Corrosion of CrN-Coated Steels in Liquid Pb-Bi

Kurata, Yoshiyuki; Futakawa, Masatoshi

doi:10.2320/matertrans.48.519

Cited by 13 publications

(6 citation statements)

References 17 publications

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“…Compared with other nitride coatings, CrN film has particularly excellent hightemperature oxidation resistance and corrosion resistance. 11,12,29,30) Figure 9 shows the Tafel slope results of CrN films with the different gas flow rates by DC magnetron sputtering after the 3.5 wt% NaCl corrosion test. All the specimens possessed a significant passivation phenomenon; in other words, a passivation layer was formed on the material's surface, which can effectively protect the interior material, thereby improving the corrosion resistance.…”

Section: Effect Of Corrosion Resistance Of Crn Films Onmentioning

confidence: 99%

Wear and Corrosion Resistance of CrN Films on Oxynitriding-treated Vanadis 8 Tool Steel <i>via</i> the DC Magnetron Sputtering Process

Chang

Huang³

2022

ISIJ Int.

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This research coated CrN films on oxynitriding-treated Vanadis 8 tool steel using the DC magnetron sputtering process of the PVD technique. The experimental parameters include different gas flow rates (Ar/N 2 was 20/20, 24/16, 28/12, and 32/8, respectively), with a bias of − 50 V, power of 100 W, deposition temperature of 300°C, and deposition time of 180 min, respectively. The experimental results show that Vanadis 8 tool steel can form an effective oxynitriding layer with a depth of about 50 μm after the oxynitriding treatment, and the surface hardness increased to about 1 400 HV0.05. Furthermore, the duplex coating layers exhibited optimal properties when the CrN films treated at an appropriate gas flow rate of Ar/N 2 was 24/16. Meanwhile, according to XRD analysis, the coating layer has a relatively high content of CrN composition, as well as the best wear resistance (the lowest specific wear rate when the loads of 2 N and 4 N were 2.05 × 10 − 5 and 1.56 × 10 − 5 mm 3 •m − 1 •N − 1 ) and good corrosion resistance (in a 3.5 wt% NaCl environment, I corr = 3.05 × 10 − 4 A•cm − 2 , R p = 362.52 Ω•cm 2 ). Overall, this study reveals that the CrN/oxynitriding duplex surface treatment could effectively improve the wear and corrosion properties of Vanadis 8 tool steel.

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Section: Effect Of Corrosion Resistance Of Crn Films Onmentioning

confidence: 99%

Wear and Corrosion Resistance of CrN Films on Oxynitriding-treated Vanadis 8 Tool Steel <i>via</i> the DC Magnetron Sputtering Process

Chang

Huang³

2022

ISIJ Int.

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“…Among this kind of nanocomposite films CrCuN is very interesting. On the one hand, CrN films are known to have high hardness, good corrosion resistance, hightemperature oxidation resistance and wear properties, and have become important technological materials in the fields of cutting and forming tools, bearing and machine parts, dies and moulds [17][18][19]. On the other hand, though many alloy elements have been * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Effect of copper content and substrate bias on structure and mechanical properties of reactive sputtered CrCuN films

Tan

Zhang

et al. 2011

Journal of Alloys and Compounds

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“…4 However, the compatibility of structural materials, many stainless steels, with the liquid metals is a critical problem in the development of ADS. [5][6][7] A series of experiments has shown that most steels are attacked by dissolution corrosion at low oxygen content (especially less than 1 Â 10 À8 wt%), and oxidation corrosion at high oxygen concentration (larger than 1 Â 10 À6 wt%). [8][9][10][11][12] Prior studies show that metallic inhibitors, Zr and Ti, can inhibit the corrosion of steels by reacting with minor constituents of steels, nitrogen and carbon to form inert and adherent surface layers of ZrN, TiN or TiC.…”

Section: Introductionmentioning

confidence: 99%

An energetic evaluation of dissolution corrosion capabilities of liquid metals on iron surface

Song

Zhang

Liu

et al. 2014

Phys. Chem. Chem. Phys.

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Using first principles calculations, dissolution corrosion of liquid metals on iron surfaces has been investigated by calculating adsorption energies of metal atoms in the liquid phase on the surface and escape energies of surface Fe atoms. The adsorption energies, characterizing the stability of the adsorbed atoms on the investigated surfaces, show that Bi is more stable than Pb and Au. The escape energies, representing the energy required for an Fe atom to escape from the surface, show that adsorbed Pb makes surface Fe atoms escape more easily than Bi and Au. The combination of adsorption energy and escape energy indicates that the corrosion capabilities of liquid metals decrease in the order Bi > Pb > Au. This is further proved by the investigation of surface properties, such as inter-layer distance, magnetic momentum and charge density difference. The results are consistent with experimental results that Fe can be corroded more severely in Bi than in Pb. In the case of liquid alloys, chemical proportions of compositions are incorporated to evaluate the corrosion capabilities of Pb-Bi eutectic (LBE) and Pb-Au eutectic (LGE). It is found that LBE has more severe corrosion capability than LGE. The energetic calculation is further developed in evaluating the effect of alloying elements in popular steels on the dissolution corrosion. The results indicate that Si, V, Nb and Mo may mitigate the dissolution corrosion of martensite steels in liquid Pb, Bi and Au.

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Corrosion of CrN-Coated Steels in Liquid Pb-Bi

Cited by 13 publications

References 17 publications

Wear and Corrosion Resistance of CrN Films on Oxynitriding-treated Vanadis 8 Tool Steel <i>via</i> the DC Magnetron Sputtering Process

Wear and Corrosion Resistance of CrN Films on Oxynitriding-treated Vanadis 8 Tool Steel <i>via</i> the DC Magnetron Sputtering Process

Effect of copper content and substrate bias on structure and mechanical properties of reactive sputtered CrCuN films

An energetic evaluation of dissolution corrosion capabilities of liquid metals on iron surface

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