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 paper, the authors reviewed recent advances in the understanding of anomalous thermal expansion behavior of open frame-work compounds and found that the phonons responsible for anomalous behavior are different in all these compounds.
119 citations
TL;DR: The average linear thermal expansion coefficients of strontium series perovskite type oxides are 1.13×10−5 K−1 for SrHfO3 in the temperature range between 423 and 1073 K as discussed by the authors.
119 citations
01 Jan 2005
TL;DR: In this paper, the authors focus on prepreg and slurry cast SiC-based ceramic matrix composites (MI-CMCs) with particular reference to applications in power generation gas turbines.
Abstract: Silicon melt infiltrated, SiC-based ceramic matrix composites (MI-CMCs) have been developed for use in gas turbine engines. These materials are particularly suited to use in gas turbines due to their low porosity, high thermal conductivity, low thermal expansion, high toughness and high matrix cracking stress. Several variations of the overall fabrication process for these materials are possible, but this paper will focus on “prepreg” and “slurry cast” MI-CMCs with particular reference to applications in power generation gas turbines. These composites have recently been commercialized under the name of HiPerComp™.
119 citations
TL;DR: In this paper, the principal axial thermal expansion coefficients for the (3C, (4H), (5H), and (6H) polytypes of SiC are investigated to identify the structural role of the stacking layer sequence as it affects the thermal expansion.
Abstract: The principal axial coefficients of thermal expansion for the (3C), (4H), and (6H) polytypes of SiC are considered to identify the structural role of the stacking layer sequence as it affects the thermal expansion A general equation based on the fractions of cubic and hexagonal layer stacking is developed that expresses the principal axial thermal expansion coefficients of all of the SiC polytypes It is then applied to address the thermal expansion anisotropy of the noncubic SiC structures
119 citations
01 Jan 1986
TL;DR: In this article, the density of solids and the lattice constants (for the latter see “Uranium” Suppl. Vol. C4, 1984, pp. 112/7) are directly interrelated.
Abstract: The density of solids and the lattice constants (for the latter see “Uranium” Suppl. Vol. C4, 1984, pp. 112/7) are directly interrelated. In general the X-ray density calculated from the lattice constants agrees very well with the density determined from pycnometric measurements. Except for a relatively narrow temperature range in the neighborhood of the melting point, the dilatometrically measured thermal expansion coefficient generally agrees well with the lattice constant changes determined via X-ray diffraction. In uranium dioxide, however, several additional difficulties arise, which make the measurements uncertain and the results less comparable.
119 citations