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Recommended Papers for: Microstructure

Total Papers Found: 10

Characterization of microstructural, mechanical and thermophysical properties of Th-52U alloy

This article studied the microstructural features of thorium-52 wt.% uranium alloy (Th-52U). Several thermal properties were also evaluated to assess the use of this alloy as a prospective fuel. The transient plane source (TPS) technique was used for evaluating the thermal conductivity of Th-52U alloy using slab specimen geometry. The experimentally determined thermal conductivity value of Th-52U alloy was found to be 25.6 W/m°C, which is ...

Author(s): , , , , , ,

Tailoring Ca3Co4O9 microstructure and performances using a transient liquid phase sintering additive

Research has been focused on the Co-based thermoelectric family since the discovery of thermoelectric properties in NaCo₂O₄ ceramics. The formation of strong grain boundaries has been achieved in several ceramic materials through the addition of metallic Ag, forming the liquid phase. In the case of Ca₃Co₄O₉ ceramic materials, it is essential to find a comparable additive. In this study, K₂CO₃ is analyzed as liquid phase promoter ...

Author(s): , , , , , , , , , ,

Preparation of porous mullite ceramics with low thermal conductivity 

This study analyses a mullite ceramic formed through foaming and starch consolidation of mullite powder, and how its thermal conductivity changes with porosity of the ceramic. The thermal conductivity was measured through the transient plane source (TPS) method with the TPS. As the porosity of the mullite ceramic increases so does the thermal conductivity....

Author(s): , , , , ,

Effect mechanism of mixing on improving conductivity of asphalt solar collector

Asphalt solar collector (ASC) is a conductive asphalt concrete and an eco-friendly method to de-ice roadways. This study examined if the addition of conductive fillers and various mixing parameters could improve the thermal conductivity and energy efficiency of ASC. A thermal conductivity system measured the thermal conductivity of the concrete samples using the transient plane source (TPS) method. Results showed that thermal conductivity was mostly improved by higher asphalt temperatures, ...

Author(s): , , , ,

Fabrication of highly porous silica thermal insulators prepared by gelation-freezing route

The purpose of this study was to produce high porosity silica thermal insulators through gelation-freezing. The thermal conductivities of the insulators in relation to porosity and microstructure were measured by a thermal constant analyzer based on the transient plane source (TPS) method. The thermal conductivities of the S1 and S10 samples remained fairly constant despite temperature changes, and were mainly affected by solid and gas conduction....

Author(s): ,