Synergistic Effect of Graphite and Fly Ash on the Microstructural Evolution and Tribological Characteristics of Fe-Cu-Based Wind Turbine-Sintered Brake Pad Materials

K. Rajesh Kannan, R. Vaira Vignesh, M. Govindaraju, T. Ram Prabhu, Abd Baghad
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Abstract

The research focused on the effect of graphite proportion and the incorporation of fly ash in Fe-Cu-based friction materials produced via powder metallurgy technique. Microstructural investigation of the specimens demonstrated the homogenous distribution of the secondary element (Cu), lubricant (graphite), and reinforcements (fly ash) in the matrix (Fe). A maximum density of 5.7 g/cm3 was attained for the specimens, with an overall density of 70 pct of theoretical density. FM03 specimens showed a better wear resistance of 4.7 × 10−8 g/Nm with an optimum coefficient of friction of 0.4. The specific wear rate of the conventional friction material was 97.7 pct higher than the FM03 specimens.

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石墨和粉煤灰对铁铜基风力涡轮机烧结刹车片材料微结构演变和摩擦学特性的协同效应
研究重点是通过粉末冶金技术生产的铁铜基摩擦材料中石墨比例和粉煤灰加入量的影响。试样的微观结构研究表明,次要元素(铜)、润滑剂(石墨)和增强剂(粉煤灰)在基体(铁)中分布均匀。试样的最大密度为 5.7 克/立方厘米,总体密度为理论密度的 70%。FM03 试样的耐磨性更好,达到 4.7 × 10-8 g/Nm,最佳摩擦系数为 0.4。传统摩擦材料的比磨损率比 FM03 试样高 97.7%。
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