Abstract Ti45Al8.5Nb was anodized in ethylene glycol and NH4F containing solution to improve the oxidation resistance. Isothermal oxidation test shows that the anodized specimens can provide excellent oxidation resistance and spallation resistance under 1000 °C. During the high temperature oxidation process, a compact and continuous alumina layer would generate on the anodized Ti45Al8.5Nb alloy. This protective alumina layer can efficiently decrease the inward diffusion of oxygen and outward diffusion of the substrate element. The improved oxidation resistance is assigned to the halogen effect caused by the fluorine component generated during the anodization process.

中文翻译：

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Ti45Al8.5Nb合金在含NH4F溶液中阳极氧化的氧化行为

摘要 Ti45Al8.5Nb 在乙二醇和NH4F 溶液中进行阳极氧化以提高其抗氧化性。等温氧化试验表明，阳极氧化后的试样在1000℃下具有优异的抗氧化性和抗剥落性。在高温氧化过程中，阳极氧化的 Ti45Al8.5Nb 合金上会生成致密连续的氧化铝层。该氧化铝保护层可以有效地减少氧的向内扩散和基板元件的向外扩散。改进的抗氧化性归因于阳极氧化过程中产生的氟组分引起的卤素效应。