Cu-0.9Be-1.5Ni-0.04Y合金的摩擦磨损与电化学腐蚀性能研究  

Study on Frictional Wear and Electrochemical Corrosion Properties of Cu-0.9Be-1.5Ni-0.04Y Alloys

作　　者：黄晗冰 王培 乔石 马如龙 郝振华 舒永春 何季麟 HUANG Hanbing;WANG Pei;QIAO Shi;MA Rulong;HAO Zhenhua;SHU Yongchun;HE Jilin(School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;Zhongyuan Critical Metals Laboratory,Zhengzhou 450001,China;School of Material Science and Engineering,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]郑州大学材料科学与工程学院,郑州450001 [2]中原关键金属实验室,郑州450001 [3]河南工业大学材料科学与工程学院,郑州450001

出　　处：《材料导报》2025年第7期164-171,共8页Materials Reports

基　　金：河南省重大专项(GJJSGFZD202303)。

摘　　要：铍铜合金具有高强度、高硬度以及优异的耐腐蚀、耐磨损性能,在航空航天、电子通信等领域有着广泛的应用。近年来,研究发现添加稀土元素有助于改善铍铜合金的性能,但稀土元素Y对铍铜合金摩擦磨损以及电化学腐蚀的影响鲜有研究。本工作采用真空熔炼的方法制备了Cu-0.9Be-1.5Ni-0.04Y合金,研究了稀土元素Y的添加对Cu-0.9Be-1.5Ni合金物相组成、显微结构、摩擦磨损和电化学腐蚀的影响。结果表明添加稀土元素Y后,Cu-0.9Be-1.5Ni合金晶粒得到明显细化,耐磨性在不同载荷和频率条件下显著提高。此外,Y的添加使合金在电化学腐蚀过程中形成更加致密的氧化膜,同时降低晶粒和晶界的化学活性,合金的自腐蚀电流从7.26×10^(-6)A/cm^(2)降为6.35×10^(-6)A/cm^(2),电极反应和腐蚀速率降低,耐腐蚀性能提高。The beryllium-copper alloys,with exceptional strength,hardness,corrosion resistance,and wear properties,are extensively utilized in the aerospace,electronics,and communications industries.The incorporation of rare earth elements has been found to enhance the properties of copper alloys in recent years.However,the effect of rare earth element Y on the friction and wear of beryllium copper alloys as well as electrochemical corrosion has rarely been studied.In this work,Cu-0.9Be-1.5Ni-0.04Y alloys were prepared by vacuum melting,and the effects of the addition of Y on the phase composition,microstructure,frictional wear and electrochemical corrosion of Cu-0.9Be-1.5Ni alloys were investigated.The results show that the addition of rare earth element Y has significantly refined the grain of Cu-0.9Be-1.5Ni alloy,and the wear resistance has been improved under different load and frequency conditions.In addition,the addition of Y makes the alloy form a dense oxide film in the electrochemical corrosion process,at the same time reduces the chemical activity of the grains and grain boundaries.Its self-corrosion current decreases from 7.26×10^(-6) A/cm^(2) to 6.35×10^(-6) A/cm^(2),the electrode reaction and corrosion rate of the alloy decreases,which indicates that the alloy's corrosion resistance improves.

关 键 词：摩擦磨损 电化学腐蚀 钇 铍铜合金 

分 类 号：TG146.1[一般工业技术—材料科学与工程]