Coating systems including infiltration coatings and reactive phase spray formulation coatings

A method comprising

• depositing a liquid phase of an infiltration coating of a coating system on a thermal barrier coating of an article, the liquid phase of the infiltration coating comprising one or more parts of one or more of yttrium nitrate, gadolinium nitrate, tantalum ethoxide, or strontium nitrate, wherein, responsive to the infiltration coating being deposited on the thermal barrier coating of the article, the liquid phase of the infiltration coating infiltrates at least some pores of a bulk of the thermal barrier coating and decomposes to a solid phase of the infiltration coating comprising one or more parts of one or more of yttrium oxide, gadolinium oxide, tantalum oxide, or strontium oxide within the at least some pores of the thermal barrier coating to coat a portion of the at least some pores of the bulk of the thermal barrier coating, wherein the infiltration coating is configured to reduce a porosity of the thermal barrier coating;
• and
• depositing a reactive phase spray formulation coating of the coating system on a surface of the thermal barrier coating, wherein, responsive to the reactive phase spray formulation coating being applied to the thermal barrier coating, the reactive phase spray formulation coating is configured to react with dust deposits on the surface of the thermal barrier coating, the reactive phase spray formulation coating comprises a base material and a binder material, the base material and the binder material being an yttrium stabilized zirconium oxide material,
• wherein the infiltration coating reduces an amount of spalling of the thermal barrier coating by a first amount, and the reactive phase spray formulation coating reduces an amount of spalling of the thermal barrier coating by a second amount, wherein the coating system including the infiltration coating and the reactive phase spray formulation coating reduces an amount of spalling of the thermal barrier coating by a third amount that is greater than the first amount combined with the second amount.