The kinetics and interface microstructure evolution in the internal oxidation of Ag-3at.%Sn alloy
The kinetics and interface microstructure evolution in the internal oxidation of Ag-3at.%Sn alloy
复制标题
%20动力学%20和%20界面%20显微结构%20演化%20in%20%20内部%20氧化%20of%20Ag-3at.%Sn%20合金
DOI：
10.1016/j.corsci.2015.02.020
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发表时间：
2015
影响因子：
8.3
通讯作者：
Peng Shuming
中科院分区：
文献类型：
--
作者：
Xu Canhui;Yi Danqing;Jiang Yong;Wu Chunping;Zhang Haibin;Peng Shuming
基于内氧化动力学的理论分析，首先推导了内氧化Ag-3at.%Sn合金内的局部氧分压与环境氧化参数的函数关系。进一步结合界面结构稳定性图，定量阐明了Ag-3at.%Sn合金内氧化过程中Ag/SnO2界面结构的演变。预测结果表明，在973 K空气气氛中，Ag-3at.%Sn合金的内氧化以化学计量Ag/SnO2界面为主，而在873 K 3 atm纯氧气氛条件下，形成了富O和化学计量界面的梯度结构。
Based on theoretical analysis of internal oxidation kinetics, the local oxygen partial pressure within the internal oxidized Ag–3at.%Sn alloy was derived as a function of the ambient oxidization parameters firstly. Further combined with the interface structure stability diagram, the evolution of Ag/SnO2interface structures in internal oxidization of Ag–3at.%Sn alloy has been quantitatively clarified. The prediction results indicates that the stoichiometric Ag/SnO2interface dominates in internal oxidation of Ag–3at.%Sn alloy in air atmosphere at 973 K, while a gradient structures with both O-rich and stoichiometric interface were formed at the condition of 3 atm pure oxygen atmosphere at 873 K.