Effect of addition of palladium on properties of Ag2Hg31) phase

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The effect of palladium addition on the microstructure, compressive strength, creep rate and mercury release rate of Ag2Hg31) phase was evaluated. Experimental results indicated that fairly pure γ1 phase could be fabricated using the present trituration method. The heat treatment of γ1 at 90°C increased porosity level, increased dimensional shrinkage, increased mercury vapour release and enhanced the formation of β1 phase. Addition of palladium in γ1 slowed down the amalgamation reaction, largely suppressed the phase transition to β1 and caused a slight shift in open circuit potential toward the anodic direction. Although the overall anodic polarization profiles did not show a significant effect of palladium, scanning electron microscopy revealed morphological differences between pure and palladium-containing γ1. Addition of palladium in γ1 also increased compressive strength, increased creep resistance, and largely reduced both mercury vapour and ion release rates. Considering overall performance, the optimal palladium content in γ1 seems to be in the range between 0.50 and 0.75 wt%.

Original languageEnglish
Pages (from-to)939-946
Number of pages8
JournalBiomaterials
Volume18
Issue number13
DOIs
Publication statusPublished - 1997 Jul 1

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Palladium
Mercury
Compressive Strength
Compressive strength
Vapors
Creep resistance
Anodic polarization
Porosity
Phase Transition
Electron Scanning Microscopy
silver mercury amalgam
Creep
Hot Temperature
Phase transitions
Heat treatment
Ions
Microstructure
Scanning electron microscopy
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

Cite this

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abstract = "The effect of palladium addition on the microstructure, compressive strength, creep rate and mercury release rate of Ag2Hg3 (γ1) phase was evaluated. Experimental results indicated that fairly pure γ1 phase could be fabricated using the present trituration method. The heat treatment of γ1 at 90°C increased porosity level, increased dimensional shrinkage, increased mercury vapour release and enhanced the formation of β1 phase. Addition of palladium in γ1 slowed down the amalgamation reaction, largely suppressed the phase transition to β1 and caused a slight shift in open circuit potential toward the anodic direction. Although the overall anodic polarization profiles did not show a significant effect of palladium, scanning electron microscopy revealed morphological differences between pure and palladium-containing γ1. Addition of palladium in γ1 also increased compressive strength, increased creep resistance, and largely reduced both mercury vapour and ion release rates. Considering overall performance, the optimal palladium content in γ1 seems to be in the range between 0.50 and 0.75 wt{\%}.",
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Effect of addition of palladium on properties of Ag2Hg31) phase. / Chern, Jiin-Huey; Lee, H. C.; Ju, Chien-Ping.

In: Biomaterials, Vol. 18, No. 13, 01.07.1997, p. 939-946.

Research output: Contribution to journalArticle

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