Fig. 5: Cation diffusion propensity based on CMAS capture capacity measures and the effect of extended reaction time on interaction behavior.
From: Ultra-high entropy rare earth phosphate against environmental corrosion
a CMAS capture ratio of cations corresponding to the three types of apatite, classified based on the spatial distribution of product formation. A higher value indicates a lower efficiency of the element in binding CMAS per unit quantity. b Actual proportion of M group and X group elements in the phosphorus-rich crystals formed after the reaction of MXPOs containing both M and X elements with CMAS. c Depth of the phosphorus-rich dense layer product formed at the MXPOs-CMAS interface after extending the reaction time to 50 h. The number on the line is the average value of thickness. d The composition of the apatite product at the MXPOs-CMAS reaction interface. The shaded area highlights the content from phosphate cations. e M75X25PO, M25X75PO, and XPO-CMAS reaction interface morphology.
