Articles
  • Sintering behavior and properties of Mo-Cu composites produced by spark plasma sintering

  • Yu-gyun Parka,b, Min-hyeok Yanga,b, Yeong-jung Kima,b and Hyun-kuk Parka,*

  • aPurpose-based Mobility Group, Korea Institute of Industrial technology, Gwangju 61012, Republic of Korea
    bDivision of Advanced Materials Engineering, Chonnam National University, Gwangju 61186, Republic of Korea

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The Mo-Cu composites containing 10-40 wt.% Cu were fabricated by subjecting Mo and Cu powders to high energy ball milling for 15 hrs at 200 rpm, followed by spark plasma sintering at 950 °C under 60 MPa. The synthesized powders were sintered using SPS, resulting in a gradual increase in relative density from 82.8% for Mo-10Cu to 90.1% for Mo-40Cu with increasing Cu content. X-ray diffraction confirmed that only Mo and Cu phases were present in all sintered samples. Microstructural analysis revealed a transition from isolated Cu regions in a Mo matrix at low Cu content to a continuous Cu matrix with dispersed Mo particles at high Cu content. The thermal conductivity of the composites increased from 122.8 to 158.8 W/m·K as the Cu content increased, while the Vickers hardness decreased from 591.2 to 395.2 Hv due to the increase in the volume fraction of Cu, which has a lower hardness compared to Mo.


Keywords: Mo-Cu, High energy ball milling, Spark plasma sintering, Mechanical property, Thermal property.

This Article

  • 2025; 26(6): 909-915

    Published on Dec 31, 2025

  • 10.36410/jcpr.2025.26.6.909
  • Received on Aug 21, 2025
  • Revised on Oct 10, 2025
  • Accepted on Oct 28, 2025

Correspondence to

  • Hyun-kuk Park

  • Purpose-based Mobility Group, Korea Institute of Industrial technology, Gwangju 61012, Republic of Korea
    Tel : +82-62-600-6270 Fax: +82-62-600-6149

  • E-mail: hk-park@kitech.re.kr