Stability Research of Ultrafine Powders Lubricant
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摘要: 為解決超細金屬粉固體潤滑劑的穩定性問題,分析了單個粉末顆粒和超細金屬粉末在液體中實現穩定分散和懸浮的條件.結果表明,表面未包覆的粉末在液相中很難穩定存在,而表面包覆的超細金屬粉末由于粉末表面吸附層產生的空間位阻效應,且在吸附層厚度大于4.2nm時,超細金屬粉末才能在潤滑油中實現穩定的懸浮.Abstract: For the resolution of stability of ultrafine powders lubricant, the essential condition by which single particle and untrafine metal powders can disperse and suspend in liquld phases was analyzed. There result pointed out just because of the surface coating and the space-resistive effect, and only the thickness of surface-coating is larger than 4.2 nm, the stable suspending of ultrafine powders in oil can be realized.
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Key words:
- ultrafine powders /
- suspension /
- stability /
- lubricant
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