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Showing 1 to 14 of 14 for “"Low Thermal Expansion"”.
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Plasma spraying low thermal expansion alumino-silicate glasses
… compositions.</p><p>Crystallization behavior and thermal expansion of near-stoichiometric cordierite glasses and glass-ceramics doped with TiO<sub>2</sub> were investigated. The activation energy for growth of surface nucleated crystals was shown to be 433kJ/mol. and was related to titanium cation …
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Weld development for Incoloy alloy 908, a low thermal expansion superalloy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1995.
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Design, dynamic modeling, simulation and feedback control of hydrostatic bearing
… due to its high stiffness-to-weight ratio, low thermal expansion and corrosion resistance. In order to keep the cost of manufacturing as low as possible, a modular design that uses micron-level precision ceramic beams was chosen. Initial testing of the prototype carriage indicates that it …
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Corrosion resistance of NZP and aluminum titanate
To determine the feasibility of using low thermal expansion ceramics and aluminum titanate in diesel engine applications, the mechanical and thermal properties and corrosion resistance were evaluated. NZP (Ba<sub>1.25</sub>Zr₄P<sub>5.5</sub>Si<sub>.0.5</sub>0₂₄ and Ca<sub>0.5</sub> …
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Study on the Nanocomposite Underfill for Flip-Chip Application
… liquid medium polarity upon the rheological and thermal mechanical properties of underfill materials. The relaxation and dielectric properties studies indicate that the polymer molecular chain motion and polarization in the interphase region can strongly influence the material properties of …
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Parametric modeling of bolted joints between components made of particulate composite materials
… methods makes them a better choice for low-cost applications. They have good thermal conductivity, high electrical conductivity and low thermal expansion.;The main objective of this study is to predict numerically the stress distributions around the hole in a bolted joint made of …
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Synthesis and characterization of ultralow thermal expansion NZP- type compounds
New ultra-low thermal expansion materials, based on the NZP structure, have been developed and evaluated for future application in ceramic diesel engines which require exceptional thermal shock resistance. Twenty-four cation substitutions, with electron valence ranging from +1 to +5, were used to …
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Charakterisierung perowskitischer Hochtemperaturmembranen zur Sauerstoffbereitstellung für fossil gefeuerte Kraftwerksprozesse
… a high oxygen permeation rate and a preferably low thermal expansion coefficient. Moreover, the materials are long-term stable under power plant relevant conditions. The aim of this work is a better understanding of the material behaviour. Furthermore, on the basis of the results it should be …
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High temperature crystal chemistry of hydrous Mg- and Fe-rich cordierites
… bonds (M-0) lengthen upon heating. The unusually low thermal expansion of the Mg-cordierite is the result of its relatively "rigid" tetrahedral framework and the anisotropic expansion of octahedra isolated from each other. This anisotropic expansion leads to a slight rotation of the six-membered …
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Development of REBCO Tapes on Non-Metallic Flexible Substrates for RF Applications
… (REBCO, RE = rare earth) films on a flexible, low-cost, and low-thermal-expansion substrate offer a unique advantage for radio-frequency (RF) applications such as surface receiver coils for magnetic resonance imaging (MRI). Second-generation high-temperature superconductors (2G-HTS) are well …
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Dynamic simulation of 3D weaving process
… resistance, high temperature tolerance and low thermal expansion. Recent advances in weaving techniques have caused various textile fabrics to gain applications in high performance products, such as aircrafts frames, aircrafts engine blades, ballistic panels, helmets, aerospace components, …
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Synthesis and Characterization of trans-1,4-Cyclohexylene Ring Containing Poly(arylene ether sulfone)s
… been extensively studied due to their excellent thermal and mechanical properties. However, some applications are still limited when good solvent resistance and low thermal expansion coefficient are required. There has been a continuous interest in developing new PAES based on new monomers or …
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Microstructural characterization of a plasma sprayed ZrO2-Y2O3-TiO2 thermal barrier coating
The use of plasma sprayed ceramic coats as thermal barrier coatings (TBCs) for the protection of metallic structures and equipment from severe thermal, abrasive and corrosive conditions has been documented extensively in the last two decades. The state-of-the-art TBCs consist of a double layer …
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An in-situ synchrotron study of low positive and negative thermal expansion ceramics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms