V. Gourlaouen et al., ELABORATION BY PLASMA SPRAYING AND CHARACTERIZATION OF GLASSY DEPOSITS IN THE LN(2)O(3) AL2O3 SYSTEMS (LN=DY, Y, ER)/, European journal of solid state and inorganic chemistry, 32(1), 1995, pp. 57-70
Deposits of alumina/rare earth oxides Ln(2)O(3) (Ln = Dy, Y, Er) have
been obtained by plasma spraying. This technique leads to noncrystalli
ne phases for specific compositions. The microstructure of such coatin
gs is very compact (low porosity). This could be suitable for protecti
on of surfaces against corrosive atmosphere. The influence of rare ear
th oxide and mixture composition on the occurence of such glassy coati
ngs is discussed. The thermal behaviour of deposits (devitrification)
and its consequences on mechanical properties are studied.