Characteristics of aluminum -nickel aluminate composite

Sang Jin Lee, Sang Ho Lee

Research output: Contribution to journalArticlepeer-review

Abstract

A composite consisting of nickel aluminate ceramic - aluminum metal was fabricated by melting the metal in the ceramic skeleton. The porous nickel aluminate skeleton was fabricated by a polyurethane foam process with synthesized nickel aluminate powder. In the fabrication of the composite, powder-type aluminum alloys were melted in the porous nickel aluminate. The aluminum alloy containing Mg and Mn was used and melted in nitrogen atmosphere at 1000°C. The mechanical properties of the composites, which have a unique microstructure consisting of continuous phases of ceramic and metal, were examined according to the pore size of the nickel aluminate skeleton. A flexural strength of 370 MPa was obtained in the composite prepared from the nickel aluminate skeleton having a pore size of 300 μm, showing a non-brittle fracture behavior. A numerical study for the prediction of the mechanical failure behavior of the composite was also performed under the modification of finite - element code in DIANA.

Original languageEnglish
Pages (from-to)243-246
Number of pages4
JournalJournal of Ceramic Processing Research
Volume14
Issue number2
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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