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利用电化学测试、扫描电镜观察及能谱分析等方法,研究了AlCoCrFeNiCu高熵合金在不同介质中的电化学腐蚀行为。结果表明,在3.5%NaCl和30%H2O2溶液中,1Cr18Ni9Ti不锈钢与AlCoCrFeNiCu高熵合金相比,具有较正的自腐蚀电位,较小的腐蚀电流密度,AlCoCrFeNiCu高熵合金的腐蚀以点蚀和局部腐蚀为主;在1 mol/L H2SO4溶液中,AlCoCrFeNiCu高熵合金的腐蚀电流密度较1Cr18Ni9Ti不锈钢小,耐腐蚀性能更好。
The electrochemical corrosion behavior of AlCoCrFeNiCu high entropy alloys in different media was studied by means of electrochemical tests, scanning electron microscopy and energy spectrum analysis. The results show that the corrosion resistance of 1Cr18Ni9Ti stainless steels is higher than that of AlCoCrFeNiCu high entropy alloys in 3.5% NaCl and 30% H2O2 solutions, and the corrosion current density of AlCoCrFeNiCu high entropy alloys is pitting corrosion and local The corrosion current density of AlCoCrFeNiCu high-entropy alloy is smaller than that of 1Cr18Ni9Ti stainless steel in 1 mol / L H2SO4 solution and the corrosion resistance is better.