The structural stability of dense alumina-silica tubes dipped in molten aluminium was studied in stationary conditions and in stirred melts. Static tests were carried out in air and under protective atmopshere whereas dynamic tests were performed only under protective atmosphere. The temperature of the melt was 925 deg C and the maximum velocity of tubes was 7.5cm/s. Penetration rates, reaction products and microstructural modifications were examined as a function of dipping time and velocity of tubes in the melt.
Origin
Laval University, Quebec, Canada
Journal Title
J Canadian Ceram Soc 66 1 1997 64-71
Sector
Refractories
Class
R 214