Densification behavior of Mo nanopowders prepared by mechanochemical processing

Gil Su Kim; Hai Gon Kim; Dae Gun Kim; Sung Tag Oh; Myung Jin Suk; Young Do Kim

doi:10.1016/j.jallcom.2008.01.149

Densification behavior of Mo nanopowders prepared by mechanochemical processing

Gil Su Kim, Hai Gon Kim, Dae Gun Kim, Sung Tag Oh, Myung Jin Suk, Young Do Kim

Dept. of Materials Science & Engineering

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

51 Scopus citations

Abstract

The sintering behavior of molybdenum (Mo) nanopowder was investigated in comparison to that of commercial Mo powder. At a sintering temperature of 1400 °C, the relative density of Mo nanopowder (94%) was found to be higher than that of commercial powder (74%). In samples of the same relative density, the measured hardness values were 2.34 GPa for nanopowder and 1.87 GPa for commercial powder. The sintered Mo nanopowder exhibited greater hardness compared with the commercial powders. The sintering mechanism and hardness are discussed based on the linear shrinkage behavior and observed microstructural characteristics.

Original language	English
Pages (from-to)	401-405
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	469
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.01.149
State	Published - 5 Feb 2009

Keywords

Hardness
High-energy ball milling
Nanopowder
Refractory metals
Sintering

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10.1016/j.jallcom.2008.01.149

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title = "Densification behavior of Mo nanopowders prepared by mechanochemical processing",

abstract = "The sintering behavior of molybdenum (Mo) nanopowder was investigated in comparison to that of commercial Mo powder. At a sintering temperature of 1400 °C, the relative density of Mo nanopowder (94\%) was found to be higher than that of commercial powder (74\%). In samples of the same relative density, the measured hardness values were 2.34 GPa for nanopowder and 1.87 GPa for commercial powder. The sintered Mo nanopowder exhibited greater hardness compared with the commercial powders. The sintering mechanism and hardness are discussed based on the linear shrinkage behavior and observed microstructural characteristics.",

keywords = "Hardness, High-energy ball milling, Nanopowder, Refractory metals, Sintering",

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AU - Kim, Gil Su

AU - Kim, Hai Gon

AU - Kim, Dae Gun

AU - Oh, Sung Tag

AU - Suk, Myung Jin

AU - Kim, Young Do

PY - 2009/2/5

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N2 - The sintering behavior of molybdenum (Mo) nanopowder was investigated in comparison to that of commercial Mo powder. At a sintering temperature of 1400 °C, the relative density of Mo nanopowder (94%) was found to be higher than that of commercial powder (74%). In samples of the same relative density, the measured hardness values were 2.34 GPa for nanopowder and 1.87 GPa for commercial powder. The sintered Mo nanopowder exhibited greater hardness compared with the commercial powders. The sintering mechanism and hardness are discussed based on the linear shrinkage behavior and observed microstructural characteristics.

AB - The sintering behavior of molybdenum (Mo) nanopowder was investigated in comparison to that of commercial Mo powder. At a sintering temperature of 1400 °C, the relative density of Mo nanopowder (94%) was found to be higher than that of commercial powder (74%). In samples of the same relative density, the measured hardness values were 2.34 GPa for nanopowder and 1.87 GPa for commercial powder. The sintered Mo nanopowder exhibited greater hardness compared with the commercial powders. The sintering mechanism and hardness are discussed based on the linear shrinkage behavior and observed microstructural characteristics.

KW - Hardness

KW - High-energy ball milling

KW - Nanopowder

KW - Refractory metals

KW - Sintering

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SN - 0925-8388

VL - 469

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EP - 405

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Densification behavior of Mo nanopowders prepared by mechanochemical processing

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Keywords

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