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

Lei, Qian; Yang, Li; Li, Guanjin; Jiang, Wenming; Zhao, Fan

doi:10.1016/j.jeurceramsoc.2020.05.027

Cited by 20 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We believe that this method can be used to create porous substrates for high-temperature applications . Both hand-shaped and machined objects (Figure a–e) demonstrated linear shrinkage of ∼22% in agreement with reported values for YSZ in the literature − from the dried state to the sintered state (Figure S7) to reach a density of 5.95 ± 0.02 g cm –3 with no coarse imperfections or cracks (Figure f).…”

Section: Results and Discussionsupporting

confidence: 88%

Polymer Bridging Induced by a Single Additive Imparts Easy-To-Implement Green Machinability to Yttria-Stabilized Zirconia

Zemberekci

Demir

Akaoğlu

et al. 2021

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Cold isostatic pressing, gelcasting, and protein coagulation are the main methods to produce machinable green bodies of ceramics. They generally employ multiple additives, such as binders, dispersants, and coagulants, and require numerous steps to embody a green body that can withstand further shaping and machining. This study reports a method that forms a ceramic dough that can be manipulated by hand, cut, or pushed into a mold. This facile method relies on a single additivea linear copolymerto homogeneously coagulate yttria-stabilized zirconia through polymer bridging. The structure of the additive is systematically designed, and the amount to be used in the formulations is optimized through electrokinetic and rheological studies. The use of this additive at 1 wt % generates ceramic objects with ∼22% shrinkage and a density of 5.95 ± 0.02 g cm −3 after sintering and enables the fabrication of intricate shapes such as structures with triangle and hexagonal cavities via laser cutting and holes in high aspect ratio objects via conventional machining.

show abstract

Section: Results and Discussionsupporting

confidence: 88%

Polymer Bridging Induced by a Single Additive Imparts Easy-To-Implement Green Machinability to Yttria-Stabilized Zirconia

Zemberekci

Demir

Akaoğlu

et al. 2021

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…Qian applies the TiO 2 /VACF photocatalytic layer on the surface of the purification layer of the air purifier and finds that different UV lamp powers have different photocatalytic degradation efficiency of formaldehyde in the air purifier. Studies show that when the power of UV lamp changes from 20 W to 61 W, the photocatalytic efficiency of the TiO 2 /ACF photocatalytic layer on formaldehyde increases significantly [ 8 ]. The reaction time of gaseous pollutants on the surface of a photocatalyst of the air purifier is also an important factor to be considered in design.…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Free Formaldehyde on Chemical Structure and Thermal Properties of Nano-Titanium Dioxide Resin

Wang

Zhong

2022

International Journal of Analytical Chemistry

View full text Add to dashboard Cite

In order to understand and improve the degradation rate of formaldehyde, the study on the chemical structure and thermal properties of nano-titanium dioxide resin by free formaldehyde was proposed. In this research, nano-titanium dioxide was prepared by the low temperature hydrolysis method and characterized by using the scanning electron microscope (SEM) and X-ray diffraction (XRD). The degradation behavior of formaldehyde was studied by using the degradation rate of formaldehyde in the container as the evaluation index. The influence of the photocatalytic coating on the degradation rate of formaldehyde under different loading conditions, different temperatures, and different humidity was investigated. The experimental results show that the formaldehyde degradation rate of the photocatalytic coating prepared by loading 5 g nano-TiO2 into a 200 g emulsion system can reach 93% under the conditions of room temperature of 25°C, humidity of 50%, and UV lamp irradiation of 120 min. Conclusion. This study is obviously better than the commercial P25 nano-titanium dioxide degradation effect of formaldehyde.

show abstract

“…According to the current state of knowledge, ceramic-ceramic composite materials can be formed by a variety of methods. The most frequently used methods include hot pressing [5,6], extrusion [7,8], injection moulding [9,10], slip casting [11,12], tape casting [13,14], electrophoretic deposition [15,16] or centrifugal slip casting [17,18].…”

Section: Introductionmentioning

confidence: 99%

Zirconia–Alumina Composites Obtained by Centrifugal Slip Casting as Attractive Sustainable Material for Application in Construction

et al. 2021

View full text Add to dashboard Cite

This paper focuses on the possibility of adapting the centrifugal slip casting method to obtain zirconia–alumina composite materials in the form of finished tube-shaped products. These types of products, due to their unique properties, can be utilised, for example, in the transport of aggressive substances, even in extreme temperatures or corrosive conditions. The study reports on the two series of zirconia–alumina composites differing in the content of ZrO2—2.5 and 25 vol%. The fabricated and sintered materials were characterised using scanning electron microscopy (SEM), X-ray diffraction (XRD) and stereological analysis. Moreover, a life cycle assessment (LCA) was provided in accordance with the requirements of the ISO 14044 and EN 15805 standards. The obtained data clearly show that the centrifugal slip casting method allows obtaining samples with high density and extremely uniform distribution of the ZrO2 phase in the alumina matrix. The stereological analysis results proved also that the addition of ZrO2 is effective in reducing the growth of Al2O3 grains during the sintering process. The phase analysis carried out by means of XRD showed that during the sintering process, in the case of composites with a lower ZrO2 content (2.5 vol%), the monoclinic to tetragonal transformation of ZrO2 was total, while for samples containing 25 vol% ZrO2, the monoclinic phase remained in a small amount in the final product.

show abstract

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

Cited by 20 publications

References 24 publications

Polymer Bridging Induced by a Single Additive Imparts Easy-To-Implement Green Machinability to Yttria-Stabilized Zirconia

Polymer Bridging Induced by a Single Additive Imparts Easy-To-Implement Green Machinability to Yttria-Stabilized Zirconia

Effect of Free Formaldehyde on Chemical Structure and Thermal Properties of Nano-Titanium Dioxide Resin

Zirconia–Alumina Composites Obtained by Centrifugal Slip Casting as Attractive Sustainable Material for Application in Construction

Contact Info

Product

Resources

About