Figure 6: Heating rate effects on volcanic ash fusion.
From: Volcanic ash melting under conditions relevant to ash turbine interactions
(a) Mean temperature values of DT, HT and FT of Santa María volcanic ash as function of heating rate. (b) Thermokinetic control on the characteristic temperatures of molten ash. The line is the Arrhenian regression that best fits temperature (T) at DT, as a function of heating rate (q): log (q)=17.325+(−5.32 × 105)/(19.144·T) (r=0.99; n=4). Extrapolation to jet engine conditions (blue box) defines the temperature and heating rate window for which ash may melt and stick to jet engines.
