Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder

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

doi:10.1016/j.msea.2014.01.073

Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 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 language	English
Pages (from-to)	46-50
Number of pages	5
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	599
DOIs	https://doi.org/10.1016/j.msea.2014.01.073
Publication status	Published - 2014 Apr 2

Bibliographical note

Funding Information:
This research was supported by the Korea Science and Engineering Foundation Grant (No. 2012R1A1A2042329 ). H.J. Choi acknowledges the support by Basic Science Research Program ( 2009-0093814 and 2013R1A1A3005759 ) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education .

All Science Journal Classification (ASJC) codes

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

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10.1016/j.msea.2014.01.073

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.",

author = "Shin, {S. E.} and Choi, {H. J.} and Bae, {D. H.}",

note = "Funding Information: This research was supported by the Korea Science and Engineering Foundation Grant (No. 2012R1A1A2042329 ). H.J. Choi acknowledges the support by Basic Science Research Program ( 2009-0093814 and 2013R1A1A3005759 ) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education .",

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AU - Shin, S. E.

AU - Choi, H. J.

AU - Bae, D. H.

N1 - Funding Information: This research was supported by the Korea Science and Engineering Foundation Grant (No. 2012R1A1A2042329 ). H.J. Choi acknowledges the support by Basic Science Research Program ( 2009-0093814 and 2013R1A1A3005759 ) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education .

PY - 2014/4/2

Y1 - 2014/4/2

N2 - 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.

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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Micro-alloying assisted consolidation of aluminum/carbon nanotubes powder

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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