%0 Journal Article
%T MATHEMATICAL MODELS OF NITROGEN CONCENTRATION PROFILE OF ION NITRIDED LAYERS AND COMPUTER SIMULATION
%A XIA Lifang YAN Mufu Harbin Institute of Technology
%A Harbin
%A China Laboratory of Metal Materials
%A Heat treatment
%A Harbin Institute of Technology
%A Harbin
%A China
%A <br>XIA Lifang YAN Mufu Harbin Institute of Technology
%A Harbin
%A China Laboratory of Metal Materials and Heat treatment
%A Harbin Institute of Technology
%A Harbin
%A China
%J 金属学报(英文版)
%D 1989
%I 
%X The mathematical models of the kinetics of the layer growth at different ion nitriding condi-tions of armco iron.steels 45,40Cr,42CrMo and 38CrMoAl have been established.Based onthese models the expression of nitrogen concentration profile of ion nitrided layers have beendeduced with profile simulating method.They areC_=C_(min)~+(P_4)/(ξ_1-x)+(P_5)/(ξ_(10)~2)(ξ_1-x)~2C_(γ′)=C_(min)~(γ′)+(P_1)/(ξ_(21))(ξ_2-x)+(P_2)/(ξ_(21)~2)(ξ_2-x)~2C_α=C_(min)~α+(C_(33))/(C_(33))/(ξ_(32))(ξ_3-x)~3Using these models,the kinetics of layer growth and the nitrogen concentration profile of ionnitrided layers were sinulated on Apple-Ⅱ computer.Results show that the simulated curvescoincide quite well with the experimental data.
%K computer simulation
%K ion nitriding
%K nitrogen concentration profile<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=A3AFAEA8D3EF055B4F4561F9282B6803&yid=1833A6AA51F779C1&vid=0B39A22176CE99FB&iid=DF92D298D3FF1E6E&sid=13553B2D12F347E8&eid=96C778EE049EE47D&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=1&reference_num=7