Untitled
Language
en
Article de revue
This item was published in
ACS Applied Materials & Interfaces. 2011, vol. 3, n° 4, p. 1319-1324
Washington, D.C. : American Chemical Society
English Abstract
Two Co<sub>1−<i>x</i></sub>Mg<sub><i>x</i></sub>MoO<sub>4</sub> oxide compositions (<i>x</i> = 0 and <i>x</i> =0.4) were investigated as potential pressure indicators. The first order phase half-transition induced by ...Read more >
Two Co<sub>1−<i>x</i></sub>Mg<sub><i>x</i></sub>MoO<sub>4</sub> oxide compositions (<i>x</i> = 0 and <i>x</i> =0.4) were investigated as potential pressure indicators. The first order phase half-transition induced by pressure application from the β to the α form, i.e. from the high temperature/low pressure form to the high pressure/low temperature form, was studied thanks to the powder diffuse reflection (color) evolution versus the applied pressure. Three key parameters were analyzed: (i) the magnesium content, (ii) the powder grain sizes, (iii) the pressure application mode (uniaxial or isostatical). It was shown these three parameters allow tuning the transition pressure in a wide range from few bars to few kbars.Read less <
English Keywords
Phase transition
Piezochromism
Pressure indicators
Color
Pigments
Molybdates
Origin
Hal imported