%0 Journal Article
%T FORMATION OF Fe-N COMPOUNDS BY LASER NITRIDATION IN AN ATMOSPHERIC AMBIENT<br>FORMATION OF Fe—N COMPOUNDS BY LASER NITRIDATION IN AN ATMOSPHERIC AMBIENT
%A YLYang
%A FJSun
%A DZhang
%A <br>Y.L.Yang
%A F.J.Sun
%A D.Zhang
%J 金属学报(英文版)
%D 2003
%I 
%X The formation of Fe-N compounds by laser nitriding in an atmospheric ambient wasreported. By CW-CO2 laser irradiation on pure ferrite iron in the atmospheric am-bient, Fe-N compounds (including Fe2N, Fe3N and Fe4N) are formed as a result of alaser-enhanced and temperature-enhanced reactions. The samples were analyzed withX-ray diffraction. It is found that the laser power density, scanning speed and nitro-gen temperature are the main factors influencing the formation of Fe-N compounds.Nitrogen can be activated by pre-heating at some temperature. Nitrogen activationand sample surface melting by CW-CO2 laser greatly enhance the reaction betweenthe sample surface and nitrogen beam. After annealing at 500℃ for 3h, some Fe2Nand Fe3N converted into more stable Fe4N.
%K laser nitriding
%K nitride
%K Fe-N compound<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=2322555F2DDDBD187B4138C2C220310F&yid=D43C4A19B2EE3C0A&vid=7801E6FC5AE9020C&iid=0B39A22176CE99FB&sid=12DC19455C3A2FA8&eid=3986B25773CB6C30&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=13