Corrosion properties and contact resistance of TiN, TiAlN and CrN coatings in simulated proton exchange membrane fuel cell environments

Wang, L.; Northwood, Derek O.; Nie, Xueyuan; Housden, J.; Spain, E.; Leyland, A.; Matthews, A.

doi:10.1016/j.jpowsour.2009.12.127

Cited by 136 publications

(74 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of a protective film on the BPPs with physical-vapor deposition (PVD) is proven to be an effective method and has been extensively studied. [19][20][21][22][23][24] Many researchers focused on the multilayer, while fewer on the composite film.…”

Section: Introductionmentioning

confidence: 99%

ZrMoN films on 304 stainless steel as bipolar plates for PEMFCs using physical-vapor-deposition (PVD) technology

Zheng¹,

Chen²

2017

Mater. Tehnol.

View full text Add to dashboard Cite

ZrMoN films were deposited on a 304 stainless-steel (SS304) substrate with a radio-frequency (RF) reactive magnetron-sputtering system and the properties were changed by adjusting the power of the Mo target. The corrosion behaviors of the ZrMoN films were investigated with potentiodynamic tests and electrochemical impedance spectroscopy (EIS) under the condition of an aerated 0.5M H2SO4 + 1,99 mg/L NaF solution at 70°C. The results revealed that all samples with ZrMoN films have good hydrophobicity. The XRD test showed that the ZrMoN film is the substitutional solid solution of Mo atoms into ZrN films. As an overall evaluation, the power of the Mo target is 30W. A coated sample displays the best corrosion resistance in the cathode of the PEMFC environment when the power of the Mo target is considered, which indicates that with an increase of the power of the Mo target, the solid solubility also increases; but with a continuous increase of the Mo-target power, the solubility increases and a lattice distortion also occurs, leading to an increase in defects. Keywords: ZrMoN, corrosion behavior, bipolar-plate material, physical-vapor-deposition technology (PVD) ZrMoN prevleke so bile nane{ene na substrat 304 nerjavnega jekla (SS 304) z radiofrekven~nim reaktivnim (angl. RF) magnetronskim napr{evalnikom in lastnosti so bile spremenjene s prilagoditvijo mo~i Mo tar~e. Korozijsko obna{anje prevlek ZrMoN smo raziskovali s potenciodinamskimi preizkusi in elektrokemijsko impedan~no spektroskopijo (EIS) v raztopini 0,5 M H2SO4 + 1,99 mg/L NaF pri temperaturi 70°C. Rezultati so pokazali, da imajo vsi vzorci z ZrMoN prevlekami dobro hidrofobnost. XRD-analiza ka`e, da je prevleka ZrMoN nadomestna trdna raztopina atomov Mo v ZrN plasti. Rezultati ka`ejo najbolj{o korozijsko odpornost na katodi v okolju PEMFC pri mo~i Mo tar~e 30 W, kar ka`e, da se s pove~anjem mo~i Mo pove~uje tudi trdna topnost. Vendar pa se s kontinuiranim pove~evanjem mo~i Mo tar~e neprestano pove~uje tudi topnost, zato pride do popa~enja kristalne mre`e, kar povzro~i pove~anje napak. Klju~ne besede: ZrMoN, korozijsko obna{anje, bipolarni material, tehnologija nana{anja iz parne faze (PVD)

show abstract

Section: Introductionmentioning

confidence: 99%

ZrMoN films on 304 stainless steel as bipolar plates for PEMFCs using physical-vapor-deposition (PVD) technology

Zheng¹,

Chen²

2017

Mater. Tehnol.

View full text Add to dashboard Cite

show abstract

“…Forming a protective film on the BPPs by physical vapor deposition (PVD) is proven to be an effective method and has been extensively studied [11e16]. Ternary TieMeeN films are reported to exhibit superior mechanical properties and corrosion resistance to TiN films due to the addition of the third element, such as Cr [15], Al [16], etc. Mo as the addition element has been seldom reported so far.…”

Section: Introductionmentioning

confidence: 99%

Effects of Mo content on microstructure and corrosion resistance of arc ion plated Ti–Mo–N films on 316L stainless steel as bipolar plates for polymer exchange membrane fuel cells

Zhang

Kim

Shao

et al. 2014

Journal of Power Sources

View full text Add to dashboard Cite

“…[14][15][16] Recent studies on the CrN coating on metal bipolar plates for fuel cells have been reported to improve corrosion resistance and interfacial contact resistance. [17][18][19][20][21][22][23] Brady et al developed a preferential thermal nitridation process to form pinhole-free CrN coatings on a Ni-Cr alloy substrate, which showed a lot of promise with excellent corrosion resistance and negligible contact resistance. 24 They pointed out that dense, electrically conductive, corrosion-resistant CrN surfaces can be formed on Ni-Cr alloys with the Cr level of less than 35 wt% by heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Prevention of Chromium Nitride Coating with an Application to Bipolar Plate Materials

et al. 2014

View full text Add to dashboard Cite

The corrosion properties of chromium nitride (CrN) coating on nickel have been evaluated in order to improve the anti-corrosion of metallic bipolar plate materials with applications such as redox flow batteries. The CrN layers are prepared by nitridation of electroplated Cr layers with different thickness. The nitrogen content of CrN coating layers varies from 0.5 to 4.2 wt% depending on nitriding time and coating layer thickness. Electrochemical and chemical corrosion behaviors are investigated by potentiodynamic polarization test in 5% sulfuric acid and by immersion test in 50% sulfuric acid, respectively. Electrochemical analysis of corrosion potential and corrosion current density as well as passivation behavior and chemical corrosion rate prove conclusively that an intact thin CrN layer is more corrosion resistant than thicker layers where cracks are developed. Sheet resistance of CrN coating layers before and after the corrosion test exhibits no significant difference. The improved corrosion resistance and the excellent stability of CrN coating layers suggest an efficient anti-corrosion method for metallic bipolar plate materials.

show abstract

Corrosion properties and contact resistance of TiN, TiAlN and CrN coatings in simulated proton exchange membrane fuel cell environments

Cited by 136 publications

References 46 publications

ZrMoN films on 304 stainless steel as bipolar plates for PEMFCs using physical-vapor-deposition (PVD) technology

ZrMoN films on 304 stainless steel as bipolar plates for PEMFCs using physical-vapor-deposition (PVD) technology

Effects of Mo content on microstructure and corrosion resistance of arc ion plated Ti–Mo–N films on 316L stainless steel as bipolar plates for polymer exchange membrane fuel cells

Corrosion Prevention of Chromium Nitride Coating with an Application to Bipolar Plate Materials

Contact Info

Product

Resources

About