Environmental　silicate　debris　such　as　sand,　dust　and　volcanic　ash　is　regarded　as　a　major　hazard　for　aviation　safety.　During　the　service　process　of　gas　turbines,　these　ingested　silicate　ashes　can　melt,　impact　and　adhere　to　the　thermal　barrier　coatings　(TBCs)　covered　on　the　hot-section　components,　facilitating　their　structure　and　property　instability.　Here,　we　prepared　a　novel　NdYbZr2O7　coating　which　is　expected　to　mitigate　this　issue.　We　comparatively　study　the　infiltration　behavior　of　natural　volcanic　ash　and　synthetic　CMAS　within　it　at　1250　degrees　C　and　1300　degrees　C.　In　the　case　of　volcanic　ash,　the　lower　CaO　content　improves　the　Nd3+　and　Yb3+　solubility,　suggesting　more　NdYbZr2O7　coating　has　to　be　consumed　to　saturate　the　melt.　The　chemical　reaction　is　delayed,　and　melt　has　more　time　to　infiltrate.　As　a　result,　although　volcanic　ash　has　a　relatively　high　viscosity,　it　exhibits　a　larger　infiltration　depth　than　CMAS.　Apatite　with　a　theoretical　A(4)(I)A(6)(II)　(SiO4)(6)X-2　structure　is　the　main　corrosion　product　for　either　volcanic　ash　or　CMAS.　The　calculated　AI:　AII　ratios　are　0.14　and　0.30　respectively,　which　indicates　that　precipitating　per　unit　apatite　needs　to　consume　more　NdYbZr2O7　coating.　In　comparison　with　traditional　YSZ　coating,　NdYbZr2O7　coating　exhibits　a　better　anti-corrosion　performance　by　rapidly　precipitating　crystalline　grains　(c-ZrO2　and　apatite)　and　further　building　dense　reaction　layer.