Preparation of non-stoichiometric Gd2+xZr2O7+3x/2 transparent ceramics by vacuum sintering
Source abstract
Abstract
Abstract In this work, Gd2+xZr2O7+3x/2 (x = 0.1–0.6) transparent ceramics with high transmittance were prepared via vacuum sintering of nano powders (about 40 nm) synthesized by combustion method. The characterization results show that all powders are in defective fluorite structure, while the phase of ceramics change from ordered pyrochlore to disordered defective fluorite with the increase of Gd content. Excess Gd leads to lattice expansion, which makes the X-ray diffraction peaks of powders and ceramics shift to lower angle. Besides, there are pores in grain boundary and grain interior, and the main fracture mode exhibits typical transgranular fracture. The transmittance firstly increases and then decreases with the promotion of Gd content, and the Gd2.4Zr2O7.6 ceramic reach a highest in-line transmittance of 80% in the near-infrared range.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear materials and radiation effects · Advanced ceramic materials synthesis · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
Show source-provided references
1. Transparent ceramics: processing, materials and applications10.1016/j.progsolidstchem.2012.12.002 ↗
2. Transparent alumina/ceria nanocomposites by spark plasma sintering10.1002/adem.201000176 ↗
3. Fast densification mechanism of bimodal powder during pressureless sintering of transparent AlON ceramics10.1016/j.jeurceramsoc.2015.10.026 ↗
4. Transparent Mg-α/β-Sialon:Eu2+ ceramics as a yellow phosphor for pc-WLED10.1016/j.jallcom.2015.01.081 ↗
5. Fabrication and upconversion luminescence properties of Er:SrF2 transparent ceramics compared with Er:CaF210.1016/j.ceramint.2021.03.023 ↗
6. Fabrication of MgO high transparent ceramics by arc plasma synthesis10.1016/j.optmat.2018.07.001 ↗
7. Photoluminescence and optical properties of Eu3+/Eu2+-doped transparent Al2O3 ceramics10.1016/j.jeurceramsoc.2021.03.029 ↗
8. Passively Q-switched microchip lasers based on Yb:YAG/Cr4+:YAG composite crystal10.1016/j.optcom.2013.09.030 ↗
9. Fabrication of transparent lutetium oxide by spark plasma sintering10.1111/j.1551-2916.2010.04145.x ↗
10. Infrared transparent mullite ceramics fabricated by solid-state reactive sintering10.1016/j.ceramint.2021.01.238 ↗
11. Influence of CaO on microstructure and properties of MgAl2O4 transparent ceramics10.1016/j.optmat.2020.110604 ↗
12. Optical spectroscopic properties, 0.946 and 1.074 μm laser performances of Nd3+-doped Y2O3 transparent ceramics10.1016/j.jallcom.2017.03.343 ↗
13. Oxide pyrochlore -a review10.1016/0079-6786(83)90001-8 ↗
14. Systematics of the pyrochlore structure type, ideal A2B2X6Y10.1016/0022-4596(84)90234-2 ↗
15. Recent development of A2B2O7 system transparent ceramics10.1007/s40145-018-0287-z ↗
16. Fabrication of transparent La2Hf2O7 ceramics from combustion synthesized powders10.1016/j.materresbull.2004.10.010 ↗
17. Fabrication and properties of La2-xGdxHf2O7 transparent ceramics10.1016/j.jlumin.2014.12.066 ↗
18. Fabrication and phase transition of La2−xLuxZr2O7 transparent ceramics10.1016/j.jeurceramsoc.2014.05.046 ↗
19. Fabrication of La2-xGdxZr2O7 transparent ceramic10.1016/j.jeurceramsoc.2012.09.026 ↗
20. Two-phase LaLuZr2O7 transparent ceramic with high transparency10.1111/jace.13011 ↗
21. Correlated evolution of dual-phase microstructures, mutual solubilities and oxygen vacancies in transparent La2-xLuxZr2O7 ceramics10.1016/j.jmat.2020.07.006 ↗
22. Characterizations of vacuum sintered Gd2Zr2O7 transparent ceramics using combustion synthesized nanopowder10.1016/j.jeurceramsoc.2019.12.007 ↗
23. Highly transparent yttrium titanate (Y2Ti2O7) ceramics from co-precipitated powders10.1016/j.jeurceramsoc.2019.04.018 ↗
24. Near-infrared luminescent properties of Ln:LaGdZr2O7 (Ln = Nd, Yb) transparent ceramics for solid-state laser applications10.1016/j.ceramint.2020.05.305 ↗
25. Microwave-assisted synthesis of uranium doped Y2Zr2O7 transparent ceramics as potential near-infrared optical lens10.1016/j.scriptamat.2019.11.007 ↗
26. L.X. Zhang, X.Y. Li, D.J. Hu, Z.Y. Liu, T.F. Xie, L.X. Wu, Z.X. Yang, J. Li, Fabrication and properties of transparent Tb2Ti2O7 magneto-optical ceramics, J. Eur. Ceram. Soc.. .doi.org/10.1016/j.jeurceramsoc.2021.07.024.
27. Transparent polycrystalline Gd2Hf2O7 ceramics10.1111/jace.15550 ↗
28. H. Kim, B. Akdim, J. Park, W.Y. Jang, R.S. Hay, A.M. Urbas, C. Woodward, IR transmission prediction, processing, and characterization of dense La2Ce2O7, J. Am. Ceram. Soc. doi.org/10.1111/jace.17924.
29. Spectroscopic reflects of structural disorder in Eu3+/Pr3+-doped La0.4Gd1.6Zr2O7 transparent ceramics10.1016/j.jallcom.2018.07.233 ↗
30. La0.4Gd1.6Zr2O7:0.1%Pr transparent sintered ceramic - a wide-range luminescence thermometer10.1039/D0TC00861C ↗
31. Transparent sub-mircon Gd2Zr2O7 ceramic prepared by spark plasma sintering using nanocrystalline powders10.1016/j.jeurceramsoc.2017.11.014 ↗
32. Fast low-temperature densification of translucent bulk nanograin Gd2Zr2O7 ceramics with average grain size below 10 nm10.1016/j.jallcom.2020.154617 ↗
33. Vacuum sintering and optical properties of Gd2-xNdxZr2O7 transparent ceramics using combustion synthesized nanopowders10.1016/j.optmat.2019.109622 ↗
34. Fabrication and scin tillation performance of nonstoichiometric LuAG:Ce ceramics10.1111/jace.13305 ↗
35. The effect of composition on the optical properties and hardness of transparent Al-rich MgO·nAl2O3 spinel ceramics10.1111/jace.14032 ↗
36. Fabrication and properties of Y2Ti2O7 transparent ceramics with excess Y content10.1016/j.ceramint.2018.02.170 ↗
37. Vacuum sintering of highly transparent La1.28Yb1.28Zr2O7.84 ceramic using nanosized raw powders10.1016/j.ceramint.2018.04.049 ↗
38. Fabrication and optical properties of transparent LaErZr2O7 ceramic with high excess contents of La and Er10.1016/j.ceramint.2019.03.047 ↗
39. Vacuum sintering of highly transparent La1+xYb1+yZr2O7 ceramics with excess La and Yb contents10.1016/j.jeurceramsoc.2020.10.045 ↗
40. Native point defects and oxygen migration of rare earth zirconate and stannate pyrochlores10.1016/j.jmst.2020.09.033 ↗
41. Order-disorder transition and unconventional thermal conductivities of the (Sm1−xYbx)2Zr2O7 series10.1111/j.1551-2916.2010.04113.x ↗
42. Order-disorder transition in Nd2−yGdyZr2O7 pyrochlore solid solution: an X-ray diffraction and Raman spectroscopic study10.1016/j.jssc.2007.07.007 ↗
43. Gd2Zr2O7 and Nd2Zr2O7 pyrochlore prepared by aqueous chemical synthesis10.1016/j.jeurceramsoc.2013.05.011 ↗
44. Oxide pyrochlore - a review10.1016/0079-6786(83)90001-8 ↗
45. Preparation and fluorite-pyrochlore phase transformation in Gd2Zr2O710.1016/j.jallcom.2009.08.021 ↗
46. Defect reactions and the controlling mechanism in the sintering10.1111/j.1151-2916.1999.tb01844.x ↗