| Autor: |
Hsien Loong Teow, Siva Kumar Sivanesan, Se Yong Eh Noum |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings; 2020, Vol. 2233 Issue 1, p020029-1-020029-7, 7p, 1 Diagram, 1 Chart, 4 Graphs |
| Abstrakt: |
The effect of Iron Oxide (Fe2O3) addition from 0 to 0.8 vol% on Zirconia Toughened Alumina (ZTA) with 10 vol% Yttria-Tetragonal Zirconia Polycrystals (Y-TZP) produced through conventional pressureless two-stage sintering (TSS) were investigated. The ZTA samples were sintered with first stage sintering temperature T1 ranging from 1400°C and 1550°C with a heating rate of 20°C/min followed by second stage sintering temperature T2 of 1350°C and hold for 12 hours. The ZTA samples’ were then evaluated on its’ microstructure and mechanical properties such as grain size, bulk density, Vickers hardness, Young’s modulus and fracture toughness. Compared to undoped ZTA composites, addition of Fe2O3 were beneficial in enhancing the composites’ bulk density, Vickers hardness and restricting grain growth. Addition of 0.4 vol% Fe2O3 content and sintered at T1 of 1450°C was able to achieve 99% Theoretical Density (T.D.), Vickers hardness >18 GPa and Young’s modulus >400 GPa. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
