Approach for sintering nano-sized yttria-stabilised zirconia

Hasanuzzaman, M.; Rafferty, Aran; Olabi, Abdul Ghani; Prescott, Tim

doi:10.1504/ijnm.2007.014572

Cited by 5 publications

(7 citation statements)

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“…Organic dispersants are widely utilized in colloidal processing of ceramics. , Ammonium polyacrylates and particularly Dolapix CE 64 are often used for preparation of concentrated YSZ slips. − However, no data were available on application of Dolapix for diluted dispersions of YSZ powders, so the concentration of the deflocculant had to be optimized before starting the coassembly experiments. The results are presented in Figure c.…”

Section: Resultsmentioning

confidence: 99%

Vertical Convective Coassembly of Refractory YSZ Inverse Opals from Crystalline Nanoparticles

Kubrin

Rosário

Lee

et al. 2013

ACS Appl. Mater. Interfaces

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A facile deposition method of 3D photonic crystals made of yttrium-stabilized zirconia (YSZ) was developed. YSZ nanoparticles with primary particle size below 10 nm and cubic crystalline phase were synthesized by hydrothermal treatment of solutions of zirconyl nitrate, yttrium nitrate and acetylacetone. Before coassembly with polystyrene (PS) microspheres, a dispersant Dolapix CE64 was added to the dialyzed sol of YSZ nanoparticles to render their surface negatively charged. Vertical convective coassembly resulted in 3D ordered YSZ/PS hybrid films, which were inverted at 500 °C in air to produce inverse opals. The linear shrinkage of the coatings was in the range 15-20%, below previously reported values for YSZ. The obtained coatings demonstrated pronounced photonic properties and retained their ordered structure after annealing at 1000 °C for 2 h. Increasing the filling fraction of crystalline nanoparticles in the templates should enable production of fully functional 3D photonic crystals for applications in high-temperature photonics.

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Section: Resultsmentioning

confidence: 99%

Vertical Convective Coassembly of Refractory YSZ Inverse Opals from Crystalline Nanoparticles

Kubrin

Rosário

Lee

et al. 2013

ACS Appl. Mater. Interfaces

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“…Both research groups concluded that the higher the porosity in the YSZ, the lower the value in hardness. (Hasanuzzaman et al, 2008). Table 14 lists the results of Hasanuzzaman"s research group for both Tosoh and Technox powders.…”

Section: Scanning Electron Microscopy Resultsmentioning

confidence: 99%

“…Sintering offers a great opportunity to increase the hardness of nano YSZ powders (Hasanuzzaman et al, 2008). Nano powders have unique mechanical properties in strength, modulus and toughness as mentioned previously (Gutsch et al, 2004).…”

Section: )mentioning

confidence: 90%

“…Tables Table 1. Processing parameters for laser shock processing of metals (Montross et al, 2002) Table 13. Density, hardness and fracture toughness values (Hasanuzzaman et al, 2008)…”

Section: Dedicationmentioning

confidence: 99%

“…4) Bulk Young"s modulus of YSZ (200 GPa) was used for the MC samples.However, due to the Young"s modulus of nanomaterials depending on size, surface orientation, crystal orientation, and geometry(Gutsch et al, 2004;Sun and Zhang, 2003) compared to their bulk counterparts a lower Young"s modulus was used. The 194 GPa Young"s modulus was determined from Hasanuzzaman"s research group who characterized nano YSZ powders(Hasanuzzaman, et al, 2008). Porosity of 30 % was assumed for MC and NC samples(Jang and Matsubara, 2005)The assumed Density, Young"s Modulus and Flextural Strength for bulk YSZ was adjusted using the rule of mixtures (E YSZ = v*E Bulk + (1-v)*E Porosity = 0.7*E Bulk ) to account for the porosity.…”

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confidence: 99%

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Effect of nano-TiO2 on properties of 3 mol% yttria-stabilized zirconia ceramic via layered extrusion forming

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Approach for sintering nano-sized yttria-stabilised zirconia

Cited by 5 publications

References 0 publications

Vertical Convective Coassembly of Refractory YSZ Inverse Opals from Crystalline Nanoparticles

Vertical Convective Coassembly of Refractory YSZ Inverse Opals from Crystalline Nanoparticles

Laser shockwave sintering of micro and nanoscale powders of yttria-stabilized zirconia

Effect of nano-TiO2 on properties of 3 mol% yttria-stabilized zirconia ceramic via layered extrusion forming

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