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Improving the strengthening efficiency of carbon nanotubes in titanium metal matrix composites

机译:提高钛金属基复合材料中碳纳米管的增强效率

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摘要

Titanium (Ti) metal matrix composites (TMCs) reinforced with multi-walled carbon nanotubes (MWCNTs) were prepared by spark plasma sintering (SPS). Different concentrations (0.5 wt% and 1.0 wt%) of MWCNTs were dispersed into the Ti matrix by high energy ball milling (HEBM) and solution ball milling (SBM). The impact energy provided to the powder mixtures during the dispersion processing was quantified and optimized to disperse MWCNTs into Ti matrix. The effect of dispersion processing parameters on the sp~2 C-C network in MWCNTs, resultant microstructures and mechanical properties of TMCs was investigated. The interfacial reactions between MWCNTs and Ti matrix were controlled by retaining the crystallinity of MWCNTs during the processing stages of TMCs. The defects originated in MWCNTs during the synthesis of TMCs were quantified and their relationship was established with the strengthening efficiency of the MWCNTs in TMCs. The strengthening efficiency of MWCNTs in the composites consolidated from the powder mixtures with pre-sonicated MWCNTs were significantly enhanced as opposed to the composites consolidated from the powder mixtures prepared via solely HEBM process.
机译:通过火花等离子体烧结(SPS)制备了具有多壁碳纳米管(MWCNT)增强的钛(Ti)金属基复合材料(TMC)。通过高能球磨(HEBM)和溶液球磨(SBM)将不同浓度(0.5 wt%和1.0 wt%)的MWCNT分散到Ti基体中。量化和优化分散过程中提供给粉末混合物的冲击能,以将MWCNT分散到Ti基体中。研究了分散工艺参数对MWCNTs中sp〜2 C-C网络,TMCs微观结构和力学性能的影响。通过在加工过程中保持多壁碳纳米管的结晶度来控制多壁碳纳米管与钛基体之间的界面反应。量化了TMCs合成过程中源自MWCNTs的缺陷,并确定了它们与TMCs中MWCNTs强化效率的关系。与从仅通过HEBM工艺制备的粉末混合物固结的复合材料相反,由预超声处理的MWCNT从粉末混合物固结的复合材料中的MWCNT的增强效率显着提高。

著录项

  • 来源
    《Materials Science and Engineering》 |2017年第1期|10-25|共16页
  • 作者单位

    School of Engineering, RMTT University, Bundoora, Victoria 3083, Australia;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China;

    College of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China,Advanced Material Research and Development Center, Zhejiang Industry & Trade Vocational College, Wenzhou, Zhejiang 325003, China;

    School of Engineering, RMTT University, Bundoora, Victoria 3083, Australia;

    School of Engineering, RMTT University, Bundoora, Victoria 3083, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Carbon nanotubes; High energy ball milling; Spark plasma sintering; Titanium matrix composites; Raman spectroscopy;

    机译:碳纳米管;高能球磨;火花等离子体烧结;钛基复合材料;拉曼光谱;

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