Optical properties of transparent nanocrystalline yttria stabilized zirconia

Alaniz, J.E.; Pérez‐Gutiérrez, Francisco G.; Aguilar, Guillermo; Garay, Javier E.

doi:10.1016/j.optmat.2009.06.004

Cited by 120 publications

(124 citation statements)

References 10 publications

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“…The yellowish-brown appearance of c-YSZ is usually attributed to color centers (oxygen vacancies with trapped electrons) [9][10][11][12], [35][36][37], which are easily produced in c-YSZ under thermal reduction or electroreduction conditions [9][10][11][12], [35][36][37][38][39]. The SPS process provides both conditions: at high temperatures, vacuum and graphite dies yield a thermal reduction environment, and the applied current may also result in electroreduction.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, polycrystalline transparent zirconia has attracted increasing attention because of its unique combination of mechanical and optical properties [1][2][3][4][5][6][7][8][9][10][11][12]. For high density and good transparency, transparent polycrystalline c-YSZ is usually prepared with hot-isostatic pressing (HIP) [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…To restrain grain growth, spark plasma sintering (SPS) is used as an alternative method to prepare transparent c-YSZ [9][10][11][12], as well as other transparent ceramics, such as Al 2 O 3 [13][14][15][16][17][18][19][20][21][22], MgAl 2 O 4 [23][24][25][26][27], Y 3 Al 5 O 12 [27][28][29], MgO [30] and 3Al 2 O 3 · 2SiO 2 [31,32]. Garay and co-workers [9,10] reported that nanograined transparent c-YSZ could be produced by SPS at a moderate pressure of 141 MPa.…”

Section: Introductionmentioning

confidence: 99%

“…Garay and co-workers [9,10] reported that nanograined transparent c-YSZ could be produced by SPS at a moderate pressure of 141 MPa. Munir and co-workers [11] and the present authors [12] demonstrated that the application of high pressure during SPS enhances the transparency of c-YSZ.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of sintering temperature on optical properties and microstructure of translucent zirconia prepared by high-pressure spark plasma sintering

Zhang

Kim

Morita

et al. 2011

Science and Technology of Advanced Materials

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Aiming to characterize the effect of sintering temperature on transparency of zirconia, we have evaluated the optical properties and microstructure of translucent cubic zirconia prepared by high-pressure spark plasma sintering (SPS) at 1000-1200 • C. Color centers (oxygen vacancies with trapped electrons) and residual pores were primary defects in the samples. In SPS samples, the total forward transmittance and in-line transmittance are mainly affected by color centers with a limited contribution from residual pores; in contrast, the changes in reflectance are only related to the porosity. The amounts of color centers and residual pores increase with sintering temperature that reduces the total forward and in-line transmittance of the as-sintered zirconia. Annealing in oxidizing atmosphere improves the total forward and in-line transmittance. During the annealing, the concentration of color centers decreases but the porosity increases.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of sintering temperature on optical properties and microstructure of translucent zirconia prepared by high-pressure spark plasma sintering

Zhang

Kim

Morita

et al. 2011

Science and Technology of Advanced Materials

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“…10 Densified nc-YSZ blanks were polished, annealed, and machined into rectangular implants with dimensions of 2.1 × 4.2 × 0.2 mm 3 . Figure 1, A demonstrates the transparency of the finished implants.…”

Section: Methodsmentioning

confidence: 99%

Transparent nanocrystalline yttria-stabilized-zirconia calvarium prosthesis

Damestani

Reynolds

Szu

et al. 2013

Nanomedicine: Nanotechnology, Biology and Medicine

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Novel Cranial Implants of Yttria‐Stabilized Zirconia as Acoustic Windows for Ultrasonic Brain Therapy

Gutiérrez

Penilla

Leija

et al. 2017

Adv Healthcare Materials

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Therapeutic ultrasound can induce changes in tissues by means of thermal and nonthermal effects. It is proposed for treatment of some brain pathologies such as Alzheimer's, Parkinson's, Huntington's diseases, and cancer. However, cranium highly absorbs ultrasound reducing transmission efficiency. There are clinical applications of transcranial focused ultrasound and implantable ultrasound transducers proposed to address this problem. In this paper, biocompatible materials are proposed for replacing part of the cranium (cranial implants) based on low porosity polycrystalline 8 mol% yttria-stabilized-zirconia (8YSZ) ceramics as acoustic windows for brain therapy. In order to assess the viability of 8YSZ implants to effectively transmit ultrasound, various 8YSZ ceramics with different porosity are tested; their acoustic properties are measured; and the results are validated using finite element models simulating wave propagation to brain tissue through 8YSZ windows. The ultrasound attenuation is found to be linearly dependent on ceramics' porosity. Results for the nearly pore-free case indicate that 8YSZ is highly effective in transmitting ultrasound, with overall maximum transmission efficiency of ≈81%, compared to near total absorption of cranial bone. These results suggest that 8YSZ polycrystals could be suitable acoustic windows for ultrasound brain therapy at 1 MHz.

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Optical properties of transparent nanocrystalline yttria stabilized zirconia

Cited by 120 publications

References 10 publications

Effect of sintering temperature on optical properties and microstructure of translucent zirconia prepared by high-pressure spark plasma sintering

Effect of sintering temperature on optical properties and microstructure of translucent zirconia prepared by high-pressure spark plasma sintering

Transparent nanocrystalline yttria-stabilized-zirconia calvarium prosthesis

Novel Cranial Implants of Yttria‐Stabilized Zirconia as Acoustic Windows for Ultrasonic Brain Therapy

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