Study of the oxidation behavior of CrN coating on Zr alloy in air

Meng, Chuiyi; Yang, Liting; Wu, Yihang; Tan, Jie; Dang, Weian; He, Xiujie; Ma, Xianfeng

doi:10.1016/j.jnucmat.2019.01.006

Cited by 108 publications

(48 citation statements)

References 35 publications

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“…Furthermore, the weight gain and K p values of the #C and #E films are almost the same, which indicates the Cr-Si-N thin films containing more than 6.1 at.% Si have similar oxidation kinetics at 1000 • C for 6 h. The parabolic oxidation behavior of CrN film at 700-900 • C and at 760-1160 • C were reported by Lin et al [4] and Meng and coworkers [3], respectively. A K p value around 2.73 × 10 −2 mg 2 /cm 4 /h was calculated for the CrN film oxidized at 960 • C for 1 h [3], which is around 13% less than that of the #A film at 1000 • C. Kim and coworkers [9] also reported the oxidation kinetics of CrN, Cr 0.78 Si 0.22 N, and Cr 0.67 Si 0.33 N films at 800-1000 • C in air. The parabolic rate constant of Cr 0.78 Si 0.22 N film at 1000 • C is calculated around 4.46 × 10 -2 mg 2 /cm 4 /h, whereas a much higher value of 3.16 × 10 -1 mg 2 /cm 4 /h is calculated for the CrN film [9].…”

Section: Oxidation Kinetics Of Thin Films At 1000 • Csupporting

confidence: 65%

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High Temperature Oxidation Behaviors of CrNx and Cr-Si-N Thin Films at 1000 °C

2019

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The high temperature oxidation performance of nitride thin films has become an important issue when they are used as protective coatings on dry cutting tools or on die casting molds. In this study, the high temperature oxidation behaviors of CrNx and Cr-Si-N thin films were investigated at 1000 °C for 6 h in ambient air. The CrNx and Cr-Si-N thin films were prepared by a bipolar asymmetric pulsed direct-current (DC) magnetron sputtering system. Cr-Si-N films with silicon content ranging from 3.9 to 12.2 at.% were deposited by adjusting the Si target power. A thermogravimeter was adopted to study the oxidation kinetics of thin films. The weight gains were measured to calculate the parabolic rate constants of thin films. X-ray diffraction, X-ray mapping, and Auger electron spectroscopy were employed to study the microstructure and elemental redistributions of oxidized thin films. The as-deposited CrNx and Cr-Si-N thin films consisted of CrN and Cr2N mixed phases. The faceted Cr2O3 surface oxides, porous inner oxide layer, and oxygen-containing CrSi2 phases were found for the CrN film after oxidation test. On the other hand, the Cr-Si-N film containing 12.2 at.% Si showed a dense surface oxide layer and a thick and compact nitride layer, which indicates its best oxidation resistance. The high temperature oxidation resistance of Cr-Si-N thin films was improved by increasing Si content, due to the amorphous matrix contained nanocomposite microstructure and the formation of amorphous silicon oxide to retard the diffusion paths of oxygen, chromium, silicon, and nitrogen. The lowest parabolic rate constant of 1.48 × 10–2 mg2/cm4/h was obtained for the 12.2 at.% Si contained Cr-Si-N thin films, which provided the best oxidation resistance at 1000 °C for 6 h in this work. It should be noted that the residual tensile stress of thin film had a detrimental effect on the adhesion property during the oxidation test.

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Section: Oxidation Kinetics Of Thin Films At 1000 • Csupporting

confidence: 65%

“…Chromium nitride (CrN) thin film has been widely studied due to its adequate mechanical properties, and good corrosion and oxidation resistance [1][2][3][4]. Depositions of CrN films onto die casting molds and cores in real industrial applications for extending their service life has been reported [5].…”

Section: Introductionmentioning

confidence: 99%

High Temperature Oxidation Behaviors of CrNx and Cr-Si-N Thin Films at 1000 °C

2019

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“…The compound coatings (e.g., CrN, ZrSi2, etc.) can have better oxidation resistance than metallic Cr and act as a diffusion barrier [11][12][13][14][15]. However, high hardness and strong difference in thermal expansion coefficients of such materials in comparison with Zr alloys cause coating cracking and its spallation at high-temperature oxidation or under mechanical deformations [15].…”

Section: Introductionmentioning

confidence: 99%

“…Several compound coatings (Ti2AlC, Cr2AlC, CrAlN, CrAlSiN, TiN, CrN, etc.) were already studied in normal operation and accident conditions [14,[18][19][20][21][22]. The last results show that the chromium nitride coating has a good corrosion and oxidation resistance in both conditions.…”

Section: Introductionmentioning

confidence: 99%

Protection of Zr Alloy under High-Temperature Air Oxidation: A Multilayer Coating Approach

et al. 2021

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Metallic Cr and multilayer CrN/Cr coatings with a thickness of 2.5 µm were deposited onto E110 alloy by magnetron sputtering. Oxidation tests in air were performed at 1100 °C for 10–40 min. The gravimetric measurements showed better protective properties of multilayer CrN/Cr coatings in comparison with metallic Cr coating. Multilayer coating prevented fast Cr–Zr inter-diffusion by the formation of a ZrN layer beneath the coating. The appearance of ZrN is caused by interaction with nitrogen formed from the decomposition of CrN to Cr2N phases. Optical microscopy revealed a residual Cr layer for the multilayer CrN (0.25 µm)/Cr (0.25 µm) coating for all the oxidation periods. Additional in situ X-ray diffraction (XRD) studies of coated alloy during linear heating up to 1400 °C showed that the formation of the Cr2Zr phase in the case of multilayer coatings occurred at a higher (~150 °C) temperature compared to metallic Cr. Multilayer coatings can decrease the nitrogen effect for Zr alloy oxidation. Uniform and thinner oxide layers of Zr alloy were observed when the multilayer coatings were applied. The highest oxidation resistance belonged to the CrN/Cr coating with a multilayer step of 0.25 µm.

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“…Chromium nitride thin films have attracted widespread industrial applications [1] and academic studies because of their excellent mechanical properties [2,3], wear resistance [4,5], corrosion resistance [6], and oxidation resistance [7][8][9][10]. To meet the increasingly advanced industrial demands, ternary composite films have attracted researchers' attentions.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Oxidation Behavior of Cr–Si–N Coatings

2019

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Cr–Si–N coatings were prepared through reactive direct current magneton sputtering using a high N2/Ar flow ratio of 1. The addition of Si to improve the mechanical properties and oxidation resistance of Cr–N coatings was examined. The results indicated that the Cr–Si–N coatings with an Si content of <12 at % and an N content of >50 at % exhibited a cubic CrN phase with a columnar structure, whereas the coatings with 14 at % Si comprised of a nanocomposite structure, and the coatings with 16–18 at % Si were near-amorphous. The nanocomposite Cr32Si14N54 coating possessed hardness and Young’s modulus values of 17 and 209 GPa, respectively, accompanied with a hardness to effective Young’s modulus (H/E*) value of 0.077 and an elastic recovery (We) level of 55%—all the properties were highest within the as-deposited coating. The addition of Si was also beneficial to reduce the surface roughness and improve the oxidation resistance.

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Study of the oxidation behavior of CrN coating on Zr alloy in air

Cited by 108 publications

References 35 publications

High Temperature Oxidation Behaviors of CrNx and Cr-Si-N Thin Films at 1000 °C

High Temperature Oxidation Behaviors of CrNx and Cr-Si-N Thin Films at 1000 °C

Protection of Zr Alloy under High-Temperature Air Oxidation: A Multilayer Coating Approach

Mechanical Properties and Oxidation Behavior of Cr–Si–N Coatings

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