Corrosion behavior of mesoporous transition metal nitrides

Allen, Amy J.; Nguyen, Minh T.; Ralston, Walter T.; MacLeod, Michelle J.; DiSalvo, Francis J.

doi:10.1016/j.jssc.2013.06.026

Cited by 33 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The preparation of mesoporous metal nitrides often requires complicated synthetic steps with special templates or equipment . The simple synthetic procedure reported here offers an alternative and has been quite successful in making a number of mesoporous metal nitrides such as TiN, VN, NbN, WN and CrN . However, the surface areas of as‐prepared samples prepared using this method are normally very small, probably because Zn is also a good sintering aid that strongly promotes particle growth …”

Section: Resultsmentioning

confidence: 99%

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta₃N₅

et al. 2016

View full text Add to dashboard Cite

Tantalum nitride (Ta3 N5 ) highlights an intriguing paradigm for converting solar energy into chemical fuels. However, its photocatalytic properties are strongly governed by various intrinsic/extrinsic defects. In this work, we successfully prepared a series of Mg-doped mesoporous Ta3 N5 using a simple method. The photocatalytic and photoelectrochemical properties were investigated from the viewpoint of how defects such as accumulation of oxygen and nitrogen vacancies contribute to the catalytic activity. Our findings suggest that Mg doping is accompanied by an accumulation of oxygen species and a simultaneous elimination of nitrogen vacancies in Ta3 N5 . These oxygen species in Ta3 N5 induce delocalized shallow donor states near the conduction band minimum and are responsible for high electron mobility. The superior photocatalytic activity of Mg-doped Ta3 N5 can then be understood by the improved electron-hole separation as well as the lack of nitrogen vacancies, which often serve as charge-recombination centers.

show abstract

Section: Resultsmentioning

confidence: 99%

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta₃N₅

et al. 2016

View full text Add to dashboard Cite

show abstract

Section: Potentiodynamic Polarization Test Of Statically Corroded Uncmentioning

confidence: 90%

“…Corrosion products such as an amorphous aluminium monohydroxide (AlOOH(amorph)) and a crystalline aluminium hydroxide (Al(OH)3(crystal)) form an additional passivation layer. Increased Pi up to 99.8% confirms the inertness of transition metal (e.g., Cr) nitrides [24]. A significant passivation of the AlCrN PVD coated sample was found after immersion for 24 h. E corr calc significantly shifts toward a positive value (−0.153 V vs. SCE) and i corr was found to be ≈30 times lower (0.05 µA•cm −2 ) as compared to the coating after 10 min immersion.…”

Section: Potentiodynamic Polarization Test Of Statically Corroded Uncmentioning

confidence: 93%

Raman Spectroscopy for Reliability Assessment of Multilayered AlCrN Coating in Tribo-Corrosive Conditions

et al. 2018

View full text Add to dashboard Cite

In this study, a multilayered AlCrN coating has been employed as a protective layer for steel used in tribo-corrosive conditions. The coating was deposited by a lateral rotating cathode arc PVD technology on a AISI 316L stainless steel substrate. A ratio of Al/(Al + Cr) was varied from 0.5 up to 0.6 in the AlCrN layer located above Cr adhesion and gradient CrN interlayers. A Raman spectroscopy and potentiodynamic polarization scan were used to determine the resistance in tribo-corrosive (3.5 wt % NaCl) conditions. Correlation between sliding contact surface chemistry and measured tribological properties of material was supported with static corrosion experiments. The corrosion mechanisms responsible for surface degradation are reported.

show abstract

“…Although transition metal nitrides coatings are known to possess high chemical inertness, they may be dissolved and transformed into oxynitrides or oxides in passive films when redox reactions take place on their surface during electrochemical corrosion under suitable aqueous solution conditions [19] . For passive materials, the stability of their passive films in corrosive media is closely related to their semiconducting behavior.…”

Section: Introductionmentioning

confidence: 99%

The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating

Peng

et al. 2021

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

Corrosion behavior of mesoporous transition metal nitrides

Cited by 33 publications

References 22 publications

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta₃N₅

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta₃N₅

Raman Spectroscopy for Reliability Assessment of Multilayered AlCrN Coating in Tribo-Corrosive Conditions

The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating

Contact Info

Product

Resources

About

Corrosion behavior of mesoporous transition metal nitrides

Cited by 33 publications

References 22 publications

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta3N5

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta3N5

Raman Spectroscopy for Reliability Assessment of Multilayered AlCrN Coating in Tribo-Corrosive Conditions

The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating

Contact Info

Product

Resources

About

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta₃N₅

Role of Oxygen Defects on the Photocatalytic Properties of Mg‐Doped Mesoporous Ta₃N₅