Gas Release Behavior of Cu-TiH{sub 2} Composite Powder and Its Application as a Blowing Agent to Fabricate Aluminum Foams with Low Porosity and Small Pore Size

Journal Article · Fri Jun 15 04:00:00 EDT 2018 · Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science

DOI:https://doi.org/10.1007/S11663-018-1240-9· OSTI ID:22857937

Cheng, Ying; Li, Yanxiang; Chen, Xiang; Liu, Zhiyong; Zhou, Xu; Wang, Ningzhen ^[1]

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1. Tsinghua University, School of Materials Science and Engineering (China)

Compared to traditional pore structure with high porosity (≥ 80 pct) and large pore size (≥ 3 mm), aluminum foams with low porosity (60 to 70 pct) and small pore size (≤ 2 mm) possess higher compressive property and formability. In order to achieve the goal of reducing pore size, Cu-TiH{sub 2} composite powder prepared by ball milling preoxidized TiH{sub 2} with Cu powder was used as a blowing agent. Its gas release behavior was characterized by thermogravimetric analysis and differential scanning calorimetry. The results show that the ball milling treatment can advance the gas release process and slow the gas release rate at the same time. All these changes are favorable to the reduction of porosity and pore size. Such Cu-TiH{sub 2} composite powder provides an alternative way to fabricate aluminum foams with low porosity and small pore size.

• OSTI ID: 22857937
• Journal Information: Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science, Journal Name: Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science Journal Issue: 3 Vol. 49; ISSN 1073-5615; ISSN MTBSEO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
CALORIMETRY
COPPER
FOAMS
MILLING
PORE STRUCTURE
POROSITY
POWDERS
THERMAL GRAVIMETRIC ANALYSIS
TITANIUM HYDRIDES