Design and fabrication of porous ZrO2/(ZrO2+Ni) sandwich ceramics with low thermal conductivity and high strength

Rubing Zhang; Rujie He; Wenbin Zhou; Yuesheng Wang; Daining Fang

doi:10.1016/j.matdes.2014.05.006

Design and fabrication of porous ZrO₂/(ZrO₂+Ni) sandwich ceramics with low thermal conductivity and high strength

Rubing Zhang^*, Rujie He, Wenbin Zhou, Yuesheng Wang, Daining Fang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

3Y-ZrO₂/(3Y-ZrO₂+Ni) sandwich ceramics were fabricated through cold isostatic pressing and pressureless sintering. Porous 3Y-ZrO₂ ceramics with large connecting open pores and permeability were used as interlayers for insulation, whereas outer metal-ceramic layers were used as bearing loads. Microstructures and properties of the porous ZrO₂ and ZrO₂/(ZrO₂+Ni) sandwich ceramics were investigated in detail. The ZrO₂/(ZrO₂+Ni) sandwich ceramics exhibited better mechanical properties than the monolithic porous ZrO₂ ceramics at the same low thermal conductivity (approximately 0.85W/mK). The mechanical properties of the sandwich ceramics were influenced by metal toughening and sintering-induced residual thermal stress.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Materials and Design
Volume	62
DOIs	https://doi.org/10.1016/j.matdes.2014.05.006
Publication status	Published - Oct 2014
Externally published	Yes

Keywords

E. Mechanical property
E. Thermal insulation
F. Microstructure

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10.1016/j.matdes.2014.05.006

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title = "Design and fabrication of porous ZrO2/(ZrO2+Ni) sandwich ceramics with low thermal conductivity and high strength",

abstract = "3Y-ZrO2/(3Y-ZrO2+Ni) sandwich ceramics were fabricated through cold isostatic pressing and pressureless sintering. Porous 3Y-ZrO2 ceramics with large connecting open pores and permeability were used as interlayers for insulation, whereas outer metal-ceramic layers were used as bearing loads. Microstructures and properties of the porous ZrO2 and ZrO2/(ZrO2+Ni) sandwich ceramics were investigated in detail. The ZrO2/(ZrO2+Ni) sandwich ceramics exhibited better mechanical properties than the monolithic porous ZrO2 ceramics at the same low thermal conductivity (approximately 0.85W/mK). The mechanical properties of the sandwich ceramics were influenced by metal toughening and sintering-induced residual thermal stress.",

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author = "Rubing Zhang and Rujie He and Wenbin Zhou and Yuesheng Wang and Daining Fang",

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T1 - Design and fabrication of porous ZrO2/(ZrO2+Ni) sandwich ceramics with low thermal conductivity and high strength

AU - Zhang, Rubing

AU - He, Rujie

AU - Zhou, Wenbin

AU - Wang, Yuesheng

AU - Fang, Daining

PY - 2014/10

Y1 - 2014/10

N2 - 3Y-ZrO2/(3Y-ZrO2+Ni) sandwich ceramics were fabricated through cold isostatic pressing and pressureless sintering. Porous 3Y-ZrO2 ceramics with large connecting open pores and permeability were used as interlayers for insulation, whereas outer metal-ceramic layers were used as bearing loads. Microstructures and properties of the porous ZrO2 and ZrO2/(ZrO2+Ni) sandwich ceramics were investigated in detail. The ZrO2/(ZrO2+Ni) sandwich ceramics exhibited better mechanical properties than the monolithic porous ZrO2 ceramics at the same low thermal conductivity (approximately 0.85W/mK). The mechanical properties of the sandwich ceramics were influenced by metal toughening and sintering-induced residual thermal stress.

AB - 3Y-ZrO2/(3Y-ZrO2+Ni) sandwich ceramics were fabricated through cold isostatic pressing and pressureless sintering. Porous 3Y-ZrO2 ceramics with large connecting open pores and permeability were used as interlayers for insulation, whereas outer metal-ceramic layers were used as bearing loads. Microstructures and properties of the porous ZrO2 and ZrO2/(ZrO2+Ni) sandwich ceramics were investigated in detail. The ZrO2/(ZrO2+Ni) sandwich ceramics exhibited better mechanical properties than the monolithic porous ZrO2 ceramics at the same low thermal conductivity (approximately 0.85W/mK). The mechanical properties of the sandwich ceramics were influenced by metal toughening and sintering-induced residual thermal stress.

KW - E. Mechanical property

KW - E. Thermal insulation

KW - F. Microstructure

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DO - 10.1016/j.matdes.2014.05.006

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EP - 6

JO - Materials and Design

JF - Materials and Design

ER -

Design and fabrication of porous ZrO₂/(ZrO₂+Ni) sandwich ceramics with low thermal conductivity and high strength

Abstract

Keywords

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