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首页> 外文期刊>Journal of Materials Engineering and Performance >High-Temperature Interaction Between Molten AlSr10 Alloy and Glass-Like Carbon Substrate
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High-Temperature Interaction Between Molten AlSr10 Alloy and Glass-Like Carbon Substrate

机译：AlSr10熔融合金与玻璃状碳基底之间的高温相互作用

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摘要

Wettability of glass-like carbon substrate (C-glc) by molten Al-10 wt.% Sr alloy (AlSr10) has been examined by a sessile drop method at 700-800 A degrees C for 120 min under vacuum. Non-contact heating to the test temperature combined with the removal of oxide film from the alloy drop was done using capillary purification procedure by squeezing the liquid alloy from a capillary. The influence of the type of capillary on wetting behavior of AlSr10/C-glc couples was noticed. Molten AlSr10 alloy does not wet C-glc at about 700 A degrees C forming the contact angles of 111A degrees with graphite capillary and 141A degrees with alumina capillary. At 800 A degrees C with alumina capillary, non-wetting-to-wetting transition takes place resulting in a final contact angle of 70A degrees. After testing at 800 A degrees C, the AlSr10/C-glc interface was revealed at the test temperature directly in the vacuum chamber by the drop suction procedure. Structural characterization of the interfaces by scanning and transmission electron microscopy combined with energy-dispersive x-ray spectroscopy and by scanning probe microscopy combined with Auger electron spectrometry did not show any new phases formed with Sr. It suggests that the dominant role in wettability improvement by alloying Al with 10 wt.% Sr was related with significant lowering of the surface tension of liquid metal and adsorption of Sr at the interface.
机译：已经通过固溶滴落法在真空下在700-800 A的温度下120分钟研究了熔融Al-10 wt。％Sr合金（AlSr10）对玻璃状碳基材（C-glc）的润湿性。使用毛细管纯化程序，通过从毛细管中挤压液态合金，进行非接触加热至测试温度，并从合金滴中除去氧化膜。注意到毛细管类型对AlSr10 / C-glc对的润湿行为的影响。熔融的AlSr10合金不会在约700 A的温度下润湿C-glc，形成与石墨毛细管的接触角为111A度和与氧化铝毛细管的接触角为141A度。在使用氧化铝毛细管的800 A摄氏度下，发生了从非润湿到润湿的过渡，最终接触角为70A度。在800 A的温度下进行测试后，通过滴吸程序直接在真空室中的测试温度下显示AlSr10 / C-glc界面。通过扫描和透射电子显微镜与能量色散X射线光谱相结合，以及通过扫描探针显微镜与俄歇电子能谱相结合对界面的结构表征没有显示出Sr形成任何新相，这表明通过Sr改善润湿性的主要作用Al与10 wt。％Sr合金化与液态金属表面张力的显着降低以及界面处Sr的吸附有关。

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