Spark plasma sintering of Sm3+ doped Y2O3 transparent ceramics for visible light lasers

Hu, Zongwen; Xu, Xiaodong; Wang, Jun; Liu, Peng; Li, Dongzhen; Wang, Xiaodan; Liu, An; Zhang, Jian; Tang, Dingyuan

doi:10.1016/j.ceramint.2017.06.059

Cited by 24 publications

(3 citation statements)

References 19 publications

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“…It can be seen from Table 1 that the transmittances of Y 2 O 3 transparent ceramics via SPS method in the visible light band are di cult to exceed 80%, which are generally lower than the transmittances in the infrared range. The sintering temperatures to prepare Y 2 O 3 transparent ceramics with good optical properties in most cases need to exceed 1400 °C [36][37][38][39]. However, when the nanorod powders were used in the present work, transparent ceramic with a transmittance of more than 80% in the infrared band was obtained at only 1300 °C.…”

Section: Resultsmentioning

confidence: 98%

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

Huang¹,

Shi²,

Zhang³

et al. 2021

Preprint

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Herein, we report a new strategy on an improving densification in spark plasma sintering (SPS) ultrafine-grained Y2O3 transparent ceramic using anisotropic-shaped nanorod powders. At the low temperature stage (<600°C), fracture and rearrangement of nanorod powders will appear which can further improve the initial density of particle compact and reduce the initial particle size. When the temperature reaches beyond 600°C, the sintering efficiency of nanorod powder compact will exceed that of the green body packed by spherical powders. The ceramic sample sintered at 1300°C from nanorods is transparent with ultra-fine grain and shows good optical and mechanical properties, while the corresponding ceramic from near-spherical nanocrystalline powders is not dense enough and opaque.

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Section: Resultsmentioning

confidence: 98%

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

Huang¹,

Shi²,

Zhang³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…It can be seen in Table 1 that, the transmittance of the Y 2 O 3 transparent ceramics via the SPS method in the visible light band is difficult to exceed 80%, which is generally lower than the transmittance in the IR range. The fabrication of the Y 2 O 3 transparent ceramics with good optical properties needs high sintering temperatures or sintering aids to promote the densification [35,[43][44][45][46]. However, when the nanorod powders were used in the present work, the transparent ceramics with a transmittance of more than 80% in the IR band were obtained without any sintering aids.…”

Section: In-line Transmittancementioning

confidence: 94%

An effective strategy for preparing transparent ceramics using nanorod powders based on pressure-assisted particle fracture and rearrangement

Huang

Shi²,

Zhang³

et al. 2022

J Adv Ceram

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Achieving full densification of some ceramic materials, such as Y2O3, without sintering aids by spark plasma sintering (SPS) is a great challenge when plastic deformation contributes limitedly to the densification as the yield stress of the material at an elevated temperature is higher than the applied sintering pressure. Herein, we demonstrate that particle fracture and rearrangement is an effective strategy to promote the densification during the pressure-assisted sintering process. Specifically, Y2O3 nanocrystalline powders composed of nanorod and near-spherical particles were synthesized and sintered at various temperatures by the SPS. The results show that the relative density of the ceramics prepared by the nanorod powders is higher than the density of the ceramics from the near-spherical powders after 600 °C due to the fracture and rearrangement of the nanorods at low temperatures, which leads to the decrease of particle size and the increase of density and homogeneity. Based on this novel densification mechanism, ultrafine-grained Y2O3 transparent ceramics with good optical and mechanical properties were fabricated successfully from the nanorod powders.

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“…Since Ikesue et al reported the Nd:YAG transparent ceramic as a solid-state laser gain medium. Since Ikesue reported the Nd:YAG transparent ceramic as a solid laser gain medium [8], transparent ceramics doped with rare earth ions [9], such as YAG [10,11,12], sesquioxide [13,14,15,16,17] and fluoride [18,19,20,21,22,23], have been extensively investigated. Compared with single crystal, transparent ceramics can be fabricated on a large scale, can be mass produced, and can be homogenously and heavily doped with active ions [24,25,26].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Sintering Behavior of Er:SrF2 Transparent Ceramics using Chemically Derived Powder

Liu

Wang

et al. 2018

Materials

Self Cite

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In this paper, we report the fabrication of high-quality 5 at. % Er3+ ions doped SrF2 transparent ceramics, the potential candidate materials for a mid-infrared laser-gain medium by hot-pressing at 700 °C for 40 h using a chemically-derived powder. The phase structure, densification, and microstructure evolution of the Er:SrF2 ceramics were systematically investigated. In addition, the grain growth kinetic mechanism of Er:SrF2 was clarified. The results showed lattice diffusion to be the grain growth mechanism in the Er:SrF2 transparent ceramic of which highest in-line transmittance reached 92% at 2000 nm, i.e., very close to the theoretical transmittance value of SrF2 single crystal. Furthermore, the emission spectra showed that the strongest emission band was located at 2735 nm. This means that it is possible to achieve a laser output of approximately 2.7 μm in the 5 at. % Er3+ ions doped SrF2 transparent ceramics.

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Spark plasma sintering of Sm3+ doped Y2O3 transparent ceramics for visible light lasers

Cited by 24 publications

References 19 publications

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

An effective strategy for preparing transparent ceramics using nanorod powders based on pressure-assisted particle fracture and rearrangement

Fabrication and Sintering Behavior of Er:SrF2 Transparent Ceramics using Chemically Derived Powder

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