Novel polytetrafluoroethylene (PTFE) composites with newly developed Tribaloy alloy additive for sliding bearings
Novel polytetrafluoroethylene (PTFE) composites with newly developed Tribaloy alloy additive for sliding bearings
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DOI：
10.1016/j.wear.2008.08.007
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发表时间：
2009-03
期刊：
影响因子：
5
通讯作者：
Alireza Khoddamzadeh;Rong Liu;Xijia Wu
中科院分区：
文献类型：
--
作者：
Alireza Khoddamzadeh;Rong Liu;Xijia Wu
一组新型聚四氟乙烯（PTFE）基复合材料的滑动轴承应用开发。增强材料包括新开发的T-401 Tribaloy合金，与传统的Tribaloy合金相比具有更好的延展性，球形青铜颗粒，短切碳纤维和研磨石墨。在不同的预成形和烧结周期下，用模压技术制备试样。研究了新型复合材料的力学性能、摩擦学性能和耐腐蚀性能。结果表明，这些性能的影响，填料的类型和填料的含量水平。所有研制的PTFE复合材料的耐磨性远远高于纯PTFE，具有很低的摩擦系数。在所开发的复合材料中，40%PTFE +15%T-401+45%青铜的混合物表现出最佳的性能组合。
A group of novel polytetrafluoroethylene (PTFE)-based composite materials are developed for sliding bearing applications. The reinforcements include the newly developed T-401 Tribaloy alloy, which possesses better ductility compared to conventional Tribaloy alloys, spherical bronze particles, chopped carbon fibers and milled graphite. The specimens are fabricated with the compression moulding technique under different preforming and sintering cycles. The mechanical and tribological properties as well as corrosion resistance of the new composites are investigated. It is demonstrated that these properties are influenced by the type of fillers and the content level of fillers. The wear resistances of all the developed PTFE composites are much higher than that of pure PTFE with very low coefficients of friction. Among the developed composites, the mixture of 40% PTFE+15% T-401+45% bronze exhibits the best combination of properties.