Ma. Sainz et al., REACTIVE COATING OF ZIRCON ON MULLITE AND MULLITE-ALUMINA SUBSTRATES, Journal of the American Ceramic Society, 80(1), 1997, pp. 241-244
A stable zirconia coating of 20-30 mu m thickness on a mullite substra
te with a different alumina/silica ratio was obtained by reactive coat
ing of zircon, It is shown that the Al2O3/SiO2 ratio of the mullite su
bstrate drastically affects the morphology of the zirconia coating. Th
e results are explained on the basis of the Al2O3-SiO2-ZrO2 phase equi
libria.