Acoustic characteristics of Ni-Nb-Zr-H glassy alloys by ultrasonic shear waves

Mikio Fukuhara, Asahi Kawashima, Shinichi Yamaura, Akihisa Inoue

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The propagation characteristics of shear horizontally polarized (SH) waves passing through (Ni42Nb28 Zr30)100-xHx (x = 0-15.2) glassy alloys were investigated as a function of hydrogen content. With an increase in hydrogen content, the propagation time and main frequency of the receiving waves show increase and decrease, respectively, indicating expansion in average atomic distance which comes from solution of hydrogen. In sharp contrast to crystalline alloys, the decrease in damping ratio and the delay in phase with increasing hydrogen suggest a strong settlement of hydrogen into four-coordination sites surrounded tetrahedrally by four Zr atoms and the resulting increase in dynamic elasticity, respectively.

Original languageEnglish
Pages (from-to)R50-R52
JournalPhysica Status Solidi - Rapid Research Letters
Volume1
Issue number2
DOIs
Publication statusPublished - 2007 Mar

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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