The influence of in-situ formation of hibonite on the properties of zirconia toughened alumina (ZTA) composites
Source abstract
Abstract
Abstract This paper reports an investigation on the impact of in-situ formation of CaAl 12 O 19 (hibonite) on the microstructure and mechanical properties of zirconia-toughened-alumina (ZTA). Various amounts of CaCO 3 (0–13 wt%) were added to ZTA to form CaAl 12 O 19 . Samples were sintered at 800 °C for 4 h to obtain CaO from decomposition of CaCO 3 , and then at 1600 °C for 4 h to produce elongated CaAl 12 O 19 grains. Analyses of samples were done using XRD and FESEM. The higher the amount of CaCO 3 added, the higher the amounts of CaAl 12 O 19 and pores observed. The toughness value increased with the increase of CaAl 12 O 19 for a critical range, and subsequently decreased; the reverse trend was observed for the hardness and density results. The sample with 0.5 wt% CaCO 3 addition produced the highest toughness (6.3 MPa m 1/2 ), reasonable hardness (1568.6 HV), density (4.11 g/cm 3 ), and porosity (1.29%) values.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
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References (40)
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1. Hardness and fracture toughness of alumina-based particulate composites with zirconia and strontia additives
2. Effects of Calcium hexaluminate addition on the mechanical properties of zirconia-toughened-alumina10.4028/www.scientific.net/KEM.544.286 ↗
3. Self-reinforced Ca-hexaluminate/alumina composites with graded microstructures10.1016/j.ceramint.2006.10.001 ↗
4. Mechanical properties of zirconia toughened alumina with 10–24vol%. 1Y-TZP reinforcement10.1016/j.jeurceramsoc.2012.06.019 ↗
5. Effects of Cr2O3 addition on the mechanical properties, microstructure and wear performance of zirconia-toughened-alumina (ZTA) cutting inserts10.1016/j.jallcom.2011.09.092 ↗
6. Development and performance alumina ceramic tools of zirconia-toughened10.1016/0043-1648(92)90229-2 ↗
7. Mechanical behaviors of alumina ceramics doped with rare-earth oxides10.1007/s12598-010-0149-5 ↗
8. Phase stability and mechanical properties of zirconia and zirconia composites10.1111/j.1744-7402.2011.02717.x ↗
9. Fracture toughness enhancement for alumina systems: a review10.1111/j.1744-7402.2008.02224.x ↗
10. Sol–gel synthesis and characterization of alumina–calcium hexaaluminate composites10.1111/j.1551-2916.2005.00330.x ↗
11. In-situ alumina/aluminate platelet composites10.1111/j.1151-2916.1992.tb05623.x ↗
12. In situ formation of LaAl11O18 rodlike particles in ZTA ceramics and effect on the mechanical properties10.1016/S0272-8842(02)00031-7 ↗
13. Microstructural development of SrAl12O19 in alumina–strontia composites10.1016/j.jeurceramsoc.2008.05.041 ↗
14. In-situ growth of needlelike LaAl11O18 for reinforcement of alumina composites10.1016/S0272-8842(01)00044-X ↗
15. Microstructural development and mechanical properties of self-reinforced alumina with CAS addition10.1016/S0955-2219(00)00245-4 ↗
16. R-Curve behavior of in-situ-toughened Al2O3:CaAl12O19 ceramic composites10.1111/j.1151-2916.1996.tb08088.x ↗
17. Mechanical properties of in-situ toughened Al2O3/Fe3Al10.1016/S0025-5408(03)00173-9 ↗
18. Synthesis, evaluation and characterization of alumina ceramics with elongated grains10.1016/j.ceramint.2004.10.008 ↗
19. High toughness alumina ceramics with elongated grains10.1360/02ye0181 ↗
20. Physical and mechanical characteristics of in-situ alumina/calcium hexaluminate composites10.1023/A:1006683421321 ↗
21. Effect of strontia on the densification and mechanical properties of sol–gel alumina10.1016/j.ceramint.2005.06.014 ↗
22. Microprobe fluorescence spectroscopy evaluation of stress fields developed along a propagating crack in an Al2O3/CaO·6Al2O3 ceramic composite10.1557/JMR.2001.0385 ↗
23. Fracture behaviour of alumina–calcium hexaluminate composites obtained by colloidal processing10.1016/S0955-2219(00)00123-0 ↗
24. Thermomechanical properties and fracture mechanisms of calcium hexaluminate10.1016/S0955-2219(00)00274-0 ↗
25. Effects of CaO addition on sintering and mechanical properties of Al2O310.1007/BF00275351 ↗
26. Microstructure development in calcium hexaluminate10.1016/S0955-2219(00)00143-6 ↗
27. The effect of sintering temperature on the structure and properties of calcium hexaluminate/anorthite ceramics10.2298/SOS1302141T ↗
28. Fabrication and properties of CaAl12O19–Al2O3 composite ceramics
29. Influence of different parameters on calcium hexaluminate reaction sintering by Spark plasma10.1016/j.ceramint.2012.03.038 ↗
30. Effect of the composition and sintering process on mechanical properties and residual stresses in zirconia–alumina composites10.1016/j.jeurceramsoc.2004.09.025 ↗
31. Microstructural relationship with fracture toughness of undoped and rare earths (Y, La ) doped Al2O3–ZrO2 ceramic composites10.1016/j.ceramint.2011.05.089 ↗
32. Pressureless sintering of gelcast ZTA–MgO–TiO2 systems as potential dental ceramics10.1179/1743676111Y.0000000010 ↗
33. Alumina toughened zirconia from yttria coated powders10.1016/j.jeurceramsoc.2012.03.014 ↗
34. Microstructure, mechanical and tribological properties of microwave sintered calcia-doped zirconia for biomedical applications10.1016/j.ceramint.2007.04.021 ↗
35. Fracture toughness of alumina–zirconia composites10.1016/j.ceramint.2005.02.012 ↗
36. Control of calcium hexaluminate grain morphology in in-situ toughened ceramic composites10.1007/BF00354672 ↗
37. A fracture mechanics analysis of indentation-induced Palmqvist crack in ceramics10.1007/BF00725625 ↗
38. Effects of Sr2Nb2O7 additive on microstructure and mechanical properties of 3Y–TZP/Al2O3 ceramics10.1016/S0272-8842(01)00079-7 ↗
39. Physical, thermal, and mechanical properties of Al2O3:CaAl12O19 composites processed by in-situ reaction sintering
40. Effects of additive amount on microstructure and fracture toughness of SiC–TiB2 composites10.1016/S0272-8842(97)00015-1 ↗