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Synthesis and flash sintering of (Hf1-xZrx)B2 solid solution powders.
- Source :
-
Journal of the European Ceramic Society . Apr2021, Vol. 41 Issue 4, p2215-2225. 11p. - Publication Year :
- 2021
-
Abstract
- (Hf 1-x Zr x)B 2 solid solution powders were synthesized by two methods. First, solution-based processing of HfCl 4 , ZrCl 4 , sucrose, and H 3 BO 3 was conducted followed by heat treatment in Argon to carry out the carbothermal reduction (CTR) reaction to form the diboride powders. Alternatively, in the so-called borohydride reduction (BHR) method, HfCl 4 , ZrCl 4 and NaBH 4 were mixed in an Argon glove box followed by heat treatment in Argon at 700−1500 °C. The synthesized powders were characterized by XRD, SEM, TEM, EDS, and TGA, and the influence of different parameters such as starting composition, heat treatment temperature and time on products characteristics were revealed. Both CTR and BHR solid solution powders were then consolidated within ∼5 min in a homemade flash sintering (FS) setup. The composition, microstructure, hardness, and thermal-oxidation properties of flash sintered ceramics were characterized, and the implication of this study and directions for future research were discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SOLID solutions
*POWDERS
*HEAT treatment
*SINTERING
*PRODUCT attributes
Subjects
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 41
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 148234546
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2020.12.015