Journal ArticleDOI
Fine-grained transparent MgAl2O4 spinel obtained by spark plasma sintering of commercially available nanopowders
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TLDR
In this paper, a transparent polycrystalline MgAl 2 O 4 spinel was fabricated by SPS with an in-line transmission of 74% and 84% for visible and NIR wavelengths respectively.About:
This article is published in Ceramics International.The article was published on 2012-01-01. It has received 104 citations till now. The article focuses on the topics: Spark plasma sintering & Spinel.read more
Citations
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Field-Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments
Olivier Guillon,Jesus Gonzalez-Julian,Benjamin Dargatz,Tobias Kessel,Gabi Schierning,Jan Räthel,Mathias Herrmann +6 more
TL;DR: Field-assisted sintering is a low voltage, direct current (DC) pulsed current activated, pressure-assisted, and synthesis technique, which has been widely applied for materials processing in the recent years as mentioned in this paper.
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Fifty Years of Research and Development Coming to Fruition; Unraveling the Complex Interactions during Processing of Transparent Magnesium Aluminate (MgAl2O4) Spinel
TL;DR: In this paper, the state-of-the-art in transparent polycrystalline spinel fabrication is presented, and the interaction between these key variables during processing is discussed.
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Spectroscopic study of the discoloration of transparent MgAl2O4 spinel fabricated by spark-plasma-sintering (SPS) processing
TL;DR: In this article, the color center (F+-center) may be generated by the formation of oxygen vacancies, which are mainly introduced by dislocation motion depending on the sintering conditions.
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High-pressure spark plasma sintering (SPS) of transparent polycrystalline magnesium aluminate spinel (PMAS)
TL;DR: In this paper, a high pressure SPS (spark plasma sintering) process was applied for consolidation of un-doped polycrystalline magnesium aluminate spinel, which allows fabricating a fully dense transparent ceramic with submicron grain size and high hardness values at a relatively low temperature (1200°C).
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Production and characterization of transparent MgAl2O4 prepared by hot pressing
TL;DR: In this paper, a thermodynamic investigation of the reactions involving LiF, MgO and Al 2 O 3 has helped in the comprehension of the densification mechanisms affecting the transparency of spinel.
References
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Journal ArticleDOI
Transparent Alumina: A Light-Scattering Model
TL;DR: In this article, a model based on Rayleigh-Gans-Debye light scattering theory has been developed to describe the light transmission properties of fine-grained, fully dense polycrystalline ceramics consisting of birefringent crystals.
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Transmission physics and consequences for materials selection, manufacturing, and applications
TL;DR: In this paper, a range of present and future applications are addressed and evaluated as governed by a sensible balance of stringent needs in different fields of the industry with, on the other hand, the costs of development and manufacture.
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Transparent compact ceramics: Inherent physical issues
TL;DR: In this article, the authors focus on inherent optical properties, governed by composition and the state of the crystallattice, and on the interference of these properties with the microstructural optimization of transparentceramics (e.g., the dependence of the tolerable pore size or grain size on the refractive index).
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Light scattering by pores in polycrystalline materials: Transmission properties of alumina
J. G. J. Peelen,R. Metselaar +1 more
TL;DR: In this article, the in-line transmission of polycrystalline high-density ceramics is discussed in terms of light scattering by pores, and the Mie theory for light scattering is applied to calculate scattering coefficients using generalized parameters.
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A Review on the Sintering and Microstructure Development of Transparent Spinel (MgAl2O4)
TL;DR: A review of the densification mechanisms and the microstructural development for transparent spinel made by free sintering and by hot pressing is given in this article, where LiF is shown to have multiple behaviors: it initially wets spinel and forms a liquid phase at relatively low temperatures, which affects early-stage densification and also grain growth.