Evaporation behavior of SiO <sub>2</sub> glass doped with various transition metal oxides
Chunyu Cheng, Wei Xie, Hejun Li, Qiangang Fu
Abstract
Abstract To investigate the effect of transition metal oxides on the evaporation characteristic of SiO 2 glass at 1700°C, nine transition metal oxides were added to SiO 2 glass. The results show that V 2 O 5 , MoO 3 , and WO 3 have little effect on the high‐temperature stability of SiO 2 glass due to their evaporation at 1500‐1700°C. Besides, Nb 2 O 5 and Ta 2 O 5 reduce the evaporation of SiO 2 by covering the surface of the sample. Moreover, by improving the content of cristobalite, the evaporation of the SiO 2 ‐Cr 2 O 3 sample decreases. Meanwhile, TiO 2 , ZrO 2 , and HfO 2 are beneficial to decreasing the evaporation of SiO 2 glass because Ti, Zr, and Hf diffuse into c‐SiO 2 . Meanwhile, the SiO 2 ‐HfO 2 sample possesses the least evaporation.