含Cr铜基粉末冶金摩擦材料的磨损图研究  

Wear Map of Cu-based Powder Metallurgy Friction Materials using Cr as a Friction Component

作　　者：王奇[1] 姚萍屏[1] 周海滨[1] 贡太敏[1] 樊坤阳[1] 凌攀[1] 李昆[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《摩擦学学报》2017年第3期364-371,共8页Tribology

基　　金：国家自然科学基金项目(51175516和51475476);粉末冶金国家重点实验室项目(621020006)资助~~

摘　　要：利用粉末冶金技术制备出铜基粉末冶金摩擦材料,研究在干摩擦条件下,制动能量和摩擦组元Cr含量变化对铜基粉末冶金摩擦材料摩擦磨损性能及磨损图的影响.根据线磨损量的变化,构建出以制动能量和摩擦组元Cr含量为变量的线磨损量图,主要包含三个区域:低磨损区、中磨损区和高磨损区,并建立出各区域边界转变方程;结合磨损表面、亚表面以及磨屑形貌的观察与分析,确定线磨损量图中各区域的主导磨损机理,由此建立出对应线磨损量图的磨损机理图,即犁削和轻微氧化磨损(低磨损区);严重氧化磨损和犁削(中磨损区);剥层磨损(高磨损区).希望该磨损图为含Cr铜基粉末冶金摩擦材料的实际应用提供一定的理论参考.The copper based powder metallurgy friction material was prepared by powder metallurgy technology. The influences of friction component Cr and braking energy on friction and wear properties and wear mechanism map of copper-based powder metallurgy friction material under dry friction condition were studied. According to the variation of liner wear, the liner wear map was constructed based on the braking energy and the addition of Cr, which included three wear regions, namely, the low wear area, the medium wear area and the high wear area. The transformation equations of the boundaries of each region were also established. In addition, according to the analysis of the worn surface, subsurface, and wear debris, the main wear mechanisms of each region were determined, i.e. ploughing and mild oxidation wear for the low wear region, severe oxidation wear and ploughing for the medium wear region, delamination wear for the high wear region. The wear mechanism map provided useful guide for the practical application of copper-based powder metallurgy friction material.

关 键 词：磨损机理图 铜基摩擦材料 CR 摩擦磨损 粉末冶金 

分 类 号：TF125.9[冶金工程—粉末冶金]