XRF is OK for testing the surface down to a depth of only 5 microns.
Beware, however.
Pt an W** are of approximately the same density, so XRF testing inconclusive for Pt plated W.
**W = Wolfram, otherwise known as tungsten.
Beware, however.
Pt an W** are of approximately the same density, so XRF testing inconclusive for Pt plated W.
**W = Wolfram, otherwise known as tungsten.