The Development of Various Types of Glass. Part III. The Interaction of Silica, Lime, and Potassium
JSGT 1920 V04 T046-T058 (13 pages)
The commonest alkaline oxide which enters into glass is the oxide of sodium. The oxide of potassium also enters largely into commercial glasses, particularly the better kinds and the present paper deals with the influence of lime upon glasses containing potassium oxide and silica. The two series of melts carried out may be represented by the general molecular formulae (1) 100SiO2.40K2O.xCaO, and (2) 100SiO2.20K2O.xCaO. It will be seen that they only differ from those of the corresponding Na2O series, in that K2O is substituted molecularly for Na2O.
C. J. Peddle
