Toughening of MgAl2O4 spinel/ Si3N4 nanocomposite fabricated by spark plasma sintering
Source abstract
Abstract
Abstract The main objective of this work is to compare the hardness, fracture toughness, and optical transparency of MgAl 2 O 4 spinel (magnesium aluminate), MgAl 2 O 4 spinel/ Si 3 N 4 nanocomposite, and the heat-treated spinel/Si 3 N 4 nanocomposite. For this purpose, the commercial spinel nanopowder and the laboratory-made spinel/ Si 3 N 4 nanocomposite powder were sintered using spark plasma sintering (SPS). A heat treatment at 1000 °C for 4 h was carried out on the as-sintered nanocomposite. The field emission scanning electron microscopy (FESEM), Energy dispersive X-ray (EDX) mapping, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Nanoindentation, and Vickers microhardness analyses were used to determine microstructure, elemental analysis, functional group, hardness, and indentation toughness of the samples. The results showed that the hardness and toughness of the heat-treated sample are more than those of the as-SPSed nanocomposite as much as 15.7% and 25.7%, respectively. Also, the values of optical transmission of the nanocomposite sample in the visible range (400–800 nm) and infrared region (800–2000 nm) were lower than those of pure spinel.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. J.S. Sanghera, G. Villalobos, W. Kim, S. Bayya, I.D. Aggarwal, Transparent Spinel Ceramic. Naval Research Lab Washington DC Optical Sciences Div, 2009.
2. Aluminum magnesium oxynitride: a new transparent spinel ceramic10.1016/0955-2219(95)93946-Z ↗
3. A review on the sintering and microstructure development of transparent spinel (MgAl2O4)10.1111/j.1551-2916.2009.03108.x ↗
4. Fine‐grained transparent spinel windows by the processing of different nanopowders10.1111/j.1551-2916.2010.03814.x ↗
5. Strengthening of transparent spinel/Si3N4 nanocomposites10.1016/j.actamat.2011.11.053 ↗
6. Fracture toughness of Al2O3 with an unstabilized ZrO2 Dispersed phase10.1111/j.1151-2916.1976.tb09386.x ↗
7. Nanocrystalline-matrix ceramic composites for improved fracture toughness10.1557/mrs2004.12 ↗
8. The effect of interfacial radial and shear stress on fibre pull-out in composite materials10.1088/0022-3727/6/17/310 ↗
9. R.W. Rice Mechanisms of toughening in ceramic matrix composites. In: Proceedings of the 9th Annual Conference on Composites and Advanced Ceramic Materials, Vol. 589, 1985, p. 591.
10. Toughening of a particulate‐reinforced ceramic‐matrix composite by thermal residual stress10.1111/j.1151-2916.1990.tb05209.x ↗
11. Ceramic nanocomposites: mechanical properties10.1016/S1359-0286(98)80013-2 ↗
12. From sub-microsized MgAl2O4 powder to MgAl2O4-Si3N4 nanocomposite powder by spray drying of ultrasonicated suspensions10.1016/j.ceramint.2017.06.165 ↗
13. ASTM C373-14a · 2014
14. Fracture toughness determinations by indentation10.1111/j.1151-2916.1976.tb10991.x ↗
15. Contact mechanics
16. Evaluation by indentation of fracture toughness of ceramic materials10.1007/BF00544209 ↗
17. Fracture toughness of pressureless sintered silicon carbide: a comparison of Klc measurement methods10.1016/0272-8842(87)90026-5 ↗
18. Spark plasma sintering and mechanical behaviour of ZrC-based composites10.1016/j.scriptamat.2008.05.026 ↗
19. Properties of ceramic materials and their evaluation
20. Bernard Dennis Cullity. Elements of X-ray diffraction, 2001.
21. Novel synthesis of high surface area MgAl2O4 spinel as catalyst support10.1016/j.matlet.2003.12.013 ↗
22. Effect of water to surfactant ratio (R) on the particle size of MgAl2O4 nanoparticle prepared via reverse micelle process10.1016/j.jallcom.2009.10.213 ↗
23. High-efficiency visible photoluminescence from amorphous silicon nanoparticles embedded in silicon nitride10.1063/1.1621462 ↗
24. Si–N linkage in ultrabright, ultrasmall Si nanoparticles10.1063/1.1377619 ↗
25. The effects of TEOS on the microstructure and phase evolutions of YAG phase by formation of alumina/yttria core‐shell structures10.1111/jace.14966 ↗
26. Characterization of poly (vinyl alcohol)/poly (ethylene glycol) hydrogels and PVA-derived hybrids by small-angle X-ray scattering and FTIR spectroscopy10.1016/j.polymer.2004.08.036 ↗
27. A low viscosity slurry system for fabricating chromium doped yttrium aluminum garnet (Cr: YAG) transparent ceramics10.1016/j.jeurceramsoc.2015.06.013 ↗
28. Transparent MgAl2O4 ceramic produced by spark plasma sintering10.1016/j.scriptamat.2009.03.039 ↗
29. Fabrication of transparent MgAl2O4 spinel polycrystal by spark plasma sintering processing10.1016/j.scriptamat.2008.02.008 ↗
30. Spark‐plasma‐sintering condition optimization for producing transparent MgAl2O4 spinel polycrystal10.1111/j.1551-2916.2009.03074.x ↗
31. Fine-grained transparent MgAl2O4 spinel obtained by spark plasma sintering of commercially available nanopowders10.1016/j.ceramint.2011.06.045 ↗
32. Influence of graphite contamination on the optical properties of transparent spinel obtained by spark plasma sintering10.1016/j.scriptamat.2008.09.027 ↗
33. Effects of preheating of powder before spark plasma sintering of transparent MgAl2O4 spinel10.1111/j.1551-2916.2010.03699.x ↗
34. Fabrication of high-strength transparent MgAl2O4 spinel polycrystals by optimizing spark-plasma-sintering conditions10.1557/jmr.2009.0335 ↗