Section for analysis and the measured “spectra”.
You can see here very nicely once again the individual bodies in the paste. For X-ray spectroscopy, individual measuring points “Spectrum xx” are marked on the graph. You will receive the exact evaluations for exactly these points in the following. The theory is on page one.
Main ingredient
The large bodies (“grains”) in the spectra are extra-hard corundum, a fairly common mineral from the mineral class of oxides and hydroxides. It crystallizes in the trigonal crystal system with the chemical composition Al₂O₃ and is therefore chemically nothing else than aluminum oxide. But see for yourself:
Filler
Let us now turn to the more favorable filler, which we naturally also want to determine. A few impurities (probably quartz sand) are also at the start, but negligible in terms of quantity. And yes, it is normal zinc oxide ZnO.
Interim summary
The Kingpin Cooling KPx is an Al₂O₃ (corundum) based thermal paste with a grain size between 1.5 and 5 µm and quite ordinary, finely ground zinc oxide. The rest is a silicone oil and some paint for the “Beautiful living with Kingpin”.
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