Schriften der Theodor-Storm-Gesellschaft, Schrift 13

Physicochemical model for predicting molten glass density

“…The temperature range (DT) and number of data points (n) used are indicated, together with the estimated fraction of four-coordinate boron (N 4 ) (refer to text). a Coe66, Kno92 and Sha51 refer to publications [46], [22] and [1], respectively. Table 4) and the data in Table 3.…”

“…These data cannot be used to determine the partial molar volumes because of the systematic bias introduced by prior smoothing. The data usable to model the densities between 900 and 1300°C are thus restricted to the values published by Coenen [46], Shartsis et al [1] and Knoche et al [22]. Taking into account the partial molar volumes for the oxides of other published silicate systems, we optimized the partial molar volume of B 2 O 3 by limiting the variation range of the partial volumes of SiO 2 , Na 2 O, K 2 O and Al 2 O 3 to the range of uncertainties specified for previously published molar volume models.…”

Heat capacity of sodium silicate glasses: comparison of experiments with computer simulations

“…That is why room-temperature values, values for glasses with slightly different composition or values extrapolated from lower temperatures [35,38,39,[41][42][43][44][45][46][47][48][49][50][51] have been used for the calculations at 700 K. Despite these uncertainties, the data in table 2 clearly show that the QHCs are one to two orders of magnitude smaller than the experimental errors in C p (typically 1.5-2 J mol −1 K −1 ). Even for NS1 at 700 K the QHC is only about 0.45 J mol −1 K −1 .…”

“…k Room-temperature value. l Value at T = 673 K from [48]. m Average value from data in [44] and [51].…”