Open AccessEffect of V2O5 on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass
Author(s) -
Qihui Lian,
Xingquan Zhang,
Hongjia Ji,
Pengpeng Yu,
Xiaofeng Guo,
Wei Wan,
Haifeng Liu,
Yongchang Zhu,
Haibin Wang,
Jichuan Huo
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab82ca
Subject(s) - borosilicate glass , crystallization , materials science , molybdenum , solubility , glass transition , dissolution , nuclear chemistry , analytical chemistry (journal) , chemistry , metallurgy , composite material , polymer , organic chemistry
Abstact The effect of V 2 O 5 addition on molybdates crystallization tendency, glass structure and chemical durability of aluminoborosilicate glass belonging to SiO 2 -B 2 O 3 -CaO-Na 2 O-Al 2 O 3 -MoO 3 system has been studied. The results confirm that V 2 O 5 addition can effectively suppress the crystallization tendency of powellite and enhance the molybdenum solubility in the glass. The MoO 3 solubility limit is found to be 2.8 mol% in the V 2 O 5 -containing aluminoborosilicate glass. Raman results reveal that V 2 O 5 addition seems to modify the local structural environment of isolated MoO 4 units and increase their chemical disorder in the glass, which is favored for molybdenum incorporation in the glass. The molar volume and glass transition temperature of samples are found to depend on V 2 O 5 content. Product consistency test (PCT) results show that the normalized leaching rates of the V 2 O 5 -containing aluminoborosilicate glass maintain at a fairly low level compared with standard borosilicate glassy waste form.