Recently, the growth of manganese silicate ([Mn.sub.2]Si[O.sub.4]) and manganese dioxide (Mn[O.sub.2]) barrier layers on the Si[O.sub.2] surface through the deposition of metal Mn and Mn/Cu alloys after high temperature annealing has attracted considerable investigations [1, 2].
Hughes, "Chemical and structural investigation of the role of both Mn and Mn oxide in the formation of manganese silicate barrier layers on Si[O.sub.2]," Journal of Applied Physics, vol.
Hughes, "Synchrotron radiation photoemission study of in situ manganese silicate formation on Si[O.sub.2] for barrier layer applications," Applied Physics Letters, vol.
Now, if that same silica lining were to be exposed to cast iron with a high manganese content that resulted in the formation of manganese oxide, that oxide, circulated in suspension over the surface of the silica lining, would convert some of the silica refractory to a manganese silicate glass.
Once in contact with the alumina structure, the manganese silicate glass becomes unstable.
Cracking opens the structure to the penetration of more manganese silicate glass and causes rapid erosion.
The brown to black manganese silicate neotocite has a low degree of crystallinity and is not well defined.
Saneroite, a rare sodium and manganese silicate, was found for the first time at the Gambatesa mine as tabular triclinic crystals up to a few millimeters, associated with braunite and barite.
Ladle slag is primarily a combination of iron and manganese silicate
. Manganese sulfides have also been identified in the slag, as have rosettes of cristobalite, a silica phase that commonly forms in metal silicates.