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首页> 外文期刊>Physica, B. Condensed Matter >Physical ageing in Se94Sn6 glass induced by gamma irradiation
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Physical ageing in Se94Sn6 glass induced by gamma irradiation

机译：γ辐照在Se94Sn6玻璃中的物理老化

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A differential scanning calorimeter (DSC) has been used to monitor the influence of high-energy Co-60 gamma-irradiation on physical ageing in Se96Sn4 glass. It is observed that the relaxation process in the studied glass is slow after I and 3 years of natural storage, and can be highly accelerated by gamma-irradiation. The glass transition temperature T-g and the endothermic peak area, which is directly related to the relaxation enthalpy Delta h, were found to exhibit a remarkable change after irradiation and also during an additional natural storage for 6 months and 1 year of the irradiated Se96Sn4 glass. T-g value of gamma-irradiated glass increases by 12K; meanwhile, that of additional 6-months- and 1-year-stored glass T-g increases by 19 and 20 K in comparison to its counterpart of 1-year-aged non-irradiated sample. The same trend is also observed for Delta h, which becomes 2.33, 3.61 and 3.65 times that of the 1-year-aged non-irradiated case, respectively, for gamma-irradiated, additional 6-months- and 1-year-stored glass. These indications reveal that gamma-irradiation activates the relaxation of the glass towards a state thermodynamically close to the equilibrium super-cooled liquid state. (C) 2008 Elsevier B.V. All rights reserved.
机译：差示扫描量热仪（DSC）已用于监视高能Co-60γ辐照对Se96Sn4玻璃中物理老化的影响。可以观察到，经过1年和3年自然存储后，所研究玻璃的弛豫过程很慢，并且可以通过伽马射线辐照大大加速。发现玻璃化转变温度T-g和与弛豫焓Δh直接相关的吸热峰面积在辐照后以及在额外自然存储辐照Se96Sn4玻璃6个月和1年期间显示出显着变化。 γ辐照玻璃的T-g值增加12K;同时，与1年龄未辐照样品相比，额外6个月和1年储存的玻璃T-g分别增加了19和20K。对于Δh，也观察到了相同的趋势，对于经过伽马射线辐照的，另外存放了6个月和1年的玻璃，Δh分别为1年未辐照的玻璃的2.33、3.61和3.65倍。 。这些迹象表明，γ辐射激活玻璃向热力学上接近平衡过冷液态的状态松弛。 （C）2008 Elsevier B.V.保留所有权利。

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