Molten salt synthesis of orthorhombic CrB and Cr2AlB2 ceramics.
In: Ceramics International, Jg. 47 (2021-11-15), Heft 22, S. 31772-31779
academicJournal
Zugriff:
High-purity and fine CrB powders are firstly synthesized from Cr and B powders in (Na, K)Cl molten salt at 850 °C for 2 h. Then the as-achieved CrB powders are used as precursors to synthesize homogeneous and size-controlled Cr 2 AlB 2 powders in (Na, K)Cl molten salt at 900 °C for 2 h. Additionally, the formation mechanisms of CrB and Cr 2 AlB 2 in (Na, K)Cl molten salt are also investigated. Results show that the Cr atom, formed by disproportionation of Cr2+ ions in molten salt, reacts in-situ with B powders to form CrB. For the formation of Cr 2 AlB 2 , Al and CrB migrate mutually and assemble firstly in the molten salt, and then Al intercalates into CrB to generate Cr 2 AlB 2. [ABSTRACT FROM AUTHOR]
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Molten salt synthesis of orthorhombic CrB and Cr2AlB2 ceramics.
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Autor/in / Beteiligte Person: | Wang, Ying ; Yang, Ling Xu ; Liu, Rui Jia ; Bu, Huan Peng ; Mu, Yong Biao ; Liu, Hui Jun ; Zeng, Chao Liu ; Zhu, Sheng Long ; Fu, Chao |
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Zeitschrift: | Ceramics International, Jg. 47 (2021-11-15), Heft 22, S. 31772-31779 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 0272-8842 (print) |
DOI: | 10.1016/j.ceramint.2021.08.059 |
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