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Strength and Magnetic Properties of a Laminated Composite of Magnetic Metal Foil and Zirconia
Author(s) -
Moorhead Arthur J.,
Kim HyounEe
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb01922.x
Subject(s) - materials science , foil method , composite material , hot pressing , composite number , ceramic , metal , core (optical fiber) , pressing , cubic zirconia , flexural strength , fracture (geology) , metallurgy
A layered composite material composed of magnetic metal foil and ZrO 2 was fabricated by hot‐pressing. The interfacial strength between the metal and the ceramic increased with hot‐pressing temperature up to 1250°C, and decreased thereafter because of excessive reactions at the interface. The maximum interfacial fracture strength obtained was 420 MPa. Reasonably good magnetic properties, i.e., permeabilities greater than 2000 and ac core losses less than 100 W/kg, were obtained from these specimens. Magnetic core materials fabricated in this process can thus be used under severe conditions such as high temperature and high speed rotation with little dimensional tolerance.