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kevinhan1: 金幣+10, ★★★★★最佳答案 2015-12-11 10:10:14
由上可以得出 高硅鋁合金的 摩擦機制 是在 軟的鋁基體上 分布著 大量 細(xì)小高硬度的 第二相質(zhì)點 的 理想 摩擦材料，在摩擦磨損過程中 軟基體 被磨損后 產(chǎn)生凹坑 起到 儲油的作用，而突出的 硬質(zhì)點 起到 支撐和耐磨 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;
高硅鋁合金中 硬質(zhì)點 數(shù)目越多 越細(xì)小 且分 布越均勻，合金的 耐磨性能越好。而鑄鐵的 摩擦機制 是在 硬的基體 上分布 著 軟的石墨，在摩擦過程中 軟的石墨 磨損后 起到 儲油和潤滑 作用，同時 硬的基體 起 支撐和耐磨作用。
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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