Microstructure and Properties of Atmospheric Plasma Sprayed (Al,Cr)O-TiO Coatings from Blends.

Coatings prepared from chromia-rich (Al,Cr)O solid solution (ss) feedstock powders are intended to improve the properties of CrO coatings, but are rarely studied so far. In this work, the processability of a commercial (Al,Cr)O solid solution (ss) powder containing 78 wt.% CrO by atmospheric plasma spraying (APS), the corresponding coating microstructures and properties were investigated.

Changes in the Coating Composition Due to APS Process Conditions for AlO-CrO-TiO Ternary Powder Blends.

Thermally sprayed coatings from the single oxides and binary compositions of the AlO-CrO-TiO system show multifunctional properties. Ternary compositions are promising for further improvement in their performance. The stability of the composition during coating formation is an important issue for blended feedstock powders in order to obtain the desired properties.