Back to Search
Start Over
Microstructural and nanoindentation study of TaN incorporated ZrB2 and ZrB2–SiC ceramics.
- Source :
- Scientific Reports; 8/12/2022, Vol. 12 Issue 1, p1-11, 11p
- Publication Year :
- 2022
-
Abstract
- This study assessed the sinterability and microstructure of ZrB<subscript>2</subscript>-SiC-TaN and ZrB<subscript>2</subscript>-TaN ceramics. Spark plasma sintering at 2000 °C and 30 MPa for 5 min produced both ceramics. The relative density of ZrB<subscript>2</subscript> ceramic containing TaN was 95.3%; the addition of SiC increased this value to 98.1%. SiC's contribution to the elimination of ZrB<subscript>2</subscript> surface oxides was the primary factor in the advancement of densification. The in situ formation of hexagonal boron nitride at the interface of TaN and ZrB<subscript>2</subscript> was confirmed by high-resolution transmission electron microscopy, field emission-electron probe microanalyzer, X-ray diffractometry, and field emission scanning electron microscopy. Moreover, the in situ graphite might be produced as a byproduct of the SiC-SiO<subscript>2</subscript> process, hence boosting the reduction of oxide compounds in the ternary system. The SiC compound had the highest hardness (29 ± 3 GPa), while the ZrB<subscript>2</subscript>/TaN interface exhibited the greatest values of elastic modulus (473 ± 26 GPa) and stiffness (0.76 ± 0.13 mN/nm). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 12
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 158509908
- Full Text :
- https://doi.org/10.1038/s41598-022-17797-6