Study of nanostructured coatings prepared by low-pressure plasma spraying with a supersonic jet

Abstract

Zirconia coatings on copper prepared by the low-pressure plasma spraying of a ZrO2 + 5% Y2O3 powder through a mesh mask exhibit high resistance and low thermal conductivity in tests in the nitrogen plasma stream of a plasmatron. Data on the coating structure and its changes during thermal testing derived by scanning electron microscopy, X-ray diffraction analysis, and nuclear backscattering spectrometry are discussed.