Open AccessOn Properties of Plasma Sprayed Oxide and Metal-Oxide Coatings
Author(s) -
O. Knotek,
R. Elsing,
N. Strompen
Publication year - 1984
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1115/84-gt-289
Subject(s) - materials science , oxide , corrosion , cubic zirconia , abrasion (mechanical) , porosity , molybdenum , metal , thermal shock , metallurgy , composite material , plasma , thermal spraying , coating , ceramic , physics , quantum mechanics
Alumina containing 3% TiO2, Y2O2 (13%)-stabilized zirconia and zirconia (13% Y2O3)-molybdenum powder mixtures (70:30 and 30:70) were sprayed by plasma unter standard conditions on several steel substrates. Intermediate nickelchromium metal layers were used. The adhesive strength of the coatings under static and dynamic stress, the thermal shock resistance were tested as well as wear and corrosion resistance, porosity and other properties of these oxide and oxide metal compound layers. Resistance against friction-abrasion, sometimes in combination with corrosion, can be controlled by pure oxide layers or, dependent on the kind of chemical reactions and mechanical behaviour by oxide molybdenum compounds. Some theoretical aspects of the behaviour of the tested coatings will be discussed.