Topic
Thermal expansion
About: Thermal expansion is a research topic. Over the lifetime, 21040 publications have been published within this topic receiving 349407 citations. The topic is also known as: heat expansion.
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TL;DR: In this article, the problems involved in the fabrication and the brazing of these composites were elucidated and the main focus was put on the discussion of the methods to overcome these difficulties.
219 citations
TL;DR: In this paper, an unprecedented high thermal conductivity of 695 W/m K for polymer matrix composites was obtained, and the densities of all the composites are lower than 1.5 g/cc.
219 citations
TL;DR: In this paper, a series of La 2 O 3 -ZrO 2 -CeO 2 composite oxides were synthesized by solid-state reaction, and the final product kept fluorite structure when the molar ratio Ce/Zr ≤ 07/03.
Abstract: A series of La 2 O 3 –ZrO 2 –CeO 2 composite oxides were synthesized by solid-state reaction The final product keeps fluorite structure when the molar ratio Ce/Zr ≥ 07/03, and below this ratio only mixtures of La 2 Zr 2 O 7 (pyrochlore) and La 2 O 3 –CeO 2 (fluorite) exist Averagely speaking, the increase of CeO 2 content gives rise to the increase of thermal expansion coefficient and the reduction of thermal conductivity, but La 2 (Zr 07 Ce 03 ) 2 O 7 has the lowest sintering ability and the lowest thermal conductivity which could be explained by the theory of phonon scattering Based on the large thermal expansion coefficient of La 2 Ce 325 O 95 , the low thermal conductivities and low sintering abilities of La 2 Zr 2 O 7 and La 2 (Zr 07 Ce 03 ) 2 O 7 , double-ceramic-layer thermal barrier coatings were prepared The thermal cycling tests indicate that such a design can largely improve the thermal cycling lives of the coatings Since no single material that has been studied so far satisfies all the requirements for high temperature thermal barrier coatings, double-ceramic-layer coating may be an important development direction of thermal barrier coatings
217 citations
TL;DR: In this paper, the authors show that the observed thermal expansion is a function of crack porosity, heating rate, and previous maximum temperature as well as mineralogical composition and preferred crystal orientation.
217 citations
TL;DR: In this article, a high alignment of graphene nanosheets (GNSs) in GNS/Cu composites was achieved through a vacuum filtration method followed by spark plasma sintering.
217 citations