Study of structure and properties of dual-size grain copper matrix composites prepared by NbC and rare earth element La

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Bulletin of Materials Science Pub Date : 2024-10-23 DOI:10.1007/s12034-024-03332-y

Ming Wen, Jingwei Li, Zengwu Zhao

引用次数: 0

Abstract

Copper matrix composites with NbC content of 1 wt.% and La content of 0.02 wt.%, 0.04 wt.%, 0.06 wt.%, and 0.08 wt.% were prepared by high-energy ball milling and spark plasma sintering using rare earth element La, ceramic particle NbC, and electrolytic copper powder as raw materials. The effects of different La content on the properties of NbC-Cu composites were discussed by observing the microstructure of La-NbC-Cu composites and testing the hardness and conductivity. When the content of La is 0.06 wt.%, the La-NbC-Cu composite has a hardness of 62 HV and a good conductivity of 76.5% IACS. At this time, the internal stress of the material is reduced and ultrafine grains appear. Then, with the increase of La element, when the content of La is 0.08 wt.%, the hardness of copper matrix composites decreases due to the enrichment of La atoms on the surface of the reinforced phase.

查看原文本刊更多论文

用 NbC 和稀土元素 La 制备的双尺寸晶粒铜基复合材料的结构和性能研究

以稀土元素 La、陶瓷颗粒 NbC 和电解铜粉为原料，通过高能球磨和火花等离子烧结制备了 NbC 含量为 1 wt.%、La 含量为 0.02 wt.%、0.04 wt.%、0.06 wt.% 和 0.08 wt.% 的铜基复合材料。通过观察 La-NbC-Cu 复合材料的微观结构并测试其硬度和导电性，讨论了不同 La 含量对 NbC-Cu 复合材料性能的影响。当 La 含量为 0.06 wt.% 时，La-NbC-Cu 复合材料的硬度为 62 HV，导电率为 76.5% IACS，导电性能良好。此时，材料的内应力降低，并出现超细晶粒。然后，随着 La 元素含量的增加，当 La 含量为 0.08 wt.%时，由于 La 原子在增强相表面的富集，铜基复合材料的硬度降低。

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

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.