Quantification of Thermal Oxidation in Metallic Glass Powder using Ultra-small Angle X-ray Scattering

Authors

Tanaji Paul, Oklahoma State University; Argonne National Laboratory
Linqi Zhang, Oklahoma State University
Sourabh Biswas, Oklahoma State University
Archana Loganathan, Department of Mechanical and Materials Engineering, Florida International UniversityFollow
Matthew G. Frith, Argonne National Laboratory
Jan Ilavsky, Argonne National Laboratory
Ivan Kuzmenko, Argonne National Laboratory
Jim Puckette, Oklahoma State University
A. Kaan Kalkan, Oklahoma State University
Arvind Agarwal, Department of Mechanical and Materials Engineering, Florida International UniversityFollow
Sandip P. Harimkar, Oklahoma State University

Date of this Version

5-2019

Document Type

Article

Abstract

In this paper, the composition, structure, morphology and kinetics of evolution during isothermal oxidation of Fe 48Cr 15Mo 14Y 2C 15B 6 metallic glass powder in the supercooled region are investigated by an integrated ex-situ and in-situ characterization and modelling approach. Raman and X-ray diffraction spectra established that oxidation yielded a hierarchical structure across decreasing length scales. At larger scale, Fe 2O 3 grows as a uniform shell over the powder core. This shell, at smaller scale, consists of multiple grains. Ultra-small angle X-ray scattering intensity acquired during isothermal oxidation of the powder over a wide Q-range delineated direct quantification of oxidation behavior. The hierarchical structure was employed to construct a scattering model that was fitted to the measured intensity distributions to estimate the thickness of the oxide shell. The relative gain in mass during oxidation, computed theoretically from this model, relatively underestimated that measured in practice by a thermogravimetric analyzer due to the distribution in sizes of the particles. As a whole, this paper introduces the first direct quantification of oxidation in metallic glass powder by ultra-small angle X-ray scattering. It establishes novel experimental environments that can potentially unfold new paradigms of research into a wide spectrum of interfacial reactions in powder materials at elevated temperatures.

Comments

Accepted Manuscript.

Recommended Citation

Paul, Tanaji, Zhang, Linqi, Biswas, Sourabh, Loganathan, Archana, Frith, Matthew G., Ilavsky, Jan, Kuzmenko, Ivan, Puckette, Jim, Kalkan, A. Kaan, Agarwal, Arvind, and Harimkar, Sandip P. Quantification of Thermal Oxidation in Metallic Glass Powder using Ultra-small Angle X-ray Scattering. United States: N. p., 2019. Web. doi:10.1038/s41598-019-43317-0.