%0 Journal Article
%T Effect of La2O3 on Hardness Distributions of Laser Clad Ferrite--Based<br>La2O3对激光熔覆铁基合金层硬度及其分布的影响
%A ZHAO Gaomin
%A WANG Kunlin
%A LIU Jiajun
%A <br>赵高敏
%A 王昆林
%A 刘家浚
%J 金属学报
%D 2004
%I 
%X The morphologies of laser clad ferrite-based alloy coatings with different contents of rare earth (RE) were observed by SEM. The nanohardness and the elastic modulus of the near the surface and overlapping area were tested by nanoindentation. The hardness distribution in the coating was measured by microhardness tester. The experimental results show that the microstructure of the coatings with RE was refined, the spacing of second dendrites was reduced, and spacing the nanohardness and elastic modulus were increased. The average hardness (HV) of the coating with RE is about 500, which is 50 higher than that without RE. The mechanism of the RE effect was discussed.
%K laser cladding
%K rare earth
%K elastic modulus
%K nanohardness<br>激光熔覆
%K 稀土
%K 弹性模量
%K 纳米硬度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=9D1797BF31409A54&yid=D0E58B75BFD8E51C&vid=1371F55DA51B6E64&iid=F3090AE9B60B7ED1&sid=CA10C709B736BBEA&eid=9C76A7541E963918&journal_id=0412-1961&journal_name=金属学报&referenced_num=6&reference_num=18