Numerical investigation of heat transfer in aluminum nitride ceramics with engineered microstructures
- Authors
- Park, Semin; Kim, Minsoo; Kim, Seon-Gyu; Shin, Sangha; Ahn, Byeongho; Ryu, Sung-Soo; Cho, Jaehun; Kwak, Yunsang
- Issue Date
- Feb-2024
- Publisher
- ELSEVIER
- Keywords
- AlN; Finite element method; Thermal conductivity; Two-step sintering; Whisker
- Citation
- MATERIALS LETTERS, v.356
- Journal Title
- MATERIALS LETTERS
- Volume
- 356
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26475
- DOI
- 10.1016/j.matlet.2023.135554
- ISSN
- 0167-577X
1873-4979
- Abstract
- We present a comprehensive investigation into the thermal conduction behavior of aluminum nitride (AlN) ceramics with engineered microstructures. A finite element method is employed to investigate the impact of grain boundaries, secondary phases, pores, and inclusion of reinforcement additives on the thermal conductivity of polycrystalline AlN ceramics. Our numerical approach is built upon experimental observations that provide geometric and materials-based understanding for numerical modeling. Our model accurately predicts the thermal conductivity of hot-pressed AlN ceramics, which underwent systematic microstructure engineering through fine-tuning sintering parameters. This numerical approach provides valuable insights into microstructure engineering and a broader understanding of heat transfer in AlN ceramics.
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- Appears in
Collections - School of Mechanical System Engineering > 1. Journal Articles
- Department of Materials Science and Engineering > 1. Journal Articles
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