Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder

S. E. Shin, H. J. Choi, DongHyun 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

Fingerprint

Carbon Nanotubes
consolidation
Aluminum
Alloying
Consolidation
Powders
alloying
Zinc
Carbon nanotubes
zinc
carbon nanotubes
aluminum
flakes
densification
Densification
sintering
Sintering
precipitation hardening
composite materials
Age hardening

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder",
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.",
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Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder. / Shin, S. E.; Choi, H. J.; Bae, DongHyun.

In: Materials Science and Engineering A, Vol. 599, 02.04.2014, p. 46-50.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Bae, DongHyun

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AB - 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.

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