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Pure aluminium, Al-12%Si and Al-3-3,5%Ti alloys were used for researching of graphite temperature dependence of wettability. Plane-parallel graphite plates were used as substrates. …
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1-181 wetting of graphite by aluminium, but addition of silicon – oppositely gives a little decelerations of wetting. For example, at 1200 0С the angle Θ achieves 850 for Al, 750 for Al-Ti and ...
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To improve the wetting of the Al-C interface during the preparation of Al-Ti-C grain refiners, researchers have employed a series of strategies such as strong mechanical agitation and the addition of rare earth elements [2], [25].However, these methods also possess great disadvantages, such as the complicated production process requirements and high production …
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Schematic of a section through the graphite syringe. For the wetting experiments, the substrates are placed inside the tube in the hot-zone of the furnace. ... Fig. 9, Fig. 10 show the equilibrium wetting behavior of pure aluminum and the three alloys on alumina and on A-plane sapphire respectively.
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Abstract: The wettability of pure aluminium on filter materials and on inclusions is believed to be an important factor affecting the filtration of aluminium. The contact angles of molten aluminium on alumina, SiC and graphite were measured under 10 -8 bar high vacuum in the temperature range of 1000-1300 ℃.
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The wettability of pure aluminium on filter materials and on inclusions is believed to be an important factor affecting the filtration of aluminium. The contact angles of molten aluminium on alumina, SiC and graphite were measured under 10 −8 bar high vacuum in the temperature …
WhatsApp: +86 18221755073
The wetting of liquid metals on solid metals and non-metallic materials had been studied extensively since the early 1900s 1, 2.Of particular interest to materials scientists are the systems involving aluminum and aluminum oxide (Al 2 O 3), silicon carbide (SiC), and graphite.This is mainly because of the strong possibilities of these combinations in forming …
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Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 2004, 35(5): 999âˆ'1009. [4] BAO Sarina, TANG Kai, KVITHYLD A, ENGH T, TANGSTAD M. Wetting of pure aluminium on graphite, SiC and Al 2 O 3 in aluminium filtration [J].
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The wettability of pure aluminium on filter materials and on inclusions is believed to be an important factor affecting the filtration of aluminium. The contact angles of molten aluminium on alumina, SiC and graphite were measured under 10 −8 bar high vacuum in the temperature range of 1000–1300 °C. To describe the wetting behaviour of the Al on ceramic at lower …
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The wettability of pure aluminium on filter materials and on inclusions is believed to be an important factor affecting the filtration of aluminium. The contact angles of molten aluminium on alumina, SiC and graphite were measured under 10−8 bar high vacuum in the temperature range of 1000–1300 °C. To describe the wetting behaviour of the Al on ceramic at lower …
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alumina, graphite (ISO-88) or AlF 3 and 99.999% pure aluminium. The aluminium was cut into small 3mm cubes, then ground with 320 mesh SiC paper and cleaned in ethanol to minimize the oxide
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Pure aluminum would be expected to begin wetting a carbon surface right from its melting point, since the enthalpy of the aluminum carbide formation reaction is equal to 17,179 ... Aluminum began to wet VPP graphite at 1123~ and the other graphite grades at I173~ The angles of contact of all the graphite grades decreased witharisingtest ...
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The wettability of pure aluminium on filter materials and on inclusions is believed to be an important factor ... 。10-8bar1000~1300°C,、SiC。
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DOI: 10.1016/J.MSEA.2007.10.113 Corpus ID: 136833258; Wetting of pure aluminum and selected alloys on polycrystalline alumina and sapphire @article{Klinter2008WettingOP, title={Wetting of pure aluminum and selected alloys on polycrystalline alumina and sapphire}, author={Andreas J. Klinter and Guillermo Mendoza …
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Pure aluminum would be expected to begin wetting a carbon surface right from its melting point, since the enthalpy of the aluminum carbide formation reaction is equal to 17,179 kJ/mole [3].
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Wetting between aluminium and Al3C4 (graphite) is determined in kinetic studies in the higher temperature range 1000–1200°C. ... The wettability of pure aluminium on filter materials is ...
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Wetting of pure aluminium on graphite, SiC and Al2O3 in aluminium filtration Abstract
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This indicates that aluminium does not wet alumina or graphite (or Al 4 C 3) around the casting temperature, but wets SiC at this temperature. Thus a priming height is required for …
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The high-temperature liquid Al - solid S355J2N steel interaction was studied using a modified wettability test. A sessile drop method with a capillary purification procedure was employed for the first time, involving non-contact aluminium isothermal heating followed by the dropping of a pure liquid Al drop onto the severely deformed steel substrate and isothermal …
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Graphite filters have previously been employed based on petrol coke. Wetting between molten aluminium and graphite is studied. Al 3 C 4 is formed at the interface between aluminium and graphite. In filtration of aluminium inclusions such as Al 3 C 4 formed in the hall electrolysis are removed. Wetting between aluminium and Al 3 C 4 (graphite) is determined in kinetic studies …
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This chapter contains sections titled: Introduction Experimental Procedure Results Discussion Wetting in Filtration Conclusions Future Work Acknowledgment
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To study wetting of SiC and graphite in such a system, a high vacuum laboratory furnace containing only a minute amount of oxygen has been chosen. ... The experiments were carried out using 99.999% pure aluminium and substrates produced from 98.9% single crystal SiC (Washington Mills, Norway) and ISO-88 Graphite substrates. The
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Wetting between aluminium and Al3C4 (graphite) is determined in kinetic studies in the higher temperature range 1000–1200°C. The results are extrapolated down to …
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The wettability of pure aluminium on filter materials is believed to be an important factor affecting the filtration of aluminium. ... Wetting between aluminium and Al3C4 (graphite) is determined ...
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The aim of aluminium filtration is to remove inclusions such as Al 3 C 4.For inclusions to be removed they have to come in close contact with the filter walls composed of Al 2 O 3 or SiC. It is therefore important that the molten aluminium has close contact with the filter wall.
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The experiments were carried out using 99.999% pure aluminium and substrates produced from 98.9% single crystal SiC (Washington Mills, Norway) and ISO-88 Graphite substrates.
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The wettability of pure aluminium on filter materials and on inclusions is believed to be an important factor affecting the filtration of aluminium. The contact angles of molten …
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The wetting angle was observed to be 177°. The wetting of a metal on graphite or diamond surface depends on its ability to form carbide at the interface. Literatures suggest that wetting is usually not observed below 900 °C. In Al–graphite system, a wetting angle of 40° was observed at 1227 °C with formation of Al 4 C 3 at the interface ...
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Wetting of Pure Aluminium on Graphite, SiC and Al 2 O 3 in Aluminium Filtration. ... Wetting between aluminium and Al3C4 (graphite) is determined in kinetic studies in the higher temperature ...
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Wetting of Pure Aluminium on Filter Materials Graphite, AlF 3 and Al 2 O 3
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