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<p>Due to a subversive shift in the composition of the high-entropy alloy, it breaks through the framework that has been mainly dependent on a single or dual alloy design, thereby demonstrating superior corrosion resistance. The effect of Ti composition on the corrosion resistance of AlCrCuFe<sub>2</sub>NiTi<sub><i>x</i></sub>(<i>x</i> = 0, 0.5, 1.0) high-entropy surfacing alloy was studied. In this paper, AlCrCuFe<sub>2</sub>NiTi<sub><i>x</i></sub> high-entropy surfacing alloy was prepared by molten electrode gas shield welding process. The microstructure morphology and phase composition of AlCrCuFe<sub>2</sub>NiTi<sub><i>x</i></sub> series high-entropy alloy were studied by means of XRD, SEM, and other equipment. Effect of adding different contents of Ti elements on corrosion resistance of high-entropy alloy. The corrosion behavior of AlCrCuFe<sub>2</sub>NiTi<sub><i>x</i></sub> high-entropy alloy in 40&#xa0;wt.%KNO<sub>3</sub> + 60&#xa0;wt.%NaNO<sub>3</sub> molten salt for 100&#xa0;h shows that: The corrosion weight loss curve shows that the corrosion weight loss is first rapid and then slow down. In the corrosion process, it can be found that the corrosion resistance of Ti<sub>0.5</sub> alloy is the best. The Ti element in the alloy is conducive to the preferential production of the Al<sub>2</sub>O<sub>3</sub> protective film, and excessive Ti will increase the growth stress of the oxide film.</p>

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Corrosion Resistance Analysis of AlCrCuFe2NiTix High-Entropy Alloy Deposited Metal in NO32− Root Molten Salt

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Guiqing Zhang,
  • Cunzhen Xing,
  • Jihou Qiang,
  • Xiaoqi Kang,
  • Yunhai Su

摘要

Due to a subversive shift in the composition of the high-entropy alloy, it breaks through the framework that has been mainly dependent on a single or dual alloy design, thereby demonstrating superior corrosion resistance. The effect of Ti composition on the corrosion resistance of AlCrCuFe2NiTix(x = 0, 0.5, 1.0) high-entropy surfacing alloy was studied. In this paper, AlCrCuFe2NiTix high-entropy surfacing alloy was prepared by molten electrode gas shield welding process. The microstructure morphology and phase composition of AlCrCuFe2NiTix series high-entropy alloy were studied by means of XRD, SEM, and other equipment. Effect of adding different contents of Ti elements on corrosion resistance of high-entropy alloy. The corrosion behavior of AlCrCuFe2NiTix high-entropy alloy in 40 wt.%KNO3 + 60 wt.%NaNO3 molten salt for 100 h shows that: The corrosion weight loss curve shows that the corrosion weight loss is first rapid and then slow down. In the corrosion process, it can be found that the corrosion resistance of Ti0.5 alloy is the best. The Ti element in the alloy is conducive to the preferential production of the Al2O3 protective film, and excessive Ti will increase the growth stress of the oxide film.