Effect of the W-W contiguity on conductivity of W-Cu composite using the Voronoi diagram
- Authors
- Lee, Young Jung; Kim, Dae-Gun; Kim, Gil-Su; Kim, Deok-Soo; Kim, Young Do
- Issue Date
- Jan-2022
- Publisher
- WALTER DE GRUYTER GMBH
- Keywords
- W-Cu; Nanocomposites; W-W contiguity; Conductivity; Voronoi diagram
- Citation
- INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, v.96, no.3, pp.255 - 258
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
- Volume
- 96
- Number
- 3
- Start Page
- 255
- End Page
- 258
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/139769
- DOI
- 10.3139/ijmr-2005-0046
- ISSN
- 1862-5282
- Abstract
- W- 15wt.% Cu nanocomposite powder samples were fabricated by ball-milling and subsequent hydrogen-reduction. The powder samples were heated to 1200 degrees C at 5 and 20 degrees C min(-1) and sintered for 1 h to obtain different sintered microstructures. The homogeneity of the sintered microstructures was evaluated by the standard deviation of the Vickers hardness. The W-W contiguity was calculated by using Voronoi diagrams. The sintered microstructure in case of the 20 degrees C min(-1) sample was more homogeneous and had lower W-W contiguity than the 5 degrees C min(-1) sample. The microstructural homogeneity was directly related to the W-W contiguity. Thermal conductivity of the 20 degrees C min(-1) sample was about 5% higher than the thermal conductivity of the 5 degrees C min(-1) sample. This indicates that the thermal conductivity is affected by the W-W contiguity resulting from the homogeneity of the sintered microstructure.
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