Evaluation of the cross-plane thermal conductivity of double-layer materials. (1st February 2017)

• Record Type: Journal Article
• Authors: Kim, Jong-Gu; Bae, Dong-Hyun; Hahn, Byung-Dong; Cho, Young-Rae
• Is Part Of: Composites. Number 110(2017)
• Page Start: 1
• Page End: 6
• Publication Date: 2017-02-01
• Subjects: Layered structures -- Thermal properties -- Thermal analysis -- Joints; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2016.10.086
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Double-layer cladding materials were fabricated by roll bonding using stainless steel (STS439) and aluminum (Al1050) sheets to investigate the thermal conduction of multi-layer composites. The measured thermal conductivities were compared to values calculated from cross-plane models that are widely used for resistor connections in electrical circuits. The measured thermal conductivity was 88.3 W/m·K for the sample containing 76 vol% of Al1050. Unexpectedly, the measured cross-plane thermal conductivities were always higher than the values calculated from the series model. The high cross-plane thermal conductivities were attributed to the contribution of phonons to thermal transfer. A deviation index of the thermal conductivity, Fm(S), is proposed, which effectively describes the cross-plane thermal conductivity characteristics of double-layer materials.