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

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摘要

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.

源语言	英语
页（从-至）	1-6
页数	6
期刊	Materials and Design
卷	62
DOI	https://doi.org/10.1016/j.matdes.2014.05.006
出版状态	已出版 - 10月 2014
已对外发布	是

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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.",

keywords = "E. Mechanical property, E. Thermal insulation, F. Microstructure",

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

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