Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder

S. E. Shin, H. J. Choi, D. H. Bae

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A highly-dense aluminum (Al)/carbon nanotubes (CNTs) composite is produced via a two-step consolidation process for micro-alloying assisted sintering after hot pressing. First, Al-5. vol% CNTs powder is covered with zinc (Zn) flakes by mechanical milling. During high-pressure pressing at 500. °C, the Zn flakes melt along the Al/CNTs powder boundaries by capillary action, providing the initial densification. Further densification is accomplished by micro-alloying Zn and Al atoms during sintering at 450. °C. The composite with 4. vol% Zn shows ~98% relative density and ~520. MPa compressive strength after precipitation hardening.

Original languageEnglish
Pages (from-to)46-50
Number of pages5
JournalMaterials Science and Engineering A
Volume599
DOIs
Publication statusPublished - 2014 Apr 2

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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