Journal article
Thermal stability of the nanolayered Fe(2)AlB(2)in nitrogen and argon atmospheres
Journal of the American Ceramic Society, v 104(2), pp 733-739
01 Feb 2021
Abstract
The thermal stability and decomposition mechanisms of Fe(2)AlB(2)powders, synthesized by reactive powder metallurgy, were studied under nitrogen (N-2) or argon (Ar) atmospheres. The effects of using different FeB precursors to synthesize the Fe(2)AlB(2)and hydrochloric acid (HCl) purification treatments on the thermal stability were also investigated. When as-synthesized Fe(2)AlB(2)powders are treated in dilute HCl to dissolve impurity phases, decomposition in N(2)atmospheres occurs readily above 1200 K. The decomposition reaction involves beta-FeB precipitation and the liberated Al atoms reacting with the ambient N(2)to form AlN. Under Ar environments, HCl-treated Fe(2)AlB(2)powders decompose and precipitate beta-FeB, by the out-diffusion of Al from the nanolaminated structure. Interestingly, isothermal annealing under N(2)atmospheres revealed that Fe(2)AlB(2)was more thermally stable when synthesized from lab-synthesized, instead of commercially available, FeB precursors and when the HCl treatment was avoided. The effects of the various factors on the decomposition temperature and decomposition mechanisms are discussed herein.
Metrics
Details
- Title
- Thermal stability of the nanolayered Fe(2)AlB(2)in nitrogen and argon atmospheres
- Creators
- Sankalp Kota - Drexel UniversityLouisiane Verger - Drexel UniversityVarun Natu - Drexel UniversityMaxim Sokol - Drexel UniversityMichel W. Barsoum - Drexel University
- Publication Details
- Journal of the American Ceramic Society, v 104(2), pp 733-739
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- DMREF 1729335 / NSF; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000574565600001
- Scopus ID
- 2-s2.0-85091842177
- Other Identifier
- 991019167923004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Ceramics