Journal of Mineralogical and Petrological Sciences
Online ISSN : 1349-3825
Print ISSN : 1345-6296
ISSN-L : 1345-6296
LETTERS
Sintering nanocrystalline diopside from pulverized diopside crystals
Yumiko TSUBOKAWA Masahiro ISHIKAWA
Author information
JOURNAL FREE ACCESS

2017 Volume 112 Issue 3 Pages 127-131

Details
Abstract

The sintering behavior of diopside nano–sized powder was studied. We successfully fabricated diopside nano–sized powders from naturally occurring diopside single crystal (Ca0.92Na0.07Mn0.01Mg0.93Fe0.01Al0.06Si2O6). Diopside 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 G3G03 = kt, where G is the grain size after time t, G0 is the grain size at t = 0, and k is a rate constant.

Content from these authors
© 2017 Japan Association of Mineralogical Sciences
Previous article Next article
feedback
Top