Preparation of aluminium lanthanum oxyapatite tapes, La10AlSi5O26.5, by tape casting and reaction sintering

Santacruz, Isabel; Porras-Vázquez, José M.; Losilla, Enrique R.; Aranda, Miguel A. G.

doi:10.1016/j.jeurceramsoc.2011.03.023

Cited by 21 publications

(14 citation statements)

References 27 publications

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“…Those data were taken from the up-curves at the shear rate that corresponds to the casting rate. The viscosity of the suspensions and their behaviour are highly depending of the amount of the BP system; S10-10BP follows a Newtonian model, but when a higher amount of BP was added to the suspension, S10-20BP, it showed a shear thinning response, in agreement with other systems [27]. Moreover, the used binder system results to form a protective layer around the particles that allows dried green tapes to be manipulated and stored without any reaction with the environmental humidity or carbon dioxide during months.…”

Section: Resultssupporting

confidence: 56%

“…Moreover, the used binder system results to form a protective layer around the particles that allows dried green tapes to be manipulated and stored without any reaction with the environmental humidity or carbon dioxide during months. Note this is an important issue since the green tapes contain La 2 O 3 which is a reactive powder, prone to hydration and carbonation [27]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…According to our previous results [25,27,28] and phase diagrams found in the literature [29], a two-step sintering cycle, 900 and 1600 1C, was selected. Previous attempts at lower final temperatures (from 1400 to 1550 1C) were performed, but un-reacted La 2 O 3 and impurities were detected by LXRPD.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Colloidal processing and characterisation of lanthanum tungstate sheets, La5.5WO11.25, prepared by tape casting and reaction sintering

Santacruz

Zayas-Rey

Porras-Vázquez

et al. 2015

Ceramics International

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Section: Resultssupporting

confidence: 56%

Section: Resultsmentioning

confidence: 99%

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Colloidal processing and characterisation of lanthanum tungstate sheets, La5.5WO11.25, prepared by tape casting and reaction sintering

Santacruz

Zayas-Rey

Porras-Vázquez

et al. 2015

Ceramics International

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“…Several efforts are being made for obtaining apatite materials through different routes, such as solid state reaction [2], sol-gel synthesis [6], hot-pressing [7], mechanical milling [8], precipitation combined with an azeotropic-distillation process [9], colloidal processing [10] and floating zone methods [11]. Various problems in processing such apatite materials, as very thin gastight electrolytes, were encountered and have been recently reviewed [12,13].…”

Section: Introductionmentioning

confidence: 99%

Enhanced sinterability of mechanical alloyed La9.33Si2Ge4O26 oxyapatite powders for IT-SOFC electrolytes

Serra

Alves

Oliveira

et al. 2012

Ceramics International

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“…Provided that we successfully prepare the ceramics with their crystallites being highly oriented, the grain‐aligned polycrystals can exhibit the high performance of inherent properties. However, the processing techniques are often complicated, and special equipments are sometimes required …”

Section: Introductionmentioning

confidence: 99%

Microtexture of c‐Axis‐Oriented Polycrystalline Lanthanum Silicate Oxyapatite Formed by Reactive Diffusion

2016

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We annealed the La 2 SiO 5 /La 2 Si 2 O 7 diffusion couple at 1873 K for 25 h to prepare the grain-oriented lanthanum silicate oxyapatite (LSO) polycrystal at the interfacial contact boundary. The polycrystalline LSO was characterized using optical microscopy, transmission electron microscopy, scanning electron microscopy, and X-ray diffractometry (XRD). The external shape line information on individual crystal grains were extracted from the backscattered electron image on the section surface of the polycrystal. We collected the electron backscatter diffraction patterns and XRD patterns to determine, respectively, the crystallographic orientations of individual grains and orientation degrees of the LSO polycrystal. The reaction area was in the form of a layer parallel to the original contact boundary, and consequently categorized, based on the differences in grain size distribution and orientation degree, into three distinct regions. The innermost region with the layer thickness of 30 lm was composed mainly of the rounded and relatively small crystal grains with the size less than~16 lm in diameter. Furthermore, this region showed the lowest orientation degree among the three regions. On the other hand, the LSO grains on both sides of this region were much larger in size and prismatic in morphology; the LSO crystals were elongated along the c-axis, and built up of faces {001}, {304}, and {100}. The individual crystal grains were aligned almost along their c-axes, with their a-axis directions being randomly distributed around the common c-axis. The differences in microtexture among the three regions would be induced by the distinct growth behaviors of LSO crystals.

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Preparation of aluminium lanthanum oxyapatite tapes, La10AlSi5O26.5, by tape casting and reaction sintering

Cited by 21 publications

References 27 publications

Colloidal processing and characterisation of lanthanum tungstate sheets, La5.5WO11.25, prepared by tape casting and reaction sintering

Colloidal processing and characterisation of lanthanum tungstate sheets, La5.5WO11.25, prepared by tape casting and reaction sintering

Enhanced sinterability of mechanical alloyed La9.33Si2Ge4O26 oxyapatite powders for IT-SOFC electrolytes

Microtexture of c‐Axis‐Oriented Polycrystalline Lanthanum Silicate Oxyapatite Formed by Reactive Diffusion

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