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Influence of V2O5 on a sealing glass and self-healing VB2-glass composites
Solid State Sciences ( IF 3.5 ) Pub Date : 2021-07-31 , DOI: 10.1016/j.solidstatesciences.2021.106706
K. Sharma 1 , L. Montagne 2 , G.P. Kothiyal 1 , F.O. Méar 2
Affiliation  

The effect of V2O5 addition on sealing properties of glasses with nominal composition (29-x)SiO2–23SrO–32BaO–4Al2O3–10B2O3–2P2O5-xV2O5 (where x = 2; 4; 6 mol.%) is reported. The glass transition temperature (Tg) decreases, and flow temperature increases with an increase in V2O5 content. 29Si and 31P MAS-NMR indicate that silicates are present mainly as Q2 groups, while phosphates are present as Q0 groups. 27Al MAS-NMR data shows that Al is 4-coordinated with oxygens, and11B NMR spectra show the presence of both BO3 and BO4 units. Composite materials were prepared by mixing glasses and vanadium di-boride VB2 (15 vol%). Sealing with Crofer-22 alloy was carried out with composite and revealed good bonding and tight interfaces.



中文翻译:

V2O5 对密封玻璃和自修复 VB2-玻璃复合材料的影响

V 2 O 5添加对标称成分为 (29-x)SiO 2 –23SrO–32BaO–4Al 2 O 3 –10B 2 O 3 –2P 2 O 5 -xV 2 O 5 (其中 x = 2;4;6 mol.%)。随着V 2 O 5含量的增加,玻璃化转变温度(T g )降低,流动温度升高。29 Si 和31 P MAS-NMR 表明硅酸盐主要以 Q 2基团存在,而磷酸盐以 Q 存在0组。27 Al MAS-NMR 数据显示Al 与氧4-配位,11 B NMR 谱显示BO 3和BO 4单元的存在。通过混合玻璃和二硼化钒VB 2 (15 vol%)制备复合材料。使用复合材料进行 Crofer-22 合金的密封,并显示出良好的粘合和紧密的界面。

更新日期:2021-08-07
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