• Title/Summary/Keyword: Cu powder

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Fabrication of W-10wt.%Cu Powder for the Application of Metal Injection Molding (금속사출성형을 위한 W-10wt.%Cu 분말의 제조에 관한 연구)

  • 김순욱;손찬현;김영도;문인형
    • Journal of Powder Materials
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    • v.8 no.4
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    • pp.245-252
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    • 2001

  • Recent remarkable progress in the semiconductor industry has promoted smaller size of semiconductor chips and increased amounts of heat generation. So, the demand for a substrate material to meet both the characteristics of thermal expansion coefficient and heat radiation has been on the increase. Under such conditions, tungsten(W)-copper(Cu) has been proposed as materials to meet both of the above characteristics. In the present study, the W-10wt.%Cu powders were synthesised by the mixing and hydrogen reduction of the starting mixture materials such as W-Cu, $W-CuCl_2$and $WO_3-CuCl_2$ in order to obtain the full densification. The W-10wt.%Cu produced by hydrogen reduction showed the higher interparticle friction than the simple mixed W-10wt%Cu because of the W agglomerates. In the dilatometric analysis the W-10wt.%Cu prepared from the $W-CuCl_2$was largely shrank by heating up $1400^{\circ}C$ at the constant heating rate of $5^{\circ}C$/min. The possibility of application of metal injection molding (MIM) was also investigated for mass production of the complex shaped W-Cu parts in semiconductor devices. The relationship between the temperature of molding die and the pressure of injection molding was analyzed and the heating up stage of 120-$290^{\circ}C$ in the debinding process was controlled for the most suitable MIM condition.

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Production of Fe Amorphous Powders by Gas-Atomization Process and Subsequent Spark Plasma Sintering of Fe amorphous-ductile Cu Composite Powder Produced by Ball-milling Process (II) - II. SPS Behaviors of Composite Powders and their Characteristics - (가스분무법에 의한 Fe계 비정질 분말의 제조와 볼밀링공정에 의한 연질 Cu분말과의 복합화 및 SPS 거동 (II) - II. 복합분말의 SPS와 특성 -)

  • Kim, Jin-Chun;Kim, Ji-Soon;Kim, H.J.;Kim, Jeong-Gon
    • Journal of Powder Materials
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    • v.16 no.5
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    • pp.326-335
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    • 2009

  • Fe based (Fe$_{68.2}$C$_{5.9}$Si$_{3.5}$B$_{6.7}$P$_{9.6}$Cr$_{2.1}$Mo$_{2.0}$Al$_{2.0}$) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The Fe-based amorphous powders and the Fe-Cu composite powders were compacted by a spark plasma sintering (SPS) process. Densification of the Fe amorphous-Cu composited powders by spark plasma sintering of was occurred through a plastic deformation of the each amorphous powder and Cu phase. The SPS samples milled by AGO-2 under 500 rpm had the best homogeneity of Cu phase and showed the smallest Cu pool size. Micro-Vickers hardness of the as-SPSed specimens was changed with the milling processes.

  • https://doi.org/10.4150/KPMI.2009.16.5.326 인용 PDF KSCI