Research & Reviews: Journal of Material Sciences
MenuISSN:2321-6212
ISSN:2321-6212
Mosalagae Mosalagae, Ahmed AAG. Al-Rubaiy, Russell Goodall and Robert Woolley
Department of Materials Science and Engineering, University of Sheffield, UK
Department of Mechanical Engineering, University of Sheffield, UK
ScientificTracks Abstracts: Res. Rev. J Mat. Sci.
Porous copper tapes with high surface area to thickness ratio are attractive for thermal management in portable electronics where good heat transfer performance is required. In this study, the porous sheets of thickness down to 1350μm were investigated for heat transfer performance. The porous copper samples were produced by a novel process combining lost carbonate sintering (LCS) and tape casting. This process allows the flexibility to produce copper double-layer structure consisting of a porous section with a wide range of porosities on a dense substrate. Here double-layer structures consisting of a porous layer of porosities ranging from 30- 70% were investigated. Their suitability for heat sink applications were investigated with simple assessments of the thermal properties under forced convection using air as a coolant. Through experiments, the heat transfer performance of the thin porous tapes was systematically studied under two different heating systems; a cylindrical and flat heating systems. The heat generated within the heating systems was controlled by AC/DC power supply. Also the flow rate of air passing through the samples was varied between the ranges of 0 – 0.5 kg/s. T- type thermometers and an Infrared thermography sensor were installed in the system to track in and out and surface temperatures of the system. This allowed behavior of heat dissipation by porous copper tapes to be effectively studied. The initial experimental results showed that, from the thermal viewpoint, the porous copper heat sinks investigated here have an excellent heat transfer performance. The outcome of this study is fully discussed in the presentation.
Mosalagae Mosalagae is a professional, highly motivated and dedicated materials science and engineering researcher. His main interest is on development of porous metals for heat transfer applications by powder metallurgical processes. He developed a process which combines lost carbonate sintering (Zhao et al, 2004) and tape casting to process copper powder into thin sheet of porous copper, and further developed a heat transfer rig to investigate the porous heat sinks produced by simple assessment of thermal properties. In this rig, porous metals are tested under a forced convection using air as a coolant.