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我们制备了含钼15％～20％、含硫3％的铁基三元合金,並将其作为一种自润滑材料,在栓-盘式试验机上进行了检验,评价了它们在低真空中的摩擦磨损性能。实验的滑动速度在0.1～0.9米/秒的范围内。 我们发现,在这种合金的基体中,生成了一种原子比不定的钼的硫化物—MoSx(x≈1.8),其结构类似于MoS_2。这种合金的摩擦性能要受到周围气压的影响,它在空气中滑动摩擦时,界面上会发生氧化,生成α-Fe_2O_3,使摩擦系数增大到0.7。但是,在气压低于10~3帕的真空中(1帕=1牛顿/米~2—译者),该合金却呈现出良好的润滑性,其摩擦系数之低可与MoS_2相比。在实验所用的各种气压条件下,该合金的磨损率都明显地小于S45℃碳钢(AISI1045)。
We prepared an iron-based ternary alloy containing 15% to 20% molybdenum and 3% sulfur, and tested it as a self-lubricating material on a plug-and-reel tester to evaluate their performance in a low vacuum The friction and wear properties. Experimental sliding speed in the range of 0.1 ~ 0.9 m / s. We found that in the matrix of this alloy, a molybdenum sulfide with an atomic ratio of -MoSx (x≈1.8) was formed, which was similar in structure to MoS_2. The frictional properties of this alloy are subject to the influence of ambient pressure. When sliding in the air, it will oxidize at the interface and produce α-Fe_2O_3, which increases the friction coefficient to 0.7. However, at pressures below 10-3 Pa (1 Pa = 1 N / m 2-translator), the alloy exhibited good lubricity with a lower coefficient of friction than MoS 2. The wear rate of this alloy was significantly lower than that of S45 ° C carbon steel (AISI1045) under various atmospheric conditions used in the experiments.