Optimization Study of Pulsed DC Nitrogen-Hydrogen Plasma in the Presence of an Active Screen Cage

查看全文 作　　者：[1,2]A.SAEED;[1,2]A.W.KHAN;[3]F.JAN;[2]H.U.SHAH;[1,4]M.ABRAR;M.ZAKA-UI-[5]ISLAM;[2]M.KHALID;[3]M.ZAKAULLAH

机构地区：[1]National Centre for Physics,Quaid-i-Azam University Campus Islamabad;[2]Department of Physics,Gomal University;[3]Department of Physics,Quaid-i-Azam University;[4]Department of Physics,Hazara University Mansehra;[5]Department of Physics,Faculty of Science,University of Jazan

出　　处：《Plasma Science and Technology》索引2014年第16卷第5期,共5页

基　　金：supported by QAU URF,Pakistan Science Foundation(PSF)Project No.PSF/RES/Phys(152),HEC Project 20-2002(R&D)and HEC Project for Plasma Physics Laboratory Gomal University 摘　　要：A glow discharge plasma nitriding reactor in the presence of an active screen cage is optimized in terms of current density,filling pressure and hydrogen concentrations using optical emission spectroscopy(OES).The samples of AISI 304 are nitrided for different treatment times under optimum conditions.The treated samples were analyzed by X-ray diffraction(XRD) to explore the changes induced in the crystallographic structure.The XRD pattern confirmed the formation of iron and chromium nitrides arising from incorporation of nitrogen as an interstitial solid solution in the iron lattice.A Vickers microhardness tester was used to evaluate the surface hardness as a function of treatment time(h).The results showed clear evidence of improved surface hardness and a substantial amount of decrease in the treatment time compared with the previous work. 关键词：optical diagnostics plasma nitriding austenitic stainless steel

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Optimization Study of Pulsed DC Nitrogen-Hydrogen Plasma in the Presence of an Active Screen Cage

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