A Mechanistic Study of the Effects of Nitrogen on the Corrosion Properties of Stainless Steels

Levey, P. R.; Bennekom, A. van

doi:10.5006/1.3293567

Cited by 122 publications

(62 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The specimen was set into a conventional three electrodes system cell containing about 130 cm 3 of solution. The reference electrode was Ag/AgCl/KCl (2 mol dm Ϫ3 ) maintained at the same temperature as the cell.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…[1][2][3][4] Many authors have investigated corrosion property of nitrogen added stainless steels and recognized that nitrogen improves corrosion resistance especially for localized one. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Pitting, the most typical form of localized corrosion, is a crucial issue for passivating materials in practical use.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Nitrogen Alloying on the Pitting of Type 310 Stainless Steel.

Yashiro¹,

Hirayasu²,

Kumagai³

2002

ISIJ International

View full text Add to dashboard Cite

The effect of nitrogen alloying on the pitting behavior of type 310 stainless steel has been investigated through measurements of pitting potential (E ' pit ) as a function of temperature and concentration of NaCl (C NaCl ). Nitrogen was effective to shift E ' pit to nobler direction especially at temperatures below critical one. The critical pitting temperature was defined as the temperature below which the usual linear relationship between E ' pit and logarithm of C NaCl did not stand. Alloying the stainless steel with nitrogen increased the critical pitting temperature. Below the critical temperature where E ' pit did not follow the usual dependency on C NaCl , pitting was retarded most effectively by nitrogen except when C NaCl was so high that E ' pit lay below ca. 400 mV. Although the whole mechanism of nitrogen is not still clear, nitrogen is most likely to suppress acidification of pitting site through formation of ammonium ion. Nitrogen in a metal matrix and nitrate in a solution seemed to have a common feature with respect to the potential dependency of inhibition efficiency. The fact that nobler potentials were more favorable for both nitrogen in metal matrix and nitrate in a solution for inhibition seemed to indicate that oxidation of nitrogen to nitrate might also be involved in the inhibition mechanism.KEY WORDS: nitrogen; stainless steel; pitting; chloride; nitrate; temperature. Table 1. Chemical composition of the stainless steels investigated (mass%).

show abstract

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Alloying on the Pitting of Type 310 Stainless Steel.

Yashiro¹,

Hirayasu²,

Kumagai³

2002

ISIJ International

View full text Add to dashboard Cite

show abstract

“…Also, it is generally accepted that the additions of nitrogen improve resistance to localized corrosion (cf. Newman and Shahrabi, 1987, Levey and van Bennekom, 1995, JargeliusPettersson, 1999. The dominant effect of nitrogen is associated with repassivation and may be due to the local formation of NH 4 + ions, which buffer the pH near the interface or to the accumulation of nitrogen on the surface, which alters the kinetics of the dissolution.…”

Section: Generalization Of the Model As A Function Of Alloy Compositionmentioning

confidence: 99%

Prediction of Corrosion of Advanced Materials and Fabricated Components

Anderko¹,

Engelhardt²,

Łencka³

et al. 2007

View full text Add to dashboard Cite

“…In these steels, solidification starts at about 1450 °C with the formation of ferrite (α), which gives origin to austenite (γ) near 1300 °C [5] . The σ phase nucleates preferentially in interface α/γ incoherent with the matrix in the range of 600 to 950 °C and compromises the cast steels toughness 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Effect of niobium in the phase transformation and corrosion resistance of one austenitic-ferritic stainless steel

et al. 2014

View full text Add to dashboard Cite

Austenitic-ferritic stainless steels containing 0.2% and 0.5% niobium were evaluated with respect to the microstructures, microhardness, pitting potential resistance, electrochemical impedance and wearing tests. Niobium is an alphagenic element and has a great influence on phase transformation of duplex stainless steels. In the present investigation, the samples were annealed at 1050 °C and aged at 850 °C to promote the formation of sigma phase. The pitting potential resistance and electrochemical impedance were evaluated in 3.5 % sodium chloride solution. The wear coefficients were calculated by micro-wear tests conducted using a fixed ball machine and aluminum oxide as abrasive. The results show that the niobium content lead to increase on Laves phase formation. This phase, in association with the sigma phase, causes a significant increase in the hardness and wear resistance with a decrease on corrosion resistance of the austenitic-ferritic stainless steels.

show abstract

A Mechanistic Study of the Effects of Nitrogen on the Corrosion Properties of Stainless Steels

Cited by 122 publications

References 17 publications

Effect of Nitrogen Alloying on the Pitting of Type 310 Stainless Steel.

Effect of Nitrogen Alloying on the Pitting of Type 310 Stainless Steel.

Prediction of Corrosion of Advanced Materials and Fabricated Components

Effect of niobium in the phase transformation and corrosion resistance of one austenitic-ferritic stainless steel

Contact Info

Product

Resources

About