%0 Journal Article %A Lahmar-Mebdoua, Y. %A Vardelle, Armelle %A Fauchais, Pierre %A Gobin, Dominique %D 2007 %I Begell House %N 2 %P 191-204 %R 10.1615/HighTempMatProc.v11.i2.40 %T HEAT TRANSFER AND NON-EQUILIBRIUM PHASE CHANGE OF LAMELLAE UNDER PLASMA SPRAY CONDITIONS %U https://www.dl.begellhouse.com/journals/57d172397126f956,54d6f69470276e26,640c7e601e185fc1.html %V 11 %X The properties of a plasma-sprayed coating are, to a great extent, controlled by the cooling and solidification of the droplets impinging on the part to be covered. Both processes condition the cooling rate, crystal growth and formation of the crystalline phases. This paper presents a one-dimensional heat transfer model that predicts the cooling and solidification of a liquid lamella deposited on a flat surface. It is based on the solution of the time-dependent heat equation in the splat and the substrate coupled by an interface thermal resistance and takes into account the melt undercooling and crystal nucleation. The calculations are performed for alumina lamellae on steel and alumina substrates. %8 2007-06-06