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

Rubing Zhang (Lead / Corresponding author), Rujie He, Wenbin Zhou, Yuesheng Wang, Daining Fang

Research output: Contribution to journalArticlepeer-review

39 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 0.85 W/m K). The mechanical properties of the sandwich ceramics were influenced by metal toughening and sintering-induced residual thermal stress.
Original languageEnglish
Pages (from-to)1-6
Number of pages7
JournalMaterials and Design
Volume62
DOIs
Publication statusPublished - Oct 2014

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