI8908736

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/71857