... Dehydration and formation of KU-1 silica glass surface defects under annealing . Abstract Formation of KU-1 silica glass surface defects at annealing is considered. Based on experimental data obtained by annealing of silica glass samples in temperature range 800-980°C, it is showed that internal stress forming due to dehydration of surface zone is main cause of the surface defects. ... Moscow University Chemistry Bulletin . 2010, Vol. ... Moscow State University, 2002 . ...