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Thermal history coating
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<p>A thermal history coating (THC) is a robust coating containing various non-toxic <a href="/facts/Chemical_compound/37FXqqtv">chemical compounds</a> whose <a href="/facts/Crystal_structure/bJ4bCeHd">crystal structures</a> irreversibly change at high temperatures. This allows for temperature measurements and thermal analysis to be performed on intricate and inaccessible components, which operate in harsh environments. Like <a href="/facts/Thermal_barrier_coating/zlq9gWaj">thermal barrier coatings</a>, THCs provide protection from intense heat to the surfaces on which they are applied. The temperature range that THCs provide accurate temperature measurements in is 900 °C to 1400 °C with an accuracy of ±10 °C. </p>