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Effect of Silver Element on Microstructure and Properties of W-30Cu/TiC Composites

  • Xiaoli Chen (陈小丽)
  • Laima Luo (罗来马)Email author
  • Zan Xiang
  • Xiaoyong Zhu
  • Yucheng Wu (吴玉程)Email author
Metallic Materials
  • 5 Downloads

Abstract

W-30wt%Cu and TiC-50wt%Ag were successfully synthesized by a novel simplified pretreatment followed by electroless plating. The 0wt% TiC, 0.5wt% TiC, and 0.5wt%TiC-0.5wt%Ag composite powders were added to W-30wt%Cu composite powders by blending, and then reduced. The reduced W-30Cu, W-30Cu/0.5TiC, and W-30Cu-0.5Ag/0.5TiC composite powders were then compacted and sintered at 1 300 °C in protective hydrogen for 60 min. The phase and morphology of the composite powders and materials were analyzed using X-ray diffraction and field emission scanning electron microscopy. The relative density, electrical conductivity, and hardness of the sintered samples were examined. Results showed that W-30Cu and TiC-Ag composite powders with uniform structure were obtained using simplified pretreatment followed by electroless plating. The addition of TiC particles can significantly increase the compressive strength and hardness of the W-30Cu composite material but decrease the electrical conductivity. Next, 0.5wt% Ag was added to prepare W-30Cu-0.5Ag/TiC composites with excellent electrical conductivity. The electrical conductivity of these composites (61.2%) is higher than that in the national standard (the imaginary line denotes electrical conductivity of GB IACS 42%) of 45.7%.

Key words

electroless plating silver element W-30Cu-0.5Ag/TiC composites electrical conductivity 

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Copyright information

© Wuhan University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xiaoli Chen (陈小丽)
    • 1
  • Laima Luo (罗来马)
    • 1
    • 2
    Email author
  • Zan Xiang
    • 1
    • 2
  • Xiaoyong Zhu
    • 1
    • 2
  • Yucheng Wu (吴玉程)
    • 1
    • 2
    Email author
  1. 1.School of Materials Science and EngineeringHefei University of TechnologyHefeiChina
  2. 2.Laboratory of Nonferrous Metal Material and Processing Engineering of Anhui ProvinceHefeiChina

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