Catalytic efficiency of oxide particles on heterogeneous nucleation in aluminium alloys with miscibility gap
Kaban, Ivan and Köhler, Markus and Hoyer, Walter and Ratke, Lorenz (2010) Catalytic efficiency of oxide particles on heterogeneous nucleation in aluminium alloys with miscibility gap. High Temperatures - High Pressures, 39 (4), pp. 347-355. Old City Publishing. ISSN 1472-3441.
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It is shown that ZrO2 nanoparticles essentially stimulate the heterogeneous nucleation of droplets from the minority phase in Al-Pb monotectic alloys, which results in a significant increase of the number of Pb particles and in a decrease of their size upon solidification. This is related to the contact angle between coexisting liquid phases and ZrO2 ceramic, which is 20–30 degrees in the Al35Pb65 alloy and 35–40 degrees in the Al29.4In70.6 alloy. In the Al34.5Bi65.5 alloy at 670ºC, the contact angle at the (l-l) interface and ZrO2 ceramics shows a hysteresis between 37º and 115º. The contact angle between coexisting liquid phases and Al2O3 ceramic is close to zero in the Al34.5Bi65.5 alloy.
|Title:||Catalytic efficiency of oxide particles on heterogeneous nucleation in aluminium alloys with miscibility gap|
|Journal or Publication Title:||High Temperatures - High Pressures|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 347-355|
|Publisher:||Old City Publishing|
|Keywords:||aluminium alloys; miscibility gap; wetting; heterogeneous nucleation; inoculants.|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W FR - Forschung unter Weltraumbedingungen|
|DLR - Research area:||Space|
|DLR - Program:||W FR - Forschung unter Weltraumbedingungen|
|DLR - Research theme (Project):||W - Vorhaben Materialwissenschaftliche Forschung (old)|
|Institutes and Institutions:||Institute of Materials Physics in Space|
|Deposited By:||Prof. Lorenz Ratke|
|Deposited On:||16 Feb 2011 16:26|
|Last Modified:||16 Feb 2011 16:26|
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