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Open AccessArticle

Corrosion Damage Mechanism of TiN/ZrN Nanoscale Multilayer Anti-Erosion Coating

1
Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
2
School of Materials Science and Engineering, Chang’an University, Xi’an 710064, China
3
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Coatings 2018, 8(11), 400; https://doi.org/10.3390/coatings8110400
Received: 16 September 2018 / Revised: 17 October 2018 / Accepted: 10 November 2018 / Published: 13 November 2018
(This article belongs to the Special Issue From Metallic Coatings to Additive Manufacturing)
TiN/ZrN multilayers can effectively improve the erosion resistance of metals, particularly titanium alloys employed in aero engines. To explore the corrosion damage mechanism of TiN/ZrN nanoscale multilayers (nanolaminate), a novel [TiN/ZrN]100 nanolaminate coating was deposited on Ti-6Al-4V alloys by multi-arc ion plating method. Salt spray corrosion tests and hot corrosion experiment were carried out to evaluate the corrosion resistance of the coating. The corrosion and damage mechanisms were explored with the help of detailed microstructure, phase composition and element distribution characterizations. The salt spray corrosion tests showed that the [TiN/ZrN]100 nanolaminate coating possessed good corrosion resistance, which protected substrate against the corrosion. The low temperature hot corrosion tests showed that the oxidation occurred on the surface of the coating, which improved the oxidation resistance of the sample. However, the oxidized droplets squeezed the coating, and destroyed the oxidized layers. As a result, the coating was peeled off from the substrate. The research highlights the corrosion resistance of the novel TiN/ZrN nanolaminate coating and offers a support for their application in engine compressor blade. View Full-Text
Keywords: aero-engine; compressor; TiN/ZrN coating; corrosion; damage mechanism aero-engine; compressor; TiN/ZrN coating; corrosion; damage mechanism
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MDPI and ACS Style

Geng, M.; He, G.; Sun, Z.; Chen, J.; Yang, Z.; Li, Y. Corrosion Damage Mechanism of TiN/ZrN Nanoscale Multilayer Anti-Erosion Coating. Coatings 2018, 8, 400. https://doi.org/10.3390/coatings8110400

AMA Style

Geng M, He G, Sun Z, Chen J, Yang Z, Li Y. Corrosion Damage Mechanism of TiN/ZrN Nanoscale Multilayer Anti-Erosion Coating. Coatings. 2018; 8(11):400. https://doi.org/10.3390/coatings8110400

Chicago/Turabian Style

Geng, Mingrui; He, Guangyu; Sun, Zhiping; Chen, Jiao; Yang, Zhufang; Li, Yuqin. 2018. "Corrosion Damage Mechanism of TiN/ZrN Nanoscale Multilayer Anti-Erosion Coating" Coatings 8, no. 11: 400. https://doi.org/10.3390/coatings8110400

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