Formation of 3D tubular cannel in fully densified zirconia ceramics by free-foaming method using superplasticity

Bhuiyan, Tarequl Islam; Hayashi, Hidetaka; Kishimoto, Akira

doi:10.1016/j.ceramint.2010.08.016

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…Typical compacts combined 3 mol % yttria-stabilised zirconia (3YSZ) and silicon carbide (SiC) as follows (Fig. 1). 3) 17) Approximately 4 g of 3YSZ powder (TZ3Y, Tosho, Tokyo, Japan) was used as the matrix to create the macroscopic ceramic foam. The high-temperature foaming agent was 0.1 g of silicon carbide powder (Grade-UF, Ibiden, Aichi, Japan) compressed into a pellet in a º10-mm die under 30 MPa.…”

Section: Demonstration Of Solid-state Foaming Of Ceramics 21 Fabricamentioning

confidence: 99%

“…Figure 9(b) shows a schematic for the production of spiral channels in a ceramic body. 17) The foaming agent-containing slurry was placed onto the zirconia sheet in a straight line using copper stencils and was dried for 2 h in air. Next, 10-mm-diameter (º) core cylindrical powder compacts were fabricated by unitary pressing using 3YSZ powder.…”

Section: Three-dimensional Patterningmentioning

confidence: 99%

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Superplastically foaming method for inclusion of closed pores in fully densified ceramics

Kishimoto

2013

J. Ceram. Soc. Japan

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Porous ceramics incorporate pores to improve material properties, including thermal insulation, while maintaining inherent ceramic properties such as corrosion resistance and high mechanical strength. Conventional porous ceramics are usually fabricated by insufficient sintering that excludes pores; thus, it must be terminated in an early stage to maintain high porosity. The premature termination leads to degraded strength and durability. We developed a superplastic-foaming method to fabricate ceramic foams in the solid state. In this method, the inserted foam agent evaporates after full densification of the matrix at the sintering temperature. Closed pores expand by superplastic deformation driven by the gas pressure. The pores are introduced after sintering the solid polycrystal. Then, only closed pores are introduced, improving the insulation of gas, sound and heat. The pore walls are fully densified for high mechanical strength. Compared to the melt-foaming method, this technique is practical because the fabrication temperature is far below the material's melting point, and it does not require moulds. In addition, the size and location of the pores can be controlled by the amount and position of the foam agent.

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Section: Demonstration Of Solid-state Foaming Of Ceramics 21 Fabricamentioning

confidence: 99%

Section: Three-dimensional Patterningmentioning

confidence: 99%

Superplastically foaming method for inclusion of closed pores in fully densified ceramics

Kishimoto

2013

J. Ceram. Soc. Japan

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“…To overcome this drawback, we have already proposed a superplastically foaming method [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] . In this method, foaming agents instead of pore formers are incorporated into ceramics matrix powder to make a green compact.…”

mentioning

confidence: 99%

Utilizing Rice Husk for Ceramic and Glass Foams as Matrix and Foaming Agent

Matsuoka

Teranishi

Hayashi

et al. 2018

J. Jpn. Soc. Powder Powder Metallurgy

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Rice husk was converted to SiC or SiO 2 and used for making porous ceramics or foamed glass. The rice husk derived SiC was aggregated, but by adding a peptizer it was possible to disperse to the same extent as commercially available SiC. Such dispersed SiC derived from rice husk was able to be used as a foaming agent to fabricate ceramic foams. We also succeeded in making foamed glass using rice husk derived SiC as a foaming agent and in fabricating foamed glass using rice husk derived silica matrix added with glass modifiers.

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Gastight, Closed Pore Inclusive Porous Ceramics Through a Superplastically Foaming Method

Kishimoto

Tohji

Teranishi

et al. 2016

Ceramic Transactions Series

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Formation of 3D tubular cannel in fully densified zirconia ceramics by free-foaming method using superplasticity

Cited by 6 publications

References 13 publications

Superplastically foaming method for inclusion of closed pores in fully densified ceramics

Superplastically foaming method for inclusion of closed pores in fully densified ceramics

Utilizing Rice Husk for Ceramic and Glass Foams as Matrix and Foaming Agent

Gastight, Closed Pore Inclusive Porous Ceramics Through a Superplastically Foaming Method

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