According to Fig. 2 and Eq. (2), the fifit line of ln DW/A versus ln h is obtained based on the measured weight gains. As shown in Fig. 4, the predicted values are always slightly higher than the measured values because the oxygen absorbed by Ti–6Al– 4V alloy during oxidation is used not only for the formation of oxide scale but also for the formation of the alpha case .

According to Fig. 2 and Eq. (2), the fifit line of ln DW/A versus ln h is obtained based on the measured weight gains. As shown in Fig. 4, the predicted values are always slightly higher than the measured values because the oxygen absorbed by Ti–6Al– 4V alloy during oxidation is used not only for the formation of oxide scale but also for the formation of the alpha case .