(1. 河南科技大學 材料科學與工程學院，洛陽 471003；
2. 河南省有色金屬材料科學與加工技術重點實驗室，洛陽 471039)
摘 要: 采用真空感應熔煉爐制備Cu-Ag、Cu-Ag-Zr以及Cu-Ag-Zr-Ce合金，利用自制且能模擬接觸線實際運行工況的載流磨損試驗機對各不同合金線材的電滑動磨損性能進行研究，并借助掃描電鏡對磨損前后Cu-Ag-Zr-Ce合金的組織形貌進行分析。結(jié)果表明：Cu-Ag-Zr-Ce線材的磨損率隨著加載電流和滑行距離的增大而增大；粘著磨損、磨粒磨損和電侵蝕磨損是Cu-Ag-Zr-Ce線材電滑動磨損的主要機制。在同種實驗條件下，Cu-Ag-Zr-Ce線材的耐磨性能優(yōu)于Cu-Ag-Zr和Cu-Ag合金的耐磨性能，相同實驗條件下Cu-Ag 合金的磨損率為Cu-Ag-Zr-Ce和Cu-Ag-Zr合金磨損率的2~ 4倍。
關鍵字: Cu-Ag-Zr-Ce合金；電滑動磨損；接觸線；接觸滑板
（1. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China;
2. Henan Key Laboratory of Advanced Nonferrous Metals, Luoyang 471039, China）
Abstract:Cu-Ag, Cu-Ag-Zr and Cu-Ag-Zr-Ce alloys were produced by using a vacuum induction furnace. The electrical sliding wear properties of different alloys wires were studied by a self-made sliding wear tester that can simulate the tribological conditions of sliding current collectors on contact wires. The morphologies of Cu-Ag-Zr-Ce alloy before and after wear were analyzed by scanning electron microscope. The results show that the wear rate of the Cu-Ag-Zr-Ce alloy increases with increasing electrical current and sliding distance. The adhesive wear, abrasive wear and electrical erosion are the dominant mechanisms of the Cu-Ag-Zr-Ce alloy during the electrical sliding processes. Compared with Cu-Ag and Cu-Ag-Zr alloys under the same test condition, Cu-Ag-Zr-Ce alloy has much better wear resistance. The wear rate of the Cu-Ag alloy is 2−4 times as large as that of Cu-Ag-Zr and Cu-Ag-Zr-Ce alloys.
Key words: Cu-Ag-Zr-Ce alloy; electrical sliding wear; contact wire; contact strip
