SPI Supplies

Chromium Oxide (Synthetic) Cr2O3

Source: unknown

Element%Oxide%
O31.57
Cr68.43 Cr2O3100.00
Sum100.0 Sum100.0
200 µ m
This is a reflected light micrograph of a a synthetic, polished, carbon coated chromium oxide crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument, and in this case reminds the user that this synthetic material has two phases - minor amounts of metallic chromium mixed with the oxide. This is a good standard for high concentrations of chromium. We used to use natural chromite but it was impossible to find homogeneous crystals.
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Cautionary Note
The compositional and other data shown here are intended to convey typical values for this item and do not neccessarily correspond in detail to standard mounts supplied in the past or to be supplied in the future. Items are changed from time to time as stock is exhausted or alternate choices are preferred. These data should, however, give someone contemplating the purchase of an SPI standard a fair indication of what they may expect to receive. Records are kept of all mounts sold so that, should you lose your documentation at some time in the future, we will be happy to replace it at no charge.


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Wednesday July 09, 2008
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