Cathodic cage plasma nitriding (CCPN) of austenitic stainless steel (AISI 316): Influence of the different ratios of the (N2/H2) on the nitrided layers properties

被引：48
|
作者：
de Sousa, R. R. M. [1 ]
de Araujo, F. O. [2 ]
Gontijo, L. C. [3 ]
da Costa, J. A. P. [4 ]
Alves, C., Jr. [5 ]
机构：
[1] IFPI, Dept Mecan, Grp Pesquisa Mat & Metrol, Teresina, PI, Brazil
[2] Univ Fed Rural Semi Arido, Dept Ciencias Exatas & Nat, Mossoro, RN, Brazil
[3] Inst Fed Espirito Santo, BR-2904780 Vitoria, ES, Brazil
[4] UERN, Dept Fis, Mossoro, RN, Brazil
[5] Univ Fed Rio Grande do Norte, Dept Fis, LabPlasma, BR-59072970 Natal, RN, Brazil
来源：
VACUUM | 2012年 / 86卷 / 12期
关键词：
Cathodic cage plasma nitriding; S phase; Corrosion resistance; CORROSION BEHAVIOR; HYDROGEN;
D O I：
10.1016/j.vacuum.2012.05.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, we assess how the ratio (N-2/H-2) - working atmosphere gas mixture - influences the properties of the layers produced on austenitic stainless steel surface by Cathodic Cage Plasma Nitriding (CCPN). The nitriding atmospheres contained nitrogen and hydrogen in three proportions: 20% N-2 + 80% H-2, 50% N-2 + 50%H-2, and 80% N-2 + 20% H-2 delivered at a flow rate of 20 sccm. The effect of 100% N-2 was also examined. The morphology, microstructure and electrochemical properties of the layer produced were studied. The samples characteristics were determined by optical microscopy, x-ray diffraction, microhardness test and electrochemical potential curves. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2048 / 2053
页数：6
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