Wetting behavior of aluminium and filtration with Al_2O_3 and SiC ceramic foam filters  

铝的润湿行为以及Al_2O_3和SiC陶瓷过滤器的过滤行为(英文)

作　　者：包萨日娜 Martin SYVERTSEN Anne KVITHYLD Thorvald ENGH 

机构地区：[1]SINTEF Materials and Chemistry [2]Department of Materials Science and Engineering, Norwegian University of Science and Technology

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第12期3922-3928,共7页中国有色金属学报（英文版）

基　　金：the Research Council of Norway (RCN) funded BIP Project No. 179947/I40 and BIA Project No. 219940/O30;the partners: Alcoa Norway ANS, SAPA Heat Transfer AB, Hydro Aluminium AS, SINTEF MK Trondheim, and NTNU;Funding by the industrial partners and RCN

摘　　要：The wetting behavior between liquid aluminium and substrates made from industrial Al2O3 and SiC based ceramic foam filters （CFF） was investigated. The same CFF filters were also tested in plant scale filtration experiments. The wetting experiment results show that the SiC based filter material is better wetted by liquid aluminium than the Al2O3 based filter material. This indicates that the improved wetting of aluminium on a filter material is an advantage for molten metal to infiltrate the filter during priming. Also, better wetting of Al-filter might increase the removal efficiency of inclusions during filtration due to better contact between filter and metal. Non-wetted inclusions are easier to be removed.检测了工业用Al2O3过滤器和SiC过滤器与液态铝的润湿性并在工厂使用以上2种陶瓷过滤器过滤铝液。实验结果表明:Si C过滤器比Al2O3过滤器更易于润湿液态铝。提高液态铝与过滤器的润湿性有助于铝液透过过滤器,提高夹杂物的去除率,同时,易于去除与铝不浸润的杂质。

关 键 词：FILTRATION wettability aluminium Al2O3 filter SiC filter Al2O3 inclusion Al4C3 inclusion 

分 类 号：TQ051.85[化学工程] TG146.21[一般工业技术—材料科学与工程]