Methods to measure Mg in compact graphite iron (CGI)
Methods to measure Mg in compact graphite iron (CGI)
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I am developing methods to measure Mg content in CGI (also known as vermicular cast iron). I have been told that XRF is not a good way to measure Mg content due to inhomegenity of the samples. What other measurement methods can be used? I don't want to remelt samples because the Mg will burn out so a 'wet chemistry' method would be desirable.





RE: Methods to measure Mg in compact graphite iron (CGI)
There is no need to remelt samples. You can chill cast your sample after Mg treatment to get good results using a OES.
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RE: Methods to measure Mg in compact graphite iron (CGI)
RE: Methods to measure Mg in compact graphite iron (CGI)
You can still use an emission spectroscopy method, but instead of using the arc-spark method on a solid sample, you can use inductively-coupled plasma (ICP) on a liquid sample that has been "digested" in a suitable acid.
http://www.icp-oes.net/
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RE: Methods to measure Mg in compact graphite iron (CGI)
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