Optimizing isothermal oxidation behavior of the Y-containing Nb-Ti-Si based alloy: The role of precursor Y2O3
Optimizing isothermal oxidation behavior of the Y-containing Nb-Ti-Si based alloy: The role of precursor Y2O3
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DOI：
10.1016/j.corsci.2023.111706
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发表时间：
2023-11
影响因子：
8.3
通讯作者：
Qibin Wang;Qi Wang;Ruirun Chen;Xiaowei Wang;Yan-Qing Su;H. Fu
中科院分区：
文献类型：
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作者：
Qibin Wang;Qi Wang;Ruirun Chen;Xiaowei Wang;Yan-Qing Su;H. Fu
研究了Y2 O3对Nb-Ti-Si基合金抗氧化性能的影响。生成Y含量超过0.3at%的针状Y2 O3。氧化试验表明，在800 °C和1200 °C下，含Y合金的单位面积质量增量低于不含Y合金的单位面积质量增量。无钇合金的氧化层会断裂甚至穿孔。添加Y后，Y2 O3可以与Nb 2 O 5和TiO 2反应生成YNbTiO 6。在界面处的钉扎YNbTiO 6增强了氧化层与衬底之间的粘附力，减缓了氧化层的生长。
The effect of Y2O3on the oxidation resistance of Nb-Ti-Si based alloys was investigated. Acicular Y2O3is generated with Y content exceeding 0.3 at%. Oxidation tests reveal that the mass gain per unit area of the Y-containing alloys is lower than that of the Y-free alloy at 800 °C and 1200 °C. The oxide layer of the Y-free alloy will fracture and even pesting. After adding Y, the Y2O3can react with Nb2O5and TiO2to generate YNbTiO6. The pinned YNbTiO6at the interface enhances the adhesion between the oxide layer and substrate, slowing down the growth of the oxide layer.