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kevinhan1: 金币+10, ★★★★★最佳答案 2015-12-11 10:10:14
由上可以得出 高硅铝合金的 摩擦机制 是在 软的铝基体上 分布着 大量 细小高硬度的 第二相质点 的 理想 摩擦材料，在摩擦磨损过程中 软基体 被磨损后 产生凹坑 起到 储油的作用，而突出的 硬质点 起到 支撑和耐磨 作用；
It can be seen that high-silicon aluminum alloy is the ideal friction materials, of which, the frictional mechanism is due to large amounts of small and high-hardness second phase particles distributed on soft aluminium matrix. During friction and wear process, soft aluminium matrix is gradually worn out, producing pit which is used for oil storage and outstanding hard particles which are of supporting and wear-resisting effect;
高硅铝合金中 硬质点 数目越多 越细小 且分 布越均匀，合金的 耐磨性能越好。而铸铁的 摩擦机制 是在 硬的基体 上分布 着 软的石墨，在摩擦过程中 软的石墨 磨损后 起到 储油和润滑 作用，同时 硬的基体 起 支撑和耐磨作用。
In high-silicon aluminum alloy, if the hard particles are more in quantity, smaller in size, and more homogeneous in distribution, the wear-resisting property of alloy will be better. However, the friction mechanism of cast iron is due to the soft graphite distributed on hard matrix, the wore soft graphite plays a role for oil storage and lubrication, while the hard matrix is of supporting and wear-resisting effect. |
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