Enhancement of Microstructural Homogeneity of W-Cu Pseudo-Alloy by Adding W-Cu Composite Powder in Infiltration Process

Moon Hee Hong; Jae Ho Choi; Seong Lee; Eun Pyo Kim; Joon Woong Noh; Sung Ho Lee; Young Moo Kim

doi:10.4028/www.scientific.net/MSF.534-536.1257

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HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Enhancement of Microstructural Homogeneity of W-Cu...

Enhancement of Microstructural Homogeneity of W-Cu Pseudo-Alloy by Adding W-Cu Composite Powder in Infiltration Process

Abstract:

An infiltration technique using W-Cu composite powder has been developed to enhance microstructural uniformity of W-Cu pseudo-alloy. W-Cu composite powder, manufactured by reduction from WO3 and CuO powder mixtures, were blended with W powder and then cold isostatically pressed into a cylindrical bar under 150 MPa. The pressed samples were pre-sintered at 1300 oC for 1 hour under hydrogen to make a skeleton structure. This skeleton structure was more homogeneous than that formed by using W and Cu powder mixtures. The skeleton structures were infiltrated with Cu under hydrogen atmosphere. The infiltrated W-Cu pseudo-alloy showed homogeneous microstructure without Cu rich region.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

1257-1260

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.1257

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Online since:

January 2007

Authors:

Moon Hee Hong, Jae Ho Choi, Seong Lee, Eun Pyo Kim, Joon Woong Noh, Sung Ho Lee, Young Moo Kim

Keywords:

Infiltration, W-cu Composite Powder, W-Cu Pseudo-Alloy

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