Sintering nanocrystalline diopside from pulverized diopside crystals

Yumiko Tsubokawa, Masahiro Ishikawa

Research output: Contribution to journalLetter

Abstract

The sintering behavior of diopside nano-sized powder was studied. We successfully fabricated diopside nanosized powders from naturally occurring diopside single crystal (Ca0.92Na0.07Mn0.01Mg0.93Fe0.01Al0.06Si2O6). Di- opside polycrystalline is sintered from powders with an average particle size of <100 nm under argon flow at temperatures ranging from 1130-1280 °C for 0.5-20 h. The average grain size increased with increasing sintering time and sintering temperature while porosity remained nearly constant value of 3-4 vol%. The experimental data of grain growth at 1180 °C can be fit for the following equation G3 - G30 = kt, where G is the grain size after time t, G0 is the grain size at t = 0, and k is a rate constant.

Original languageEnglish
Pages (from-to)127-131
Number of pages5
JournalJournal of Mineralogical and Petrological Sciences
Volume112
Issue number3
DOIs
Publication statusPublished - Jan 1 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

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