Thermal Conductivity Paper Database

Damage-tolerant metallic composites via melt infiltration of additively manufactured preforms

This article studied A356/316L composites which were fabricated by infiltrating additively manufactured 316L lattices with molten A356. Various tests were conducted on the properties of the composites to determine if the two-step processing used to manufacture them avoided the issues that current fusion-based additive manufacturing techniques have. The thermal conductivity of the composites was determined with the transient plane source (TPS) technique. The results showed that the thermal conductivity ...

Author(s): Alexander E. Pawlowski, Amelia M. Elliott, Amit Shyam, Derek A. Splitter, J. Keith Carver, Matthew R. French, Ralph B. Dinwiddie, Thomas R. Muth, Zachary C. Cordero

Synthesis and Electronic Transport of Hydrothermally Synthesized p-Type Na-Doped SnSe

A series of polycrystalline Sn1-xNaxSe with x = 0.00, 0.02, 0.04, 0.10 were fabricated using hydrothermal synthesis, followed by evacuated-and-encapsulated sintering. Their thermoelectric properties were then evaluated. The thermal constant analyser was used to find the thermal conductivity of each system by using the transient plane source (TPS) technique. The thermal conductivity was then used in determining the thermoelectric figure-of-merit, the ZT value of the system....

Author(s): Chia-Jyi Liu, Wei-Hao Chen, Zong-Ren Yang

Hybrid microwave processing of Ca₃Co₄O₉ thermoelectrics

This article examined the thermoelectric properties of Ca₃CO₄O₉ ceramic samples that were sintered using the hybrid microwave (HMW) technique. This microwave process was found to promote densification and grain texturing in the ceramics which increased their electrical conductivity. However, the thermal conductivity was unaffected by the microstructural changes....

Author(s): A.V. Kovalevsky, F. Amaral, K. Miyazawa, M.P.F. Graça

Temperature influence on the effective thermal conductivity of cellular metals measured in stagnant air

This study aimed to experimentally measure the thermophysical properties of cellular metals, focusing on effective thermal conductivity. The transient plane source (TPS) technique was used to measure the thermal conductivity of hollow sphere structures from different steel alloys and open cell structures made of iron-chromium-aluminum alloy (FeCrAl) for temperatures of 250°C and 800°C in air, respectively. From the experimental results, it was seen that the effective thermal conductivity values were ...

Author(s): R. Wulf, U. Gross, V. Skibina

Design of ceramic phosphor plate with functional materials for applications in high power LEDs 

Traditionally, white LED's are made by mixing phosphor with an epoxy resin. But, the phosphor is not always evenly distributed, and the epoxy resin has a low thermal conductivity resulting in accelerated thermal aging during operation. This article studies the effects of implementing a ceramic phosphor plate with varying concentrations of magnesium oxide, and silicon dioxide. It was found that as the magnesium oxide concentration increased so did the thermal ...

Author(s): Byung Woo Jeong, Dae-Ho Yoon, Eun-Kyung Ji, Mong Kwon Jung, Sang Hwan Bak, Young-Hyun Song