Transparent mullite ceramic from single-phase gel by Spark Plasma Sintering

Zhang, Guimin; Wang, Yucheng; Fu, Zhengyi; Wang, Hao; Wang, Weiming; Zhang, Jinyong; Lee, Soo Wohn; Niihara, Koichi

doi:10.1016/j.jeurceramsoc.2009.04.012

Cited by 43 publications

(39 citation statements)

References 21 publications

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“…Usually the pore scattering significantly affects the transparency of ceramics [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. However, annealing experiments on SPS samples indicate only a weak effect of residual pores on transparency [10][11][12].…”

Section: Resultsmentioning

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%

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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%

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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“…In the sintering process of mullite derived from single phase gel by SPS, although the powder has already been transformed into mullite before sintering, the viscous flow sintering mechanism still plays a significant role due to the existence of a small amount of amorphous phase. 19 Boria-silica glass phase has a much lower viscosity compared to pure vitreous silica (e.g. 10 5.1 Pa s for 28 wt% boria-72 wt% silica versus 10 10.2 Pa s for silica at 1300 • C).…”

Section: Powder Characterizationmentioning

confidence: 99%

Boron-doped mullite derived from single-phase gels

Zhang

Wang

et al. 2010

Journal of the European Ceramic Society

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“…Thus, it is possible to fabricate a dense material with an average grain size similar to starting powders. There are many scientific works showing the potential of this technique for obtaining a wide diversity of transparent polycrystalline materials (B. N. Kim et al, 2007), (C. Wang et al, 2009), (G. Zhang et al, 2009), (R. Chaim et al, 2006). Nowadays, one of the challenges related with this technique is the scaling-up in order to obtain large samples or complex shape components.…”

Section: Pressure Assisted Sintering Techniquesmentioning

confidence: 99%