I’ve been approached to analyze an alloy which has at least one if not  two Tungsten carbides. I have no explicit Tungsten Carbide std. I do have from my predecessor a mount with several other carbides (from memory, Nb and Ta ones I think—I’m away from the lab today). Push comes to shove, I’ll use W metal and try these carbides…but I wonder if anyone has experience with this and knows if there is any relatively accessible material out there which I might be able to use if not as a primary standard, at least as a secondary one.


John Fournelle
Senior Scientist 
Director, Electron Probe and SEM Lab
University of Wisconsin Dept of Geoscience
Madison, Wisconsin 53706
Cell 608-438-7480

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