Al2O3-fiber-reinforced porous YSZ ceramics with high mechanical strength
Source abstract
Abstract
Abstract Porous YSZ ceramics were prepared by a gel-casting method using tert-butyl alcohol (TBA) as solvent and Al 2 O 3 fiber as reinforcement. Effects of sintering temperature, soaking time and Al 2 O 3 fiber content on porosity, microstructure, compressive strength, and fracture toughness of the porous ceramics were studied. Compressive strength of porous YSZ ceramics was improved while the porosity decreased with the increase of sintering temperature and soaking time. Addition of Al 2 O 3 fibers significantly strengthened and toughened porous YSZ ceramics; however, the laws of strengthening and toughening were different. The strength of the porous YSZ ceramics reached maximum at the addition of 10 vol% Al 2 O 3 fibers, and the corresponding compressive strength and flexural strength were 100.2±25.4 MPa and 61.5±11.3 MPa, respectively. Fracture toughness of the porous YSZ ceramics monotonically increased with increasing of Al 2 O 3 fibers, and could be improved from 0.5 MPa m 1/2 to 1.2 MPa m 1/2 (improved by 140%). The strengthening and toughening mechanisms of Al 2 O 3 fibers were discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Concrete and Cement Materials Research · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. Mechanical properties and interfacial microstructure of SiC whisker-reinforced ZrO2–Y2O3 composites10.1016/0272-8842(95)99789-E ↗
2. Transformation toughening of Al2O3/ZrO2 laminated ceramics with residual compressive stress10.1016/S1005-8850(07)60088-7 ↗
3. Phase transition temperature of ZrO2–Y2O3 solid solutions (2.4–6mol% Y2O3)10.1016/S0167-2738(96)00606-6 ↗
4. Structure and activity of NiOα–Al2O3 and NiOZrO2 calcined at high temperatures: I. Structure10.1016/0021-9517(84)90049-6 ↗
5. Enhancement of the compressive strength of highly porous Al2O3 foam through crack healing and improvement of the surface condition by dip-coating10.1016/j.ceramint.2013.09.057 ↗
6. Highly porous corundum–mullite ceramics – structure and properties10.1016/j.ceramint.2013.09.139 ↗
7. Preparation of porous mullite–corundum ceramics with controlled pore size using bioactive yeast as pore-forming agent10.1016/j.matlet.2013.11.067 ↗
8. Processing, structures and compressive properties of porous glass–ceramic composites prepared from secondary by-product materials10.1016/j.ceramint.2013.02.048 ↗
9. Effect of sintering temperature on compressive strength of porous yttria-stabilized zirconia ceramics10.1016/j.ceramint.2010.03.009 ↗
10. Porous YSZ ceramics with unidirectionally aligned pore channel structure: lowering thermal conductivity by silica aerogels impregnation10.1016/j.jeurceramsoc.2011.07.014 ↗
11. Preparation of porous lamellar mullite ceramics with whisker skeletons by electrospinning and pressure molding10.1016/j.matlet.2012.01.080 ↗
12. Reactive sintering of tungsten-doped high strength ZrB2–SiC porous ceramics using metastable precursors10.1016/j.materresbull.2013.11.053 ↗
13. Fabrication of fiber-reinforced ceramic composites by the modified slurry infiltration technique10.1111/j.1551-2916.2007.01795.x ↗
14. Oxidation kinetics and stress effects for the oxidation of continuous carbon fibers within a microcracked C/SiC ceramic matrix composite10.1111/j.1551-2916.2007.02170.x ↗
15. Zirconia–silica–carbon coatings on ceramic fibers10.1111/j.1151-2916.2004.tb06348.x ↗
16. Fiber-matrix compatibility in an all-oxide ceramic composite with RBAO matrix10.1111/j.1551-2916.2011.04863.x ↗
17. Preparation of self-reinforcement of porous mullite ceramics through in situ synthesis of mullite whisker in fly ash body10.1016/j.ceramint.2011.08.026 ↗
18. Y. Lang, C.A. Wang and S.N. Tie, Porous YSZ ceramics reinforced by different kinds of fibers, Int. J. Appl. Ceram. Technol. 10.1111/ijac.12195, in press10.1111/ijac.12195 ↗
19. Fabrication and properties of mullite fiber-reinforced porous mullite ceramics10.4028/www.scientific.net/KEM.512-515.586 ↗
20. Piatti · 1978
21. Zhang · 1993