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Physics of Melt Extraction from the Mantle: Speed and Style [PDF]
Annual Review of Earth and Planetary Sciences, 2022 Melt extraction from the partially molten mantle is among the fundamental processes shaping the solid Earth today and over geological time. A diversity of properties and mechanisms contribute to the physics of melt extraction. We review progress of the past ∼25 years of research in this area, with a focus on understanding the speed and style of ...
Katz, RF +3 more
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Tailored Magnetic Fields in the Melt Extraction of Metallic Filaments
Metallurgical and Materials Transactions B, 2008 Porous bodies that are resistant to corrosion at high temperatures and thermal shock may be produced from metallic fibers. In order to accomplish reasonable homogeneity and high porosity, the cross-sectional area of the fibers and the width of distribution thereof need to be small. This article studies two techniques for making fibers.
Cramer, A. +8 more
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Production of TiNi fibers by melt extraction
Powder Metallurgy and Metal Ceramics, 2008The paper examines the production of TiNi fibers by pendent-drop melt extraction in vacuum. The mean effective diameter of the continuous fibers produced is 37 µm. Resistometrical investigation establishes that martensitic transformations in the fibers start at Ms = 17 °C.
V N Klimenko
exaly +2 more sources
Amorphous CaO · Al2O3 fibers by melt extraction
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 1996Abstract A novel melt extraction technique has been used to produce fine calcium aluminate (CaO · Al 2 O 3 ) fibers with wheel velocities of 1.5–65 m s −1 . The geometry of the fibers depends on the wheel velocity; at speeds −1 uniform diameter fibers were obtained, whereas at higher velocities Rayleigh waves formed on the fibers owing to ...
R A L Drew, J O Ström-Olsen
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Melt extraction processing of structural Y2O3–Al2O3 fibers
Journal of the European Ceramic Society, 2000Compounds in the system Y2O3-Al2O3 are promising materials for optical, electronic and structural applications. In this study, a melt extraction process with a new approach to making ceramic fibers was used to produce amorphous fibers in the Y2O3‐Al2O3 system within the 20‐30-micron size range.
R A L Drew
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Adhesion interaction on melt extraction from pendant drop
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2001Abstract A technique of pendant drop melt extraction (PDME) is reported and certain results describing thin stainless steel fibers obtained by means of PDME were studied. Adhesion interaction between metal melt and disc-crystallizer was also considered. The adhesion work was established to be approximately 1–2 J/m2. It was shown that melt adhesion to
W. Archangelsky +2 more
exaly +2 more sources
Melt extraction in the Earth's mantle: Constraints from U–Th–Pa–Ra studies in oceanic basalts
Earth and Planetary Science Letters, 2006 International audienceU-series studies in oceanic basalts are critical for understanding melting and melt extraction in the Earth's mantle. The combined results of a detailed geochemical study of melting and melt extraction at Theistareykir, northern ...
Andreas Stracke +2 more
exaly +3 more sources
Production of dental alloy by the melt extraction technique
Journal of Materials Science, 1978Filaments of a commercial dental alloy (Ag3Sn) have been produced using the technique of pendant drop melt extraction. The filaments are 50 μm in diameter with a mean grain size of 5μm. Both the mechanical and structural properties of these wires have been determined to show that the results are consistent with those predicted in a previous study on ...
J. V. Wood, S. C. King
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Melt-extracted oxide ceramic fibres — the fundamentals
Journal of Materials Science, 1996A melt-extraction technique, using a sharpened molybdenum wheel, has been used to produce fine oxide ceramic fibres. Wetting of the molybdenum wheel by molten ceramic is a key parameter in the melt-extraction process. Two types of fibre are generally obtained, depending on the extraction speed.
M. Allahverdi +2 more
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The role of H2O on the extraction of melt from crystallising magmas
Earth and Planetary Science Letters, 2019 The segregation and accumulation of felsic melts, from crystallising crustal magma reservoirs, is essential for the chemical evolution of the crust and is a phenomenon preceding some of the largest eruptions on Earth.
Eva Hartung +2 more
exaly +2 more sources