%0 Journal Article
%T SURFACE TREATMENT OF HARD ALLOY TOOL BY HIGH INTENSITY PULSED ION BEAMS<br>强流脉冲碳离子束强化T5K10刀具机理研究
%A ZHANG Jian
%A ZHANG Gang
%A BI Jian-zhi
%A LI Yu-hai
%A YAO Jun
%A <br>张健
%A 张罡
%A 毕鉴智
%A 李玉海
%A 姚俊
%J 腐蚀科学与防护技术
%D 2005
%I 
%X Modification of hard alloy tools of T5K10 has been made by high intens ity pulse ion beams with various current density of 60 A/cm~2 , 100 A/cm~2 and 150 A/cm~2 respectively,with TIA-450 accelerator under the conditio ns of voltage 250 keV ,pulsed dur ation 80 ns and two pulse.By means of XRD,SEM?EDS and microhardness analyzin g it is revealed that asurface layer was fully remelted with current density 100 A/cm~2 and 150 A/cm~2 respectively.When irradiation with current density of 100 A/cm~2 ,surface microhardness increased to 1 25 times of that of the un-treated samples,but with 150 A/cm~2 ,the surface microhardness dose not further increase,as well as not induce farther changes of phase constituents.It is indicated that the quick s olidification of remelted surface layer results in a metastable microstroucture w ith refined greins,numerous gerain baundaries and defects etc.,which may then be responsible to the highe surface hardness.
%K high intensity pulsed ion beams
%K carbon ion accelerato
%K r
%K surface modification<br>强流脉冲离子束
%K 碳离子加速器
%K 表面改性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=9F6E6EC8BA5BB62698F6640073DDD6E1&aid=D10A9C03B530625B&yid=2DD7160C83D0ACED&vid=BCA2697F357F2001&iid=38B194292C032A66&sid=31611641D4BB139F&eid=BBF7D98F9BEDEC74&journal_id=1002-6495&journal_name=腐蚀科学与防护技术&referenced_num=3&reference_num=11