Fine-grained transparent MgAl2O4 spinel obtained by spark plasma sintering of commercially available nanopowders
Source abstract
Abstract
A high transmittance/small grain size combination for pure spinel ceramics from commercially available nanopowders without sintering aids can be obtained by SPS sintering. By using a low heating rate ≤10 °C/min and a sintering temperature ≤1300 °C, a transparent polycrystalline MgAl 2O4 spinel was fabricated by SPS with an in-line transmission of 74% and 84% for 550 nm (visible) and 2000 nm (NIR) wavelengths respectively. A small average grain size of about 250 nm was obtained and the pores located at the multiple grain junctions have a mean size of about 20 nm. The high in-line transmission is linked not only to the low residual porosity but particularly to the very small size of pores. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Microwave Dielectric Ceramics Synthesis · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. Transparent ceramics for structural applications
2. Transparent compact ceramics/inherent physical issues10.1016/j.optmat.2008.12.009 ↗
3. Transmission physics and consequences for materials selection, manufacturing, and applications10.1016/j.jeurceramsoc.2008.03.025 ↗
4. Fine-grained transparent spinel windows by the processing of different nanopowders10.1111/j.1551-2916.2010.03814.x ↗
5. Transparent polycrystalline MgAl2O4 spinel with submicron grains, by low temperature sintering10.2109/jcersj2.117.1281 ↗
6. A review on the sintering and microstructure development of transparent spinel (MgAl2O4)10.1111/j.1551-2916.2009.03108.x ↗
7. Fabrication of transparent spinel ceramics by reactive hot-pressing
8. Evaluation of hot pressing and hot isostatic pressing parameters on the optical properties of spinel10.1111/j.1551-2916.2005.00527.x ↗
9. Hot isostatic pressing of MgAl2O4 spinel infrared windows10.1080/10426919408934941 ↗
10. Transparent MgAl2O4 spinel ceramics produced by HIP post-sintering10.2109/jcersj.114.802 ↗
11. Transparent MgAl2O4 spinel from a powder prepared by flame spray pyrolysis10.1111/j.1551-2916.2008.02788.x ↗
12. Development of a technology for the obtained of fine grain size, transparent MgAl2O4 spinel parts
13. Spark plasma sintering (SPS) of transparent magnesium-aluminate spinel10.1007/s10853-007-1672-0 ↗
14. Fabrication of transparent MgAl2O4 spinel polycrystal by spark plasma sintering processing10.1016/j.scriptamat.2008.02.008 ↗
15. Spark-plasma-sintering condition optimization for producing transparent MgAl2O4 spinel polycrystal10.1111/j.1551-2916.2009.03074.x ↗
16. Synthesis and densification of transparent magnesium aluminate spinel by SPS processing10.1111/j.1551-2916.2008.02893.x ↗
17. Influence of graphite contamination on the optical properties of transparent spinel obtained by spark plasma sintering10.1016/j.scriptamat.2008.09.027 ↗
18. Transparent MgAl2O4 ceramic produced by spark plasma sintering10.1016/j.scriptamat.2009.03.039 ↗
19. Effects of preheating of powder before spark plasma sintering of transparent MgAl2O4 spinel10.1111/j.1551-2916.2010.03699.x ↗
20. Field assisted sintering
21. Transparent alumina: a light-scattering model10.1111/j.1151-2916.2003.tb03325.x ↗
22. A. Krell, A. Bales, Grain size-dependent hardness of transparent magnesium aluminate spinel, Int. J. Appl. Ceram. Technol., in press.
23. Effects of the homogeneity of particles coordination on solid-state sintering of transparent alumina10.1111/j.1551-2916.2006.00985.x ↗
24. Light scattering by pores in polycrystalline materials: transmission properties of alumina10.1063/1.1662961 ↗
25. M. Bernhard, http://www.lightscattering.de/MieCalc/index.html.