Gasses in glass

JSGT 1959 V43 T359-T403

It appears that in the case of optical glass manufacture the main sources of blisters are: (a) gases liberated from the pores in refractory walls; (b) gases which saturate the molten glass and which evolve as blisters on mechanical stirring. Rate of melting, kinetics of refining actions, the exhaustion of refining agents, play an important part in blister occurrence. There are many problems which require further study, e.g. interaction between various gases (particularly carbon dioxide) and molten glass, the glass-forming processes and the refining action.

V. T. Slavyanski, translated by S. Kruszewski