Electrochemical behaviour of graphene and alumina whisker co-reinforced copper matrix composites

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Engineering, Science and Technology Pub Date : 2022-12-07 DOI:10.1080/1478422X.2022.2152771

Z. Shao, Xubo Li, Yanhong Wei, Jianrun Chen, Qing Qin, Yong Xian, Yichao Ding

{"title":"Electrochemical behaviour of graphene and alumina whisker co-reinforced copper matrix composites","authors":"Z. Shao, Xubo Li, Yanhong Wei, Jianrun Chen, Qing Qin, Yong Xian, Yichao Ding","doi":"10.1080/1478422X.2022.2152771","DOIUrl":null,"url":null,"abstract":"ABSTRACT\n This study prepared copper (Cu) matrix composites with different graphene contents (0∼1.0 wt-%) and an equal amount of alumina (Al2O3) whisker by vacuum hot pressing sintering. The microstructures of the Cu/C and Cu/Al2O3 interfaces were characterised. The electrochemical corrosion behaviour of the composites was evaluated to study the influence of graphene content on the corrosion performance of the Cu matrix composites. The results showed that incorporating uniformly dispersed graphene with a small amount (∼0.25 wt-%) enables close integration with the Cu matrix, slows down the corrosion rate, and increases the impedance of the composites, thus effectively improving the corrosion resistance of Cu matrix composites. With an increase in graphene content (∼1.0 wt-%), defects tend to generate, leading to the formation of multiple corrosive microcell cavities in the composite, thus accelerating the corrosion of the composite. The Gr/Cu-0.25 composite exhibited better corrosion resistance in acidic, neutral, and alkaline corrosive solutions.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"145 - 155"},"PeriodicalIF":1.5000,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Engineering, Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/1478422X.2022.2152771","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

ABSTRACT This study prepared copper (Cu) matrix composites with different graphene contents (0∼1.0 wt-%) and an equal amount of alumina (Al2O3) whisker by vacuum hot pressing sintering. The microstructures of the Cu/C and Cu/Al2O3 interfaces were characterised. The electrochemical corrosion behaviour of the composites was evaluated to study the influence of graphene content on the corrosion performance of the Cu matrix composites. The results showed that incorporating uniformly dispersed graphene with a small amount (∼0.25 wt-%) enables close integration with the Cu matrix, slows down the corrosion rate, and increases the impedance of the composites, thus effectively improving the corrosion resistance of Cu matrix composites. With an increase in graphene content (∼1.0 wt-%), defects tend to generate, leading to the formation of multiple corrosive microcell cavities in the composite, thus accelerating the corrosion of the composite. The Gr/Cu-0.25 composite exhibited better corrosion resistance in acidic, neutral, and alkaline corrosive solutions.

查看原文本刊更多论文

石墨烯与氧化铝晶须共增强铜基复合材料的电化学行为

摘要本研究通过真空热压烧结制备了不同石墨烯含量（0～1.0wt%）和等量氧化铝（Al2O3）晶须的铜基复合材料。对Cu/C和Cu/Al2O3界面的微观结构进行了表征。评价了复合材料的电化学腐蚀行为，研究了石墨烯含量对铜基复合材料腐蚀性能的影响。结果表明，加入少量（～0.25wt%）均匀分散的石墨烯，可以与Cu基体紧密结合，减缓腐蚀速率，增加复合材料的阻抗，从而有效提高Cu基体复合材料的耐腐蚀性。随着石墨烯含量的增加（~1.0wt%），往往会产生缺陷，导致复合材料中形成多个腐蚀性微孔腔，从而加速复合材料的腐蚀。Gr/Cu-0.25复合材料在酸性、中性和碱性腐蚀溶液中表现出更好的耐腐蚀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Corrosion Engineering, Science and Technology 工程技术-材料科学：综合

CiteScore

3.20

自引率

5.60%

发文量

审稿时长

3.4 months

期刊介绍： Corrosion Engineering, Science and Technology provides broad international coverage of research and practice in corrosion processes and corrosion control. Peer-reviewed contributions address all aspects of corrosion engineering and corrosion science; there is strong emphasis on effective design and materials selection to combat corrosion and the journal carries failure case studies to further knowledge in these areas.