Fundamental Principles Underlying the Chemical Corrosion of Glass

JSGT 1936 V20 T257-T278

The question to be answered is, how can the numerical values for the susceptibility to attack obtained by present methods be replaced by scientific constants. The time laws (parabolic and logarithmic laws) always contain two constants. In principle, therefore, two points for a given temperature and a reactive liquid are introduced into the time curve. The basis of measurement is the amount of decomposed glass per unit surface area or the thickness of the film removed. To obtain scientifically accurate constants, the greatest care must be exercised that the liquid is stirred at a sufficient rate that the glass is in an untreated condition and the surface area known.

Edwin Berger