%0 Journal Article
%T DIFFUSION OF La IN LIQUID Al-Si ALLOY
%A YANG Zhenguo
%A DU Weixi
%A Jilin University of Technology
%A Changchun
%A ChinaDU Senlin
%A LIU Sulan
%A Changchun Institute of Applied Chemistry Academia Sinica
%A Changchun
%A China
%A <br>YANG Zhenguo
%A DU Weixi
%A Jilin University of Technology
%A Changchun
%A ChinaDU Senlin
%A LIU Sulan
%A Changchun Institute of Applied Chemistry. Academia Sinica
%A Changchun
%A China
%J 金属学报(英文版)
%D 1989
%I 
%X The diffusion coefficients of lanthnum in liquid Al-Si alloy have been measured successfully by the anodic chronopotentiometry. At 973K, the diffusion coefficient of lanthanum (D_(La(Al-Si))) in liquid Al-5.2wt-%Si alloy equals (0.91±0.01)×10~(-5) cm~2 s~(-1) . In the range of temperatures 953-1053K, the relationship between the diffusion coefficient and the tem- perature is represented by 1gD_(La(Al-Si))=-1.78×10~(-3)-4909/T. The activation energy is Q=94.00kJ·mol~(-1). Using the diffusion data of lanthanum and strontium, the effect of the diffusion of the modifier on the incubation period of modification and cooling rate has been discussed.
%K diffusion coefficient
%K activation energy
%K lanthanum
%K Al-+Si alloy<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=45D1FD83B368A320CB503F951AC151AC&yid=1833A6AA51F779C1&vid=0B39A22176CE99FB&iid=708DD6B15D2464E8&sid=EC34D52BE81085CE&eid=CA9ED1AB4D9E3E04&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=13