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Significant enhancement of high temperature oxidation resistance of pure titanium via minor addition of Nb and Si
Corrosion Science ( IF 8.3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.corsci.2020.108430
Jun-Yi Xu , Zhang-Zhi Shi , Zhi-Bo Zhang , Hai-Guang Huang , Xue-Feng Liu

Abstract A novel Ti-0.5Nb-0.5Si (in wt.%) alloy is oxidized at 650∼850 °C for 100 h in air, which shows a significant higher oxidation resistance than pure Ti. The advantage of the alloy becomes more obvious with increasing temperature. At 850 °C for 100 h, mass gain of the alloy only accounts for 12.7% of that of the pure Ti. A key reason is the formation of a Ti2N layer coherent with Ti matrix. The oxide scale of the alloy with less porosity and alleviated stratification creates an environment at the scale/substrate interface favorable for the formation of Ti2N.

中文翻译:

通过少量添加Nb和Si显着提高纯钛的高温抗氧化性

摘要 一种新型 Ti-0.5Nb-0.5Si(重量百分比)合金在 650~850 °C 空气中氧化 100 h,表现出明显高于纯 Ti 的抗氧化性。随着温度的升高,合金的优势更加明显。在 850 °C 下 100 h,合金的质量增加仅占纯钛的 12.7%。一个关键原因是与 Ti 基体相结合的 Ti2N 层的形成。具有较少孔隙率和减轻分层的合金的氧化皮在氧化皮/基材界面处创造了有利于形成 Ti2N 的环境。
更新日期:2020-04-01
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