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本文基于元胞自动机方法对镍-铬合金在高温的含硫腐蚀性气氛中的氧化腐蚀行为进行模拟。模型中的重要变量包括反应概率、反应时间以及腐蚀层厚度。模拟结果表明,元胞自动机方法可以模拟出金属在氧化-硫化复杂化学反应体系,腐蚀层厚度符合Wagner抛物线理论。另外,研究了不同参数对镍-铬二元合金腐蚀的影响,结果表明,相同反应概率下,Cr浓度升高,反应物厚度减小,体现了铬的腐蚀防护性。
In this paper, the oxidation behavior of nickel-chromium alloy in high temperature sulfur-containing corrosive atmosphere was simulated based on the cellular automata method. Important variables in the model include reaction probability, reaction time, and erosion thickness. The simulation results show that the cellular automata method can simulate the complex oxidation reaction of the metal in the chemical reaction system, and the thickness of the corrosion layer conforms to the Wagner parabola theory. In addition, the influence of different parameters on the corrosion of nickel-chromium binary alloys was studied. The results show that under the same reaction probability, the concentration of Cr increases and the thickness of reactants decreases, which reflects the corrosion protection of chromium.