Interactions between silver inner electrode and Fe-Si-Cr alloy of metal multilayer chip inductors

Yung Ping Wu, Hsin Yun Chiang, Hsing I. Hsiang

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The silver diffusion and chemical reaction between Fe-Si-Cr alloy and Ag during multilayer metal power inductor preparation are investigated using scanning electron microscopy, field emission transmission electron microscopy and multipurpose X-Ray thin-film diffractometer. The experimental results show that a large amount of inner electrode, Ag, volatilize and diffuse under air atmosphere during co-firing, resulting in the reaction between Ag and thermally grown oxide layer, Cr2O3, forming flaky AgCrO2. The p-type semiconductor, AgCrO2 will cause the insulation degradation of the co-fired Fe-Si-Cr alloy multilayer chip inductors, hence reducing the power conversion efficiency due to the increase in eddy current loss.

Original languageEnglish
Article number085006
JournalAIP Advances
Volume8
Issue number8
DOIs
Publication statusPublished - 2018 Aug 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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