Low-pressure-assisted constrained sintering of low-temperature-fire NiCuZn ferrites

Hsing-I Hsiang, Jui Fu Chueh

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The constraining layer, Bi2O3 addition, and uniaxial pressure effects on the microstructure and magnetic properties of low-temperature-fire NiCuZn ferrites during constrained sintering are investigated. It was observed that a ZrO2 green sheet can act simultaneously as a nonmagnetic layer and constraining layer for NiCuZn ferrites during constrained sintering. The required uniaxial pressure necessary to densify NiCuZn ferrites can be decreased significantly, and the grain growth can be promoted by adding Bi2O3 to relieve the sintered internal stress via viscous flow during constrained sintering. This approach is beneficial to the magnetic properties and mass production of large area NiCuZn ferrite substrates.

Original languageEnglish
Pages (from-to)E194-E201
JournalInternational Journal of Applied Ceramic Technology
Volume12
Issue numberS2
DOIs
Publication statusPublished - 2015 May 1

Fingerprint

Ferrites
ferrites
sintering
Fires
Sintering
low pressure
Magnetic properties
Pressure effects
Viscous flow
magnetic properties
Grain growth
Temperature
Ferrite
Residual stresses
viscous flow
pressure effects
residual stress
Microstructure
Substrates
microstructure

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

Cite this

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abstract = "The constraining layer, Bi2O3 addition, and uniaxial pressure effects on the microstructure and magnetic properties of low-temperature-fire NiCuZn ferrites during constrained sintering are investigated. It was observed that a ZrO2 green sheet can act simultaneously as a nonmagnetic layer and constraining layer for NiCuZn ferrites during constrained sintering. The required uniaxial pressure necessary to densify NiCuZn ferrites can be decreased significantly, and the grain growth can be promoted by adding Bi2O3 to relieve the sintered internal stress via viscous flow during constrained sintering. This approach is beneficial to the magnetic properties and mass production of large area NiCuZn ferrite substrates.",
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Low-pressure-assisted constrained sintering of low-temperature-fire NiCuZn ferrites. / Hsiang, Hsing-I; Chueh, Jui Fu.

In: International Journal of Applied Ceramic Technology, Vol. 12, No. S2, 01.05.2015, p. E194-E201.

Research output: Contribution to journalArticle

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