Direct current arc plasma torches are used in thermal spraying techniques. Research has led to the development of nanostructured coatings by suspension plasma spraying (SPS). However, plasma instabilities lead to heterogeneity and lack of reproducibility of deposits. Efforts to understand the origins of these instabilities have been made and a new approach is proposed here. A method for homogeneously treat the droplets injected into the plasma was developed. Finely structured homogeneous deposits are obtained.
