Corrosion behaviour of NiCrBSi plasma-sprayed coatings partially melted with laser

Navas, C.; Vijande, R.; Cuetos, J.M.; Fernández, Marianela; Damborenea, J. de

doi:10.1016/j.surfcoat.2005.12.032

Cited by 59 publications

(22 citation statements)

References 17 publications

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“…It reveals the peaks having the phases of γ-Iron (FCC) in all operating temperatures. The peaks reveal the presence of certain intermetallics namely Fe 3 B [20], Cr 1.12 Ni 2.88 and Ni 3 B [14]. Si and Cr peaks were also present in smaller intensities.…”

Section: Phase Identification By Xrdmentioning

confidence: 95%

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Improvement of High Temperature Wear Resistance of AISI 316 ASS through NiCrBSiCFe Plasma Spray Coating

Parthasarathi¹,

Duraiselvam²

2010

JMMCE

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Section: Phase Identification By Xrdmentioning

confidence: 95%

“…The effect of localised laser melting of plasma sprayed NiCrBSi coatings, on the corrosion behaviour was investigated. The microstructure of the coatings was analysed by SEM and energy dispersive spectroscopy (EDS) analysis [14]. The plasma spraying technique was used to get the solid lubrication iron sulfide coating on the 1045 steel.…”

Section: Introductionmentioning

confidence: 99%

Improvement of High Temperature Wear Resistance of AISI 316 ASS through NiCrBSiCFe Plasma Spray Coating

Parthasarathi¹,

Duraiselvam²

2010

JMMCE

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“…In the region of 2Q = 40-50, there were also reflections attributable to other phases such as nickel-silicon boride Ni 6 Si 2 B, chromium or iron carbide (Cr, Fe) 23 C 6 , carbon-iron-silicon solid solution C-Fe-Si and chromium silicide Cr 3 Si. A comparison of related publications [19][20][21] shows that such a phase composition is typical for the NiCrSiBFe coating produced of powders with similar compositions.…”

Section: Resultsmentioning

confidence: 72%

“…Therefore, the chemical compositions listed in Table 2 for the C area, are the results of two phases -the solid solution (A) and the dark dispersive inclusions (C). Taking into account the increased nickel content and based on the XRD data (Figure 1) along with the results reported in references, [19][20][21] it was assumed that in the C area there are phases of Ni borides and/or silicides (such as the one obtained with XRD -Ni 6 Si 2 B) dispersed in the Ni-Cr-Fe solid solution. Other phases identified in the coating with the XRD analysis (such as iron borides or chromium silicides) are most likely also in the form of dispersive precipitates, which is typical for such compounds.…”

Section: Resultsmentioning

confidence: 86%

Increasing the wear resistance of Al-Mg components using thermal-spray coatings

Lukauskaitė¹,

Černašėjus²,

Škamat³

et al. 2017

Mater. Tehnol.

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In the present work, plasma-spray technology was applied as a means to improve the durability of Al-Mg alloy parts. NiCrSiBFe coatings deposited on aluminium-magnesium alloy substrates with different thickness values were studied. Before spraying, the surfaces of aluminium-magnesium alloy were modified upon applying different surface pre-treatment methods. The phase composition, microstructure, microhardness, porosity and adhesion of the deposited coatings were characterized. Ball-on-plate wear tests of the NiCrSiBFe coatings were carried out in dry and lubricated conditions, using a scanning electron microscope to characterize the worn track and the wear mechanism. The correlation of the coating porosity and the adhesion strength with the thickness of a deposited layer was determined. The results revealed that the plasma-sprayed NiCrSiBFe coatings, compared with the uncoated Al-Mg substrate, provide both a stable friction coefficient and an improved wear resistance, which is about two times better under dry sliding and about five times better under lubricated sliding. Keywords: aluminium-magnesium substrate, NiCrSiBFe coatings, plasma spray, sliding wear, adhesion strength V prikazanem delu je bila za izbolj{anje trajnosti delov iz Al-Mg zlitin uporabljena tehnologija pr{enja s plazmo. Predmet preu~evanja so bile NiCrSiBFe prevleke nanesene na podlago iz aluminij-magnezijevih zlitin. Pred nana{anjem so bile povr{ine aluminij-magnezijevih zlitin obdelane z razli~nimi postopki predpriprave povr{in. Dolo~ene so bile fazna sestava, mikrostruktura, mikrotrdota, poroznost in oprijem napr{enih prevlek. Za dolo~itev sledi obrabe in mehanizma je bil na NiCrSiBFe prevlekah izveden preizkus s kroglico, v suhih in naoljenih pogojih, in bil karakteriziran s pomo~jo vrsti~nega elektronskega mikroskopa. Dolo~ena je povezava med poroznostjo in jakostjo oprijema ter debelino nane{enega sloja. Rezultati so pokazali, da plazemsko napr{ene NiCrSiBFe prevleke v primerjavi z Al-Mg zlitino brez prevlek, omogo~ajo stabilen koeficient trenja in izbolj{ujejo odpornost, ki je dvakrat bolj{a pri drsenju po suhi podlagi, in petkrat bolj{a pri drsenju po naoljeni podlagi.

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“…Therefore, they are widely employed to improve and enhance the quality and performance of boilers, heat exchangers, turbines and plungers, etc. (Ref [10][11][12][13]. Ni and Cr could form Ni and Cr oxides, i.e., NiCr 2 O 4 , NiO, and Cr 2 O 3 in oxidative media during the remelting process (Ref 14), and boride and carbide hard phases are formed as well, all of which could improve the wear resistance and corrosion resistance, thus reducing the influence of environment.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Thermally Sprayed NiCrBSi Coating on 16MnR Low-Alloy Steel in KOH Solution

Zeng

Sun

Emori

et al. 2016

J. of Materi Eng and Perform

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NiCrBSi coatings were selected as protective material and air plasma-sprayed on 16MnR low-alloy steel substrates. Corrosion behavior of 16MnR substrates and NiCrBSi coatings in KOH solution were evaluated by polarization resistance (R p ), potentiodynamic polarization curves, electrochemical impedance spectroscopy, and immersion corrosion tests. Electrolytes were solutions with different KOH concentrations. NiCrBSi coating showed superior corrosion resistance in KOH solution compared with the 16MnR. Corrosion current density of 16MnR substrate was 1.7-13.0 times that of NiCrBSi coating in the given concentration of KOH solution. By contrast, R p of NiCrBSi coating was 1.2-8.0 times that of the substrate, indicating that the corrosion rate of NiCrBSi coating was much lower than that of 16MnR substrate. Capacitance and total impedance value of NiCrBSi coating were much higher than those of 16MnR substrate in the same condition. This result indicates that corrosion resistance of NiCrBSi coating was better than that of 16MnR substrate, in accordance with polarization results. NiCrBSi coatings provided good protection for 16MnR substrate in KOH solution. Corrosion products were mainly Ni/Fe/Cr oxides.

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Corrosion behaviour of NiCrBSi plasma-sprayed coatings partially melted with laser

Cited by 59 publications

References 17 publications

Improvement of High Temperature Wear Resistance of AISI 316 ASS through NiCrBSiCFe Plasma Spray Coating

Improvement of High Temperature Wear Resistance of AISI 316 ASS through NiCrBSiCFe Plasma Spray Coating

Increasing the wear resistance of Al-Mg components using thermal-spray coatings

Corrosion Behavior of Thermally Sprayed NiCrBSi Coating on 16MnR Low-Alloy Steel in KOH Solution

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