Anodic oxidization of Ti–Ni–Si amorphous alloy ribbons and their capacitive and resistive properties

M. Fukuhara, K. Sugawara

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Amorphous titanium oxide film on Ti–Ni–Si amorphous alloy ribbons was prepared by anodic polarization process in ten kinds of electrolyte solutions. Addition of NH4F in (NH4)2SO4 solution accelerates an increase in current, i.e. formation of soluble Ti-fluoride complexes, resulting in the amorphous titanium oxide layers with nanometer-sized pores. Pore size decreases down to 12 nm with decreasing of applied voltage from 30 to 5 V. However, parallel capacitance Cp, series capacitance Cs, and RCs constant increase with decrease of pore size from 23 to 18 nm and then decrease in pore size region from 18 to 12 nm by formation of penetrating tunnels in the layer. It needs further enhancement of RCs for realization of superior electric storage capacitor.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalThin Solid Films
Volume595
DOIs
Publication statusPublished - 2015 Nov 1

Keywords

  • Amorphous alloys
  • Amorphous titanium oxide film
  • Electric storage devices
  • Fluoride ions
  • Nanometer-sized pores

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Anodic oxidization of Ti–Ni–Si amorphous alloy ribbons and their capacitive and resistive properties'. Together they form a unique fingerprint.

  • Cite this